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Ivar Zekker

https://www.etis.ee/CV/Ivar_Zekker/eng
15.11.1983
737 5181
58194858
ivar.zekker@ut.ee
http://
H-9772-2018
We are working on topics: heavy metals removal and valourizing,sludge treatment,fungal processes, wastewater treatment (biological nitrogen and phosphorus removal and valorizing), anaerobic ammonium oxidation process and denitrifying phosphorus removal bacteria for ammonium, phosphorus removal from municipal and sidestream wastewater, microbial fuel cell technology (anammox biocathode), peat usage as building material and humic substances valorizing in peat.
Assessment of waste treatment technologies efficiency (ROS, intermediate compounds for bacteria) and start up in biofilm and suspended systems.
Piloting and full scale wastewater systems dimensioning and start-up
Compost and residual sludge stabilisation, heavy metals removal from sludge and compost using fungi, heavy metals valorizing using fungi, Plant volatiles from different plants at stress conditions
Apparature: Fungal systems,Ion chromatograph, spectrophotometers, wastewater treatment reactors and automatics, controllers, centrifuges, ion selective measuring device, TOC analyzer, central Ar and N2 supply, glow box, nanoparticles analyser, Leica light microscope. Waste analysing tools and methods, pilot reactors (3 m3).Cooperation and consultancy services with Aqua Consult Baltic international company in nutrient removal technology development in pilot and full-scale.

Career

Institutions and positions
01.01.2020–31.12.2023   
University of Tartu, Faculty of Science and Technology, Institute of Chemistry, Research fellow (1,00)
01.01.2020–31.01.2023   
University of Tartu, Faculty of Science and Technology, Institute of Chemistry, Research fellow (1,00)
01.04.2017–...   
University of Tartu, Faculty of Science and Technology, Institute of Chemistry, Research Fellow in Colloidal and Environmental Chemistry (1,00)
01.01.2016–31.03.2017   
University of Tartu, Faculty of Science and Technology, Institute of Chemistry, Research Fellow in Colloidal and Environmental Chemistry (1,00)
01.06.2015–31.12.2015   
University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University, Research Fellow in Colloidal and Environmental Chemistry (0,90)
01.04.2014–31.05.2015   
University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University, Research Fellow in Colloidal and Environmental Chemistry (1,00)
01.07.2012–31.03.2014   
University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University, Chemist (1,00)
01.01.2012–30.06.2012   
University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University, Chemist (0,75)
01.03.2011–31.12.2011   
University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University, Chemist (1,00)
01.04.2009–28.02.2011   
University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University, Chemist (0,75)
01.05.2008–31.03.2009   
University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University, Chemist (0,50)
 
 
Education
2017–31.12.2018   
Post.doc application accepted by KTH, Sweden
01.09.2009–31.08.2013   
University of Tartu PhD, Environmental Technology
2007–2009   
University of Tartu MSc, Environmental Technology
2003–31.08.2013   
University of Tartu 2009-2013-doctor's, University of Tartu 2003-2009- MSc, Gymnasium of Vastseliina 1991-2003
 
 
R&D related managerial and administrative work
2014−2014   
Jury member of PhD defence of Jekaterina Jefimova
2014−2020   
Jury member in MSc defences in TalTech in Industrial Ecology
2012−2020   
Jury member of BSc and MSc defence of Environmental Technology in University Tartu
2011−2012   
6 Months PhD researcher exchange period in Ghent University, Labmet, Belgium
2008−2020   
chemist, lector in wastewater related lectures and practical exercises
 
 
Creative work
2012-2020 Development of methodologies for fungal metal removal and recovery, full-scale and lab scale wastewater reactor operations for nutrient removal.
Development of methodology for hydrazine and hydroxylamine determination
Development of online oxidation reduction control for anammox nutrient removal reactors
Development of methodology for phosphorus removal in sequence batch reactor and batch mode.
Research of specific nitrite oxidation rate on high surfaced biofilms carriers with FA and temperature variations.
Zekker, I., Tenno, T., Tenno, T., Lemmiksoo, V., Rikmann, E., Menert, A.
Conference thesis: European Chemistry Congress- 29 Augus.
 
 
Additional information
Editor in Journal: Water

Reviewed in scientific peer reviewed journals(see publons) :
Environmental Technology, International Journal of Environmental Science and Technology,Bioresource Technology,Chemosphere,Journal of Chemical Technology & Biotechnology, Desalination and Water Treatment,Water,Water Research,Applied Microbiology and Biotechnology,Journal of Cleaner Production,Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, Bioprocess and Biosystems Engineering,Journal of Environmental Management,Reviews in Environmental Science and Biotechnology,Science of the Total Environment,ACS Omega,Chemical Engineering Journal, Chemical Papers,Energies,Environmental Science: Water Research & Technology,International Journal of Biotechnology and Molecular Biology Research, Journal of Environmental Chemical Engineering,Materials,Processes, RSC Advances,The Open Civil Engineering Journal,Water Environment Research, Water and Environment Journal.

Qualifications

Academic degrees
Ivar Zekker, Doctor's Degree, 2013, (sup) Taavo Tenno, Enrichment of anaerobic ammonium oxidizing bacteria for nitrogen removal from digester effluent and anammox process acceleration by intermediate compounds, University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University.
Ivar Zekker, Master's Degree, 2009, (sup) Vallo Lemmiksoo; Taavo Tenno, Lämmastikurikka Tallinna Reoveepuhasti settevee puhastamise uurimine kasutades anaeroobse ammooniumlämmastiku oksüdatsiooni meetodit (Research of Tallinn Wastewater Plant reject water treatment by anaerobic ammonia oxidation method), University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University, Chair of Colloid and Environmental Chemistry.
Ivar Zekker, Phd student, (sup) Astrid Kännaste; Eve Runno-Paurson; Ülo Niinemets, Taimede stressireaktsiooni uurimine lähtudes Põhjamaade kliimamuutusest (Stress response of plants on the climate change of the Nordic region), Estonian University of Life Sciences
 
 
Honours & awards
2011, Ivar Zekker, University of Tartu Ecology- and Environmental Sciences doctoral school PhD students scholarship Iceland expedition
2011, Ivar Zekker, SA Archimedes foundation scholarship of partial studies PhD at Ghent University
2010, Ivar Zekker, Scholarship of Kristjan Jaak
 
 
Fields of research
ETIS CLASSIFICATION: 4. Natural Sciences and Engineering; 4.16. Biotechnology relating to Natural Sciences and Engineering; CERCS CLASSIFICATION: T490 Biotechnology ; SPECIFICATION: Waste treatment, recycling, recovery, circular economy
ETIS CLASSIFICATION: 1. Biosciences and Environment; 1.12. Biotechnology, Molecular Biology, Cell Biology, Biophysics and Economic and Technological Research relating to Bio- and Environmental Sciences; CERCS CLASSIFICATION: P330 Bioenergetics
ETIS CLASSIFICATION: 1. Biosciences and Environment; 1.12. Biotechnology, Molecular Biology, Cell Biology, Biophysics and Economic and Technological Research relating to Bio- and Environmental Sciences; CERCS CLASSIFICATION: P305 Environmental chemistry ; SPECIFICATION: Treatment of Nitrogen removal by ANAMMOX, Treatment of Nitrogen-rich waste streams by ANAMMOX
ETIS CLASSIFICATION: 1. Biosciences and Environment; 1.8. Research relating to the State of the Environment and to Environmental Protection; CERCS CLASSIFICATION: T270 Environmental technology, pollution control
 
 
Additional information
Supervisions:
16.06.2011 Martin Tomingas 17.06.2013 mag
16.06.2011 Kristel Kroon 17.06.2013 mag
18.06.2012 Priit Vabamäe mag
18.06.2012 Kaarel Kahu bak
17.06.2014 Erik Salo bak
17.06.2013 Raimond Valler
04.02.2015 -... Jana Mihkelson mag
01.09.2015 -... Ly Reimus mag
31.08.2015 - .. Anni Mandel dok
2019 Triin Väisanen,mag
2020 Kelvin Ohimai, Antonio Manuel MSc
2021 Esther Michael, BSc
2021 Opakunle Abimbola, BSc

Projects in progress

Completed projects

Dissertations under supervision

Supervised dissertations

Publications

Category
Year
Publication
 
1.1.
2021
Zekker, I., Raudkivi, M., Artemchuk, O., Rikmann, E., Priks, H., Jaagura, M., Tenno, T. (2021). Mainstream-sidestream wastewater switching promotes anammox nitrogen removal rate in organic-rich, low-temperature streams. Environmental Technology. DOI: 10.1080/09593330.2020.1721566.
1.1.
2021
Zekker, Ivar; Artemchuk, Oleg; Rikmann, Ergo; Ohimai, Kelvin; Browmick, Gourav Dhar; Ghangrekar, Makarand; Burlakovs, Juris; Tenno, Taavo (2021). Title: Start-up of anammox SBR from non-specific inoculum and processacceleration methods by hydrazine. Water, XX (XX, XX), XX−XX.
1.1.
2021
Rikmann, Ergo; Zekker, Ivar; Teppand, Tõnis; Pallav, Vello; Shanskiy, Merrit; Mäeorg, Uno; Tenno, Toomas; Burlakovs, Juris; Liiv, Jüri (2021). Relationship between Phase Composition and Mechanical Properties of Peat Soils Stabilized Using Oil Shale Ash and Pozzolanic Additive. Water, 13 (7), 942. DOI: 10.3390/w13070942.
1.1.
2021
Umar, A; Sufaid, M.; Khan; Sultan, A.; Zekker, I; Burlakovs, J; Rubin, S; Bhowmick, G; Kallistova,A; Pimenov, N; Zahoor, M. (2021). Synthesis and Characterization of Pd-Ni Bimetallic Nanoparticles as Efficient Adsorbent for the Removal of Acid Orange 8 Present in Wastewater. Water, 13 (8, X), 1095−1095. DOI: 10.3390/w13081095 .
1.1.
2021
Alam, S; Khan, M.S., Umar, A; Khattak R; Rahman, N; Zekker, I; Burlakovs, J; Rubin, S; Ghangrekar, M; Bhowmick, G; Kallistova, A; Pimenov, N; Khan, A; Zahoor, M. (2021). Preparation of Pd-Ni nanoparticles supported on activated carbon for efficient removal of basic blue 3 from water. Water, X (X, X), X−X [forthcoming].
3.1.
2021
Zekker, I. (2021). Deammonification Biofilm Is Achieved At 9-15° C Low Temperature System. X: 10th International Conference on Biofilm Reactors, Dublin, Ireland, 9-12 May, 2017. IWA , XX−XX [forthcoming].
1.1.
2020
Liiv, J.; Zekker, Ivar; Zekker; Tämm, K., Rikmann, E. (2020). Greenhouse gases emissions and climate change - beyond mainstream. MOJ Bioorganic & Organic Chemistry, 4 (1), 11−16. DOI: 10.15406/mojboc.2020.04.00104.
1.1.
2020
Zekker, Ivar; Bhowmick, Gourav Dhar; Priks, Hans; Nath, Dibyojyoty; Rikmann, Ergo; Jaagura, Madis; Tenno, Taavo; Tämm, Kaido; Ghangrekar, Makarand Madhao (2020). ANAMMOX-denitrification biomass in microbial fuel cell to enhance the electricity generation and nitrogen removal efficiency. Biodegradation, 31, 249−264. DOI: 10.1007/s10532-020-09907-w.
1.1.
2020
Uiga, K; Rikmann, E; Zekker, I; Mashirin, A; Tenno T (2020). Modelling and experimental measurement of the closed equilibrium system of H2O–SrS. Proceedings of the Estonian Academy of Sciences, 69 (4), 287−297. DOI: 10.3176/proc.2020.4.02.
1.1.
2020
Uiga, K.; Rikmann, E.; Zekker, I.; Tenno, T. (2020). Detection and dissolution of sparingly soluble srs and cas particles in aqueous media depending on their size distribution. Proceedings of the Estonian Academy of Sciences, 69 (4), 323−330. DOI: 10.3176/proc.2020.4.07.
1.1.
2019
Zekker, Ivar; Kiviruut, Aimar; Rikmann, Ergo; Mandel, Anni; Jaagura, Madis; Tenno, Toomas; Artemchuk, Oleg; Rubin, Sergio dC; Tenno, Taavo (2019). Enhanced Efficiency of Nitritating-Anammox Sequencing Batch Reactor Achieved at Low Decrease Rates of Oxidation-Reduction Potential. Environmental Engineering Science, 36 (3), 350−360. DOI: 10.1089/ees.2018.0225.
1.1.
2019
Mandel, A.; Zekker, I; Jaagura, M.; Tenno, T. (2019). Enhancement of anoxic phosphorus uptake of denitrifying phosphorus removal process by biomass adaption. International Journal of Environmental Science and Technology, 16 (10), 5965−5978. DOI: 10.1007/s13762-018-02194-2.
1.1.
2018
Rikmann, E.; Zekker, I.; Tenno, T.; Saluste, A.; Tenno, T. (2018). Inoculum-free start-up of biofilm- and sludge-based deammonification systems in pilot scale. International Journal of Environmental Science and Technology, 15 (1), 133−148. DOI: 10.1007/s13762-017-1374-3.
1.1.
2018
Tenno, T.Uiga, K., Mashirin, A., Zekker, I., Rikmann, E.,Tenno, T. (2018). A novel proton transfer model of closed equilibrium systems of H2O–CO2–CaCO3–NHX. Proceedings of Estonian Academy of Sciences, 67 (3), 260−270. DOI: 10.3176/proc.2018.3.04.
1.1.
2018
Tenno, Toomas; Rikmann, Ergo; Zekker, Ivar; Tenno, Taavo (2018). Modelling the solubility of sparingly soluble compounds depending on their particles size. Proceedings of the Estonian Academy of Sciences, 67 (3, 2), 300−302. DOI: 10.3176/proc.2018.3.10.
1.1.
2017
Raudkivi, Markus; Zekker, Ivar; Rikmann, Ergo; Vabamae, Priit; Kroon, Kristel; Tenno, Taavo (2017). Nitrite inhibition and limitation - the effect of nitrite spiking on anammox biofilm, suspended and granular biomass. Water Science & Technology, 75 (2), 313−321. DOI: 10.2166/wst.2016.456.
1.1.
2017
Klein, Kati; Kivi, Arthur; Dulova, Niina; Zekker, Ivar; Mölder, Erik; Tenno, Toomas; Trapido, Marina; Tenno, Taavo (2017). A pilot study of three-stage biological-chemical treatment of landfill leachate applying continuous ferric sludge reuse in Fenton-like process. Clean Technologies and Environmental Policy, 19 (2), 541−551. DOI: 10.1007/s10098-016-1245-5.
1.1.
2017
Tenno, Toomas; Uiga, Kalev; Mashirin, Alexsey; Zekker, Ivar; Rikmann, Ergo (2017).

Modelling Closed Equilibrium Systems of H2O–dissolved CO2–solid CaCO3

. The Journal of Physical Chemistry A, 121 (16), 3094−3100. DOI: 10.1021/acs.jpca.7b00237.
1.1.
2017
Zekker, I., Rikmann, E., Kroon, K., Mandel, A., Mihkelson, J., Tenno, T., Tenno, T. (2017). Ameliorating nitrite inhibition in a low-temperature nitritation–anammox MBBR using bacterial intermediate nitric oxide. International Journal of Environmental Science and Technology, 14 (11), 2343−2356. DOI: 10.1007/s13762-017-1321-3.
1.1.
2017
Klein, Kati; Kattel, Eneliis; Goi, Anna; Kivi, Arthur; Dulova, Niina; Saluste, Alar; Zekker, Ivar; Trapido, Marina; Tenno, Taavo (2017). Combined treatment of pyrogenic wastewater from oil shale retorting. Oil Shale, 34 (1), 82−96. DOI: 10.3176/oil.2017.1.06.
1.1.
2017
Rubin, S., Irma Marín, I., Manuel J Gómez, Zekker, I., Ricardo Amils (2017). Prokaryotic diversity and community composition in the Salar de Uyuni, a large scale, chaotropic salt flat. Environmental Microbiology, 19 (9), 3745−3754. DOI: 10.1111/1462-2920.13876.
1.1.
2017
Raudkivi, Markus; Zekker, Ivar; Rikmann, Ergo; Vabamae, Priit; Kroon, Kristel; Tenno, Taavo (2017). Nitrite inhibition and limitation - the effect of nitrite spiking on anammox biofilm, suspended and granular biomass. Water Science & Technology, 75 (2), 313−321. DOI: 10.2166/wst.2016.456.
3.4.
2017
Zekker, I. (2017). Anammox process nitrite inhibition and nitrite-adaption. X: Nordiva conference, Aarhus, Denmark, 10-12 Oct, 2017. nordiva, X−X.
1.1.
2016
Daija, Laura; Selberg, Aare; Rikmann, Ergo; Zekker, Ivar; Tenno, Taavo; Tenno, Toomas (2016). The influence of lower temperature, influent fluctuations and long retention time on the performance of an upflow mode laboratory-scale septic tank. Desalination and Water Treatment, 57 (40), 18679−18687.10.1080/19443994.2015.1094421.
1.1.
2016
Toomas Tenno, Ergo Rikmann, Ivar Zekker, Taavo Tenno, Laura Daija, Alexey Mashirin (2016). Modelling equilibrium distribution of carbonaceous ions and molecules in a heterogeneous system of CaCO3–water–gas. Proceedings of the Estonian Academy of Sciences. Chemistry, 65 (1), 68−77. DOI: 10.3176/proc.2016.1.07.
1.1.
2016
Zekker, Ivar; Rikmann, Ergo; Mandel, Anni; Kroon, Kristel; Seiman, Andrus; Mihkelson, Jana; Tenno, Taavo; Tenno, Toomas (2016). Step-wise temperature decreasing cultivates a biofilm with high nitrogen removal rates at 9 degrees C in short-term anammox biofilm tests. Environmental Technology, 37 (15), 1933−1946.10.1080/09593330.2015.1135995.
1.2.
2016
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Seiman, A.; Fritze, H.; Vabamäe, P.; Tenno, T.; Tenno, T. (2016). Increased Nitrogen Removal in Cold Deammonification Biofilm Reactor (9-15°c) By Smooth Temperature Decreasing. Environmental and Ecological Engineering, 2, 1933−1946. DOI: 10.1080%2F09593330.2015.1135995.
1.1.
2015
Zekker, I.; Rikmann, E.; Tenno, T.; Loorits, L.; Kroon, K.; Vabamäe, P.; Mandel, A.; Raudkivi, M.; Daija, L.; RUBIN, S. S.C. DC.; Tenno, T. (2015). Nitric oxide for anammox recovery in nitrite-inhibited deammonification system. Environmental Technology, 36 (19), 2477−2487. DOI: 10.1080/09593330.2015.1034791.
1.1.
2015
Rikmann, E.; Zekker, I.; Tomingas, M.; Tenno, T.; Loorits, L.; Vabamäe, P.; Mandel, A.; Raudkivi, M.; Daija, L.; Kroon, K.; Tenno, T. (2015). Sulfate-reducing Anammox for Sulfate and Nitrogen Containing Wastewaters. Desalination and Water Treatment, 57 (7), 3132−3141. DOI: 10.1080/19443994.2014.984339.
1.1.
2015
Zekker, Ivar; Rikmann, Ergo; Tenno, Toomas; Kroon, Kristel; Seiman, Andrus; Loorits, Liis; Fritze, Hannu; Tuomivirta, Tero; Vabamäe, Priit; Raudkivi, Markus; Mandel, Anni; Tenno, Taavo (2015). Start-up of low-temperature anammox in UASB from mesophilic yeast factory anaerobic tank inoculum. Environmental Technology, 36 (2), 214−225. DOI: 10.1080/09593330.2014.941946.
1.2.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Seiman, A.; Tenno, T.; Tenno, T. (2015). SMOOTH TEMPERATURE DECREASING FOR NITROGEN REMOVAL IN COLD (9-15° C) ANAMMOX BIOFILM REACTOR TESTS. European Scientific Journal ESJ, 508−525.
3.2.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Tenno, T.; Tenno, T. (2015). High nitrite concentration inhibits nitrite-adapted granular anammox biomass less compared to biofilm. ICSD, Belgrad, 12-15 nov 2015. ICSD, XX−XX.
3.2.
2015
Zekker I., Rikmann E., Tenno T., Loorits L., Vabamäe P., Mandel A., Raudkivi M., Daija L., Mihkelson J., Kroon K. (2015). NITROGEN REMOVAL IN COLD (9° C) ANAMMOX BIOFILM SYSTEM. 7 th Eastern European Young Water Professionals Conference, Belgrade, Serbia, 17-19 sept, 2015. ICD, XX−XX.
3.2.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Seiman, A.; Tenno, T.; Tenno, T. (2015). SMOOTH TEMPERATURE DECREASING FOR NITROGEN REMOVAL IN COLD (9-15° C) ANAMMOX BIOFILM REACTOR TESTS. 3rd Annual International Interdisciplinary Conference AIIC 2015 08-11, July, Azores, Portugal,. AIIC, 13−13.
3.2.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Kroon, K.; Seiman, A.; Tenno, T.; Tenno, T. (2015). Increased Nitrogen Removal In Cold (9-15° C) Deammonification Biofilm By Smooth Temperature Decrease. The 12th IWA Leading Edge Conference on Water and Wastewater Technologies, 30 may-3rd june, Hong Kong, China. IWA , XX−XX.
3.2.
2015
Daija L., Kolberg K., Selberg A., Rikmann E., Zekker I., Tenno T., Tenno T. (2015). INFLUENCE OF LOWER TEMPERATURE AND LONG RETENTION TIME ON THE PERFORMANCE OF UPFLOW-MODE LABORATORY-SCALE SEPTIC TANK. 7 th Eastern European Young Water Professionals Conference, Belgrade, Serbia, 17-19 sept, 2015.. ICD, XX−XX.
3.4.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Seiman, A.; Fritze, H.; Vabamäe, P.; Tenno, T.; Tenno, T. (2015). NITRIC OXIDE FOR ANAMMOX RECOVERY IN NITRITE-INHIBITED DEAMMONIFICATION. XVth World Water Congress, 25 - 29 May, Edinburgh, Scotland. IWA , XX−XX.
1.1.
2014
Rubin, S.C.D.C; Alava, P; Zekker, I; Du Laing, G; Van de Wiele, T. (2014). Arsenic Thiolation and the Role of Sulfate-Reducing Bacteria from the Human Intestinal Tract. Environmental Health Perspectives, 122 (8), 817−822. DOI: 10.1289/ehp.1307759.
1.1.
2014
Zekker, I; Rikmann, E; Tenno, T; Seiman, A; Loorits, L; Kroon, K; Tomingas, M; Vabamäe, P; Tenno, T. (2014). Nitritating-anammox biomass tolerant to high dissolved oxygen concentration and C/N ratio in treatment of yeast factory wastewater. Environmental Technology, 35 (12), 1565−1576.
1.1.
2014
Rikmann, Ergo; Zekker, Ivar; Tomingas, Martin; Vabamaee, Priit; Kroon, Kristel; Saluste, Alar; Tenno, Taavo; Menert, Anne; Loorits, Liis; Rubin, Sergio S. C. dC; Tenno, Toomas (2014). Comparison of sulfate-reducing and conventional Anammox upflow anaerobic sludge blanket reactors. Journal of Bioscience and Bioengineering, 118 (4), 426−433. DOI: 10.1016/j.jbiosc.2014.03.012.
3.4.
2014
Zekker, I; Rikmann, E; Mandel, A; Mihkelson, J; Tenno, T; Kroon, K; Tenno, T. (2014). Increased Nitrogen Removal in Cold 9-15°C Deammonification Biofilm Reactor Tests by Smooth temperature lowering. Global conference on energy, soil, water, air and environment, Dubai-United Arab Emirates, December11-12.: Global conference on energy, soil, water, air and environment, Dubai-United Arab Emirates, December11-12.. , 7−7.
3.4.
2014
Klein, K; Kivi, A; Klauson, D; Zekker, I; Trapido, M; Tenno, T. (2014). Treatment of Pyrolysis Process Wastewater from oil Shale Industry with Physico Chemical and Biological Methods. Global conference on energy, soil, water, air and environment, Dubai-United Arab Emirates, December11-12: Global conference on energy, soil, water, air and environment, Dubai-United Arab Emirates, December11-12. , 8−8.
5.2.
2014
Zekker, I; Rikmann, E; Tenno, T; Kroon, K; Vabamäe, P; Salo, E; Raudkivi, M; Loorits, L; Tenno, T. (2014). DEAMMONIFICATION PROCESS START-UP AFTER ENRICHMENT OF ANAMMOX MICROORGANISMS FROM REJECT WATER IN A MOVING BED BIOFILM REACTOR (MBBR). Conference Program IWA 6TH YOUNG WATER PROFESSIONALS CONFERENCE «EAST MEETS WEST» EASTERN EUROPEAN. ISTANBUL TURKEY 28-30 MAY 2014.
5.2.
2014
ZEKKER, I; RIKMANN, E; TENNO, T; LOORITS, L; KROON, K; FRITZE, H; TUOMIVIRTA, T; VABAMÄE, P; RAUDKIVI, M; MANDEL, A; DC. RUBIN, S; TENNO, T. (2014). NITRIC OXIDE FOR ANAMMOX RECOVERY IN NITRITE-INHIBITED DEAMMONIFICATION SYSTEM. Crete, Chania, 2014, 2-5 sept 4th Int Conf on Hazardous Waste management. Crete, Chania.
1.1.
2013
ZEKKER, I; RIKMANN, E; TENNO, T; KROON, K; VABAMÄE, P; SALO, E; LOORITS, L; RUBIN, S; TENNO, T (2013). Deammonification process start-up after enrichment of anammox microorganisms from reject water in a moving bed biofilm reactor (MBBR). Environmental Technology, 34 (23), 3095−3101. DOI: 10.1080/09593330.2013.803134.
3.4.
2013
Zekker, I; Kroon, K; Pitk, P; Rikmann, E; Tenno, T; Vabamäe, P; Loorits, L; Rubin, S; Fritze, H; Tuomivirta, T; Tenno, T. (2013). Anaerobic Ammonium Oxidation in Upflow Anaerobic Sludge Blanket Reactor for Reject Water Treatment. 6th Annual International Conference on Agriculture, 15-18 July 2013: Abstract Book. Ed. Papanikos, G. Athens, Greece, 77.
5.2.
2013
ZEKKER, Ivar; RIKMANN, Eergo; TENNO, Toomas; KROON, Kristel; VABAMÄE, Priit; Fritze, Hannu; Tuomivita, Tero; LOORITS, Liis; RUBIN, S; TENNO, Taavo (2013). Deammonification process start-up after enrichment of anammox microorganisms from reject water in a moving bed biofilm reactor (MBBR). Book of Abstracts Down to Earth, Tallinn University , Estonia: The 2nd Conference of Doctoral School of Earth Sciences and Ecology, Down to Earth; Tallinn University; Estonia; 16-17 May, 2013. Tallinn, 65−65.
5.2.
2013
ZEKKER, I; RIKMANN, E; TENNO, T; KROON, K; VABAMÄE, P; SALO, E; LOORITS, L; RUBIN, S; TENNO, T. (2013). Deammonification process start-up after enrichment of anammox microorganisms from reject water in a moving bed biofilm reactor (MBBR). Asset Management for Enhancing Energy Efficiency in Water and Wastewater Systems; Marbella, Hispaania; 2013, 24-26 april. Marbella, Hispaania.
5.2.
2013
Rikmann, E.; Zekker, I.; Saluste, A.; Tenno, T.; Tenno, T. (2013). Autotroofse lämmastikuärastuse käivitamine pilootskaalas. Eesti XXXIII Keemiapäevad; Tallinn, Eesti; 11 Oct, 2013..
5.2.
2013
Zekker, I.; Rikmann, E.; Kroon, K.; Vabamäe, P.; Tenno, T.; Loorits, L.; Tenno, T. (2013). ANAEROOBSE AMMONIUMLÄMMASTIKU OKSÜDATSIOONI PROTSESSI KIIRE KÄIVITAMINE SPETSIIFILISE SEEMNEMUDATA. Eesti XXXIII Keemiapäevad; Tallinn, Eesti; 11 Oct, 2013. , 75−75.
5.2.
2013
Zekker, I; Kroon, K; Pitk, P; Rikmann, E; Tenno, T; Vabamäe, P; Loorits, L; Rubin, S; Fritze, H; Tuomivirta, T; Tenno, T. (2013). Rapid start- up of autotrophic nitrogen removal process after inoculation with microorganisms from yeast factory anaerobic tank. TÜ ja TTÜ doktorikooli “Funktsionaalsed materjalid ja tehnoloogiad” kolmas teaduskonverents; Tallinn, Eesti; 07.-08.03.2013. Tallinn.
5.2.
2013
Rikmann, E; Saluste, A; Zekker, I; Selberg, A; Tenno, T; Tenno, T. (2013). Start- up of autotrophic nitrogen removal of reject water from anaerobic digestion of municipal wastewater sludge. TÜ ja TTÜ doktorikooli “Funktsionaalsed materjalid ja tehnoloogiad” kolmas teaduskonverents; Tallinn, Eesti; 07.-08.03.2013. Tallinn.
1.1.
2012
Liiv, Jüri ; Zekker, Ivar; Panov, Dmitri; Sammelselg, Väino; Tenno, Toomas; Järv, Jaak (2012). Chemical functionalization of a polyvinylidene fluoride surface. Polymer Journal, 45, 313−317. DOI: 10.1038/pj.2012.148.
1.1.
2012
Zekker, I.; Kroon, K.; Rikmann, E.; Tenno, T.; Tomingas, M.; Vabamäe, P.; Vlaeminck, S.E.; Tenno, T. (2012). Accelerating effect of hydroxylamine and hydrazine on nitrogen removal rate in moving bed biofilm reactor. Biodegradation, 23 (5), 739−749. DOI: 10.1007/s10532-012-9549-6.
1.1.
2012
Zekker, Ivar; Rikmann, Ergo; Tenno, Toomas; Vabamäe, Priit; Kroon, Kristel; Loorits, Liis; Saluste, Alar; Tenno, Taavo (2012). Effect of HCO3- concentration on anammox nitrogen removal rate in a moving bed biofilm reactor. Environmental Technology, 33 (20), 2263−2271. DOI: 10.1080/09593330.2012.665487.
1.1.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Vabamäe, P.; Tomingas, M.; Menert, A.; Loorits, L.; Tenno, T. (2012). Anammox Bacteria Enrichment and Phylogenic Analysis in Moving Bed Biofilm Reactors. Environmental Engineering Science, 29 (10), 946−950. DOI: 10.1089/ees.2011.0146.
1.1.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Lemmiksoo, V.; Menert, A.; Loorits, L.; Vabamäe, P.; Tomingas, M.; Tenno, T. (2012). Anammox enrichment from reject water on blank biofilm carriers and carriers containing nitrifying biomass: operation of two moving bed biofilm reactors (MBBR). Biodegradation, 23 (4), 547−560. DOI: 10.1007/s10532-011-9532-7.
1.1.
2012
Rikmann, E.; Zekker, I.; Tomingas, M.; Tenno, T.; Menert, A.; Loorits, L.; Tenno, T. (2012). Sulfate-reducing anaerobic ammonium oxidation as a potential treatment method for high nitrogen-content wastewater. Biodegradation, 23 (4), 509−524. DOI: 10.1007/s10532-011-9529-2.
1.1.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Saluste, A.; Tomingas, M.; Menert, A.; Loorits, L.; Lemmiksoo, V.; Tenno, T. (2012). Achieving nitritation and anammox enrichment in single moving- bed biofilm reactor treating reject water. Environmental Technology, 33 (6), 703−710. DOI: 10.1080/09593330.2011.588962.
1.1.
2012
Rikmann, E.; Zekker, I.; Kroon, K.; Saluste, A.; Vabamäe, P.; Tenno, T; Menert, A.; Loorits, L.; Tenno, T. (2012). Sulfate- reducing and nitrite-dependent anammox for ammonium removal. Communications in Agricultural and Applied Biological Sciences, 77, 1, 227−230.
1.2.
2012
Zekker, I.; Vlaeminck, S. E.; Bagchi, S.; Courtens, E.; De Clippeleir, H.; Kerckhof, F.-M.; Boon, N. (2012). Nitrifitseeriva biomassi selektsioon erinevatel ammoniumi kontsentratsioonidel. Communications in Agricultural and Applied Biological Sciences, 77 (1), 275−279.
1.2.
2012
Zekker, I; Rikmann, E; Tenno, T; Vabamäe, P; Kroon, K; Tomingas, M; Rubin, S. S.C. dC; Salo, E; Tenno, T. (2012). Anammox SBR for treatment of yeast factory wastewater. Hydrology Current Research, 3 (4, 4), 67−67.
5.2.
2012
Zekker, I.; Vlaeminck, S. E.; Bagchi, S.; Courtens, E.; De Clippeleir, H.; Kerckhof, F.-M.; Boon, N. (2012). Selecting nitrifying inocula on different ammonium concentrations. TÜ ja TTÜ doktorikooli “Funktsionaalsed materjalid ja tehnoloogiad” kolmas teaduskonverents, 29. veebruar -01. märts 2012, Tartu..
5.2.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Vabamäe, P.; Kroon, K.; Saluste, A.; Tenno, T. (2012). Ammonium removal by sulfate- reducing and nitrite- dependent anammox. The 14th International Symposium on Microbial Ecology, ISME14; Copenhagen, Denmark; 19-24 August 2012.. , 32−32.
5.2.
2012
Zekker, I; Rikmann, E; Tenno, T; Vabamäe, P; Kroon, K; Tomingas, M; Salo, E; Tenno, T. (2012). Anammox SBR for treatment of yeast factory wastewater. International conference on Hydrology and groundwater Expo, San Antonio, USA, 10-12 Sept 2012: International conference on Hydrology and groundwater Expo, San Antonio, USA, 10-12 Sept 2012. San Antonio, USA.
5.2.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Vabamäe, P.; Kroon, K.; Tomingas, M.; Saluste, A.; Tenno, T. (2012). Floc-based anammox biomass stability in SBR treating yeast factory wastewater. Scientific Programme: 4th Euchems Chemistry Congress, Praha, Tsehhi. 26-30 Aug. 2012.
5.2.
2012
Rubin, S; Zekker, I; Destino, C; Di Domenico, E. G. (2012). Post‐transcriptional Control and Inductive Genetic Regulation in an ‘almost’ Prokaryotic cell. Posttranscriptional regulation and epigenetics in microorganisms, Academy Palace; Brussels, Belgium; Nov 30th, 2012. Brussels, Belgium: x, 66−66.
5.2.
2012
Rubin, S. dC; Zekker, I; Di Domenico, E. G. (2012). Transcriptional Control and Inductive Genetic Regulation in an almost eukaryotic cell. Contact forum supported by the Royal Flemish Academy of Belgium for Sciences and the Arts organized by the National Committee for Microbiology and the Belgian Society for Microbiology Posttranscriptional regulation and epigenetics in microorganisms. Academy Palace, Hertogsstraat/Rue Ducale 1,– 1000 Brussels. November 30th 2012. http://www.icp.ucl.ac.be/bsm/BSMAffiche_2012.pdf.
5.2.
2012
dC Rubin, Sergio; Callewaert, Chris; Zekker, Ivar; Van de Wiele, Tom; Boon, Nico (2012). TOWARDS THE INTERACTOME BETWEEN SKIN MICROBIAL COMMUNITIES AND THE SKIN EPIDERMAL CELLS. "EPIDERMAL CELL BIOLOGY", Namur, Bruxelles, Belgium , October 13th, 2012. Namur, Bruxelles, Belgium , 16−16.
5.2.
2012
Schenkman, Sergio; Carvajal, Fernando; Zekker, Ivar; Torrechilhas, Ana; Destino, Chiara; Sergio S.C, dC Rubin (2012). Phylogenetic-based gonome gene annotation of Trypanosoma cruzi Trans-Sialidas. XVIII Anual Meeting of Brazilian Society of Protozoology, Caxambu, 7-9 November 2012 MG Brazil. Brazil, 19−19.
1.1.
2011
Zekker, Ivar; Tenno, Toomas; Selberg, Aare; Uiga, Kalev (2011). Dissolution Modeling and Experimental Measurement of CaS-H2O Binary System. Chinese Journal of Chemistry, 29 (11), 2327−2336. DOI: 10.1002/cjoc.201180399.
1.1.
2011
Uiga, Kalev; Tenno, Toomas; Zekker, Ivar ; Tenno, Taavo (2011). Dissolution modeling and potentiometric measurements of the SrS-H2O-gas system at normal pressure and temperature at salt concentrations of 0.125-2.924 mM. Journal of Sulfur Chemistry, 32 (2), 137−149. DOI: 10.1080/17415993.2011.551937.
1.1.
2011
Zekker, Ivar; Rikmann, Ergo; Tenno, Toomas; Menert, Anne; Lemmiksoo, Vallo; Saluste, Alar; Tenno, Taavo; Tomingas, Martin (2011). Modification of nitrifying biofilm into nitritating one by combination of increased free ammonia concentrations, lowered HRT and dissolved oxygen concentration. Journal of Environmental Sciences, 23 (7), 1113−1121. DOI: 10.1016/S1001-0742(10)60523-2.
3.2.
2011
Zekker, I.; Rikmann, E.; Tenno, T.; Saluste, A.; Lemmiksoo, V.; Menert, A.; Loorits, L.; Tenno, T. (2011). Achieving nitritation and anammox enrichment in single moving bed biofilm reactor treating reject water. AGRO 2011, 8th IWA International Symposium on Waste Management Problems in Agroindustries. Cesme, Izmir, Turkey, 22-24 June 2011. Proceedings, 2: AGRO 2011, 8th IWA International Symposium on Waste Management Problems in Agroindustries. , 827−828.
3.2.
2011
Rikmann, E.; Zekker, I.; Tomingas, M.; Tenno, T.; Menert, A.; Loorits, L.; Tenno, T. (2011). Sulfate-reducing anaerobic ammonium oxidation as a potential treatment method for high nitrogen-content wastewater. AGRO 2011, 8th IWA International Symposium on Waste Management Problems in Agroindustries. Cesme, Izmir, Turkey, 22-24 June 2011. Proceedings, 2: AGRO 2011, 8th IWA International Symposium on Waste Management Problems in Agroindustries. , 755−762.
5.2.
2011
Zekker, I.; Rikmann, E.; Tenno, T.; Menert, A.; Lemmiksoo, V.; Kolberg, K.; Tenno, T. (2011). Effect of bicarbonate concentration on Anaerobic ammonium oxidation for efficient autotrophic nitrogen removal. IWA Specialist Conference Water and Industry. Valladolid, Spain, 1-4 May 2011 : Final Program. Valladolid, Spain, 16.
5.2.
2011
Zekker, I.; Kroon, K.; Rikmann, E., Tenno, T.; Menert, A. Tenno, T. (2011). Anaeroobse ammooniumilämmastiku oksüdatsiooni protsessi kiirendamine NH2OH ja N2H4-ga = Acceleration of the oxidation process of ammonia nitrogen with the aid of NH2OH and N2H4. XXXII Eesti keemiapäevad : teaduskonverentsi teesid = 32th Estonian Chemistry Days : abstracts of scientific conference. Tartu Ülikooli Kirjastus, 114.
5.2.
2011
Zekker, I.; Tenno, T.; Tenno, T.; Lemmiksoo, V.; Rikmann, E.; Menert, A.; Kolberg, K.; Tomingas, M.; Kroon, K.; Vabamäe, P. (2011). Specific nitrite oxidation rate on high surfaced biofilm carriers dependent on free ammonia and temperature. 2nd Workshop on Bacterial and Fungal Biofilms, Ghent University Center for Sociomicrobiology, 22 September 2011. Ghent, Belgium.
5.2.
2011
Zekker, I.; Rikmann, E.; Tenno, T.; Menert, A.; Kroon, K.; Tomingas, M.; Vabamäe, P.; Tenno, T. (2011). Anaerobic ammonium oxidation process performance with optimum bicarbonate concentration. Agricultural Research. Abstract Book from the 4th Annual International Symposium on Agricultural Research 18-21 July 2011, Athens, Greece: 4th Annual International Symposium on Agriculture, 18-21 July 2011, Athens, Greece. Ed. Gregory T. Papanikos. The Athens Institute for Education and Research, 69−71.
5.2.
2011
Tomingas, M.; Zekker, I.; Rikmann, E.; Tenno, T.; Menert, A.; Kroon, K.; Tenno, T. (2011). Biological treatment of anaerobic digester supernatant by anaerobic ammonium oxidation method in UASB system. Abstract Book & Program: International Conference on Materials and Technologies for Green Chemistry, 5-9 September 2011, Talllinn, Estonia. Ed. Borissova, M., 140.
5.2.
2010
Zekker, I.; Tenno, T.; Tenno, T.; Lemmiksoo, V.; Rikmann, E.; Menert, A.; Kolberg, K. (2010). Research of specific nitrite oxidation rate on high surfaced biofilms carriers with free ammonia and temperature variations. Book of Abstracts: 3rd EuCheMS Chemistry Congress Chemistry - the Creative Force. 29 August - 2 September 2010, Nürnberg/Germany. The Gesellschaft Deutscher Chemiker (GDCh), 42.
6.05.2021

Ivar Zekker

https://www.etis.ee/CV/Ivar_Zekker/est
15.11.1983
58194858
ivar.zekker@ut.ee
H-9772-2018
Peamised tegevusvaldkonnad : raskmetallid, väärismetallid,seenekäitlus, reoveepuhastus lämmastiku- fosfori ja süsinikuühenditest, raskmetallide eemaldamine ja väärindamine reoveesettest ja kompostist. Apparatuur mõõtmisteks: Ioonkromatograaf, spektrofotomeetrid, Reoveereaktorid koos automaatikaga, settekäitlusseadmed,kontrollerid, tsentrifuugid, ion selektiivsed mõõtmised, TOC analüsaator, tsentraalse Ar and N2 kasutamise võimalused, glow box, nanoosakeste loendur, Leica valgusmikrokoop. Veekeemia, setete, raskmetalli analüüsi metoodikad ja vahendid, piloot reaktorid (3 m3). Koostöö Aqua Consult Baltic rahvusvahelise ettevõttega pilootseadmete opereerimisel

Teenistuskäik

Töökohad ja ametid
01.01.2020–31.12.2023   
Tartu Ülikool, Loodus- ja täppisteaduste valdkond, keemia instituut, Teadur (1,00)
01.01.2020–31.01.2023   
Tartu Ülikool, Loodus- ja täppisteaduste valdkond, keemia instituut, Kolloidkeemia teadur (1,00)
01.04.2017–...   
Tartu Ülikool, Loodus- ja täppisteaduste valdkond, keemia instituut, kolloid- ja keskkonnakeemia teadur (1,00)
01.01.2016–31.03.2017   
Tartu Ülikool, Loodus- ja täppisteaduste valdkond, keemia instituut, kolloid- ja keskkonnakeemia teadur (1,00)
01.06.2015–31.12.2015   
Tartu Ülikool, Loodus- ja tehnoloogiateaduskond, Tartu Ülikooli Keemia Instituut, kolloid- ja keskkonnakeemia teadur (0,90)
01.04.2014–31.05.2015   
Tartu Ülikool, Loodus- ja tehnoloogiateaduskond, Tartu Ülikooli Keemia Instituut, kolloid- ja keskkonnakeemia teadur (1,00)
01.07.2012–31.03.2014   
Tartu Ülikool, Loodus- ja tehnoloogiateaduskond, Tartu Ülikooli Keemia Instituut, keemik (1,00)
01.01.2012–30.06.2012   
Tartu Ülikool, Loodus- ja tehnoloogiateaduskond, Tartu Ülikooli Keemia Instituut, keemik (0,75)
01.03.2011–31.12.2011   
Tartu Ülikool, Loodus- ja tehnoloogiateaduskond, Tartu Ülikooli Keemia Instituut, keemik (1,00)
01.04.2009–28.02.2011   
Tartu Ülikool, Loodus- ja tehnoloogiateaduskond, Tartu Ülikooli Keemia Instituut, keemik (0,75)
01.05.2008–31.03.2009   
Tartu Ülikool, Loodus- ja tehnoloogiateaduskond, Tartu Ülikooli Keemia Instituut, keemik (0,50)
 
 
Haridustee
2017–31.12.2018   
Post-doc taotlus KTH Rootsi rahuldatud
01.09.2009–31.08.2013   
Tartu Ülikool PhD, Environmental Technology
2007–2009   
Tartu Ülikool MSc-2009
2003–31.08.2013   
Tartu Ülikool 2010-...-doktorantuur, Tartu Ülikool 2003-2009- MSc, Vastseliina Gümnaasium-1991-2003
 
 
Teadusorganisatsiooniline ja -administratiivne tegevus
2014−2014   
Jury member of PhD defence of Jekaterina Jefimova
2014−2020   
Jury member in MSc defences in TalTech in Industrial Ecology
2012−2020   
Jury member of BSc and MSc defence of Environmental Technology
2011−2012   
6 Months PhD research period in Ghent University, Labmet, Belgium
2008−2020   
keemik, lektor
 
 
Loometöö
2012–2020 Development of methodologies for fungal metal removal and recovery, full-scale and lab scale wastewater reactor operations for nutrient removal.
Development of methodology for hydrazine and hydroxylamine determination
Development of online oxidation reduction control for anammox nutrient removal reactors
Development of methodology for phosphorus removal in sequence batch reactor and batch mode.
Research of specific nitrite oxidation rate on high surfaced biofilms carriers with FA and temperature variations.
Zekker, I., Tenno, T., Tenno, T., Lemmiksoo, V., Rikmann, E., Menert, A.
Conference thesis: European Chemistry Congress- 29 Augus.
 
 
Lisainfo
Eeskujulik teenistuskäik
Editor ajakirjas : Water
Retsenseerinud ajakirjadele:
Environmental Technology, International Journal of Environmental Science and Technology,Bioresource Technology,Chemosphere,Journal of Chemical Technology & Biotechnology, Desalination and Water Treatment,Water,Water Research,Applied Microbiology and Biotechnology,Journal of Cleaner Production,Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, Bioprocess and Biosystems Engineering,Journal of Environmental Management,Reviews in Environmental Science and Biotechnology,Science of the Total Environment,ACS Omega,Chemical Engineering Journal, Chemical Papers,Energies,Environmental Science: Water Research & Technology,International Journal of Biotechnology and Molecular Biology Research, Journal of Environmental Chemical Engineering,Materials,Processes, RSC Advances,The Open Civil Engineering Journal,Water Environment Research, Water and Environment Journal

Kvalifikatsioon

Teaduskraadid
Ivar Zekker, Doctor's Degree, 2013, (sup) Taavo Tenno, Enrichment of anaerobic ammonium oxidizing bacteria for nitrogen removal from digester effluent and anammox process acceleration by intermediate compounds, University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University.
Ivar Zekker, Master's Degree, 2009, (sup) Vallo Lemmiksoo; Taavo Tenno, Lämmastikurikka Tallinna Reoveepuhasti settevee puhastamise uurimine kasutades anaeroobse ammooniumlämmastiku oksüdatsiooni meetodit (Research of Tallinn Wastewater Plant reject water treatment by anaerobic ammonia oxidation method), University of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University, Chair of Colloid and Environmental Chemistry.
Ivar Zekker, Phd student, (sup) Astrid Kännaste; Eve Runno-Paurson; Ülo Niinemets, Taimede stressireaktsiooni uurimine lähtudes Põhjamaade kliimamuutusest (Stress response of plants on the climate change of the Nordic region), Estonian University of Life Sciences
 
 
Teaduspreemiad ja tunnustused
2011, Ivar Zekker, Tartu Ülikooli Ökoloogia- ja Maateaduste doktorikooli Islandi ekspeditsiooni stipendium
2011, Ivar Zekker, SA Archimedes stipendium osaline doktoriõpe Genti Ülikoolis
2010, Ivar Zekker, Kristjan Jaak Stipendium
 
 
Teadustöö põhisuunad
ETIS KLASSIFIKAATOR: 4. Loodusteadused ja tehnika; 4.16. Biotehnoloogia (loodusteadused ja tehnika); CERCS KLASSIFIKAATOR: T490 Biotehnoloogia ; TÄPSUSTUS: Jäätmete käitlemine, taaskasutus, ringmajandus
ETIS KLASSIFIKAATOR: 1. Bio- ja keskkonnateadused; 1.12. Bio- ja keskkonnateadustega seotud uuringud, näiteks biotehnoloogia, molekulaarbioloogia, rakubioloogia, biofüüsika, majandus- ja tehnoloogiauuringud; CERCS KLASSIFIKAATOR: P330 Bioenergeetika
ETIS KLASSIFIKAATOR: 1. Bio- ja keskkonnateadused; 1.12. Bio- ja keskkonnateadustega seotud uuringud, näiteks biotehnoloogia, molekulaarbioloogia, rakubioloogia, biofüüsika, majandus- ja tehnoloogiauuringud; CERCS KLASSIFIKAATOR: P305 Keskkonnakeemia ; TÄPSUSTUS: Lämmastikurikaste reovete käitlemin ANAMMOX meetodil, Lämmastikurikaste reovete käitlemine anaeroobse ammoniumi oksüdatsiooni meetodil.
ETIS KLASSIFIKAATOR: 1. Bio- ja keskkonnateadused; 1.8. Keskkonnaseisundit ja keskkonnakaitset hõlmavad uuringud; CERCS KLASSIFIKAATOR: T270 Keskkonnatehnoloogia, reostuskontroll
 
 
Lisainfo
Kaitsnud Tudengid:
16.06.2011 Martin Tomingas 17.06.2013 mag
16.06.2011 Kristel Kroon 17.06.2013 mag
18.06.2012 Priit Vabamäe mag
18.06.2012 Kaarel Kahu bak
17.06.2014 Erik Salo bak
17.06.2013 Raimond Valler
04.02.2015 -... Jana Mihkelson mag
01.09.2015 -... Ly Reimus mag
31.08.2015 - .. Anni Mandel dok
2019 Triin Väisanen,mag
2020 Kelvin Ohimai, Antonio Manuel MSc
2021 Esther Michael, BSc
2021 Opakunle Abimbola, BSc

Jooksvad projektid

Lõppenud projektid

Juhendamisel väitekirjad

Juhendatud väitekirjad

Publikatsioonid

Klass
Aasta
Publikatsioon
 
1.1.
2021
Zekker, I., Raudkivi, M., Artemchuk, O., Rikmann, E., Priks, H., Jaagura, M., Tenno, T. (2021). Mainstream-sidestream wastewater switching promotes anammox nitrogen removal rate in organic-rich, low-temperature streams. Environmental Technology. DOI: 10.1080/09593330.2020.1721566.
1.1.
2021
Zekker, Ivar; Artemchuk, Oleg; Rikmann, Ergo; Ohimai, Kelvin; Browmick, Gourav Dhar; Ghangrekar, Makarand; Burlakovs, Juris; Tenno, Taavo (2021). Title: Start-up of anammox SBR from non-specific inoculum and processacceleration methods by hydrazine. Water, XX (XX, XX), XX−XX.
1.1.
2021
Rikmann, Ergo; Zekker, Ivar; Teppand, Tõnis; Pallav, Vello; Shanskiy, Merrit; Mäeorg, Uno; Tenno, Toomas; Burlakovs, Juris; Liiv, Jüri (2021). Relationship between Phase Composition and Mechanical Properties of Peat Soils Stabilized Using Oil Shale Ash and Pozzolanic Additive. Water, 13 (7), 942. DOI: 10.3390/w13070942.
1.1.
2021
Umar, A; Sufaid, M.; Khan; Sultan, A.; Zekker, I; Burlakovs, J; Rubin, S; Bhowmick, G; Kallistova,A; Pimenov, N; Zahoor, M. (2021). Synthesis and Characterization of Pd-Ni Bimetallic Nanoparticles as Efficient Adsorbent for the Removal of Acid Orange 8 Present in Wastewater. Water, 13 (8, X), 1095−1095. DOI: 10.3390/w13081095 .
1.1.
2021
Alam, S; Khan, M.S., Umar, A; Khattak R; Rahman, N; Zekker, I; Burlakovs, J; Rubin, S; Ghangrekar, M; Bhowmick, G; Kallistova, A; Pimenov, N; Khan, A; Zahoor, M. (2021). Preparation of Pd-Ni nanoparticles supported on activated carbon for efficient removal of basic blue 3 from water. Water, X (X, X), X−X [ilmumas].
3.1.
2021
Zekker, I. (2021). Deammonification Biofilm Is Achieved At 9-15° C Low Temperature System. X: 10th International Conference on Biofilm Reactors, Dublin, Ireland, 9-12 May, 2017. IWA , XX−XX [ilmumas].
1.1.
2020
Liiv, J.; Zekker, Ivar; Zekker; Tämm, K., Rikmann, E. (2020). Greenhouse gases emissions and climate change - beyond mainstream. MOJ Bioorganic & Organic Chemistry, 4 (1), 11−16. DOI: 10.15406/mojboc.2020.04.00104.
1.1.
2020
Zekker, Ivar; Bhowmick, Gourav Dhar; Priks, Hans; Nath, Dibyojyoty; Rikmann, Ergo; Jaagura, Madis; Tenno, Taavo; Tämm, Kaido; Ghangrekar, Makarand Madhao (2020). ANAMMOX-denitrification biomass in microbial fuel cell to enhance the electricity generation and nitrogen removal efficiency. Biodegradation, 31, 249−264. DOI: 10.1007/s10532-020-09907-w.
1.1.
2020
Uiga, K; Rikmann, E; Zekker, I; Mashirin, A; Tenno T (2020). Modelling and experimental measurement of the closed equilibrium system of H2O–SrS. Proceedings of the Estonian Academy of Sciences, 69 (4), 287−297. DOI: 10.3176/proc.2020.4.02.
1.1.
2020
Uiga, K.; Rikmann, E.; Zekker, I.; Tenno, T. (2020). Detection and dissolution of sparingly soluble srs and cas particles in aqueous media depending on their size distribution. Proceedings of the Estonian Academy of Sciences, 69 (4), 323−330. DOI: 10.3176/proc.2020.4.07.
1.1.
2019
Zekker, Ivar; Kiviruut, Aimar; Rikmann, Ergo; Mandel, Anni; Jaagura, Madis; Tenno, Toomas; Artemchuk, Oleg; Rubin, Sergio dC; Tenno, Taavo (2019). Enhanced Efficiency of Nitritating-Anammox Sequencing Batch Reactor Achieved at Low Decrease Rates of Oxidation-Reduction Potential. Environmental Engineering Science, 36 (3), 350−360. DOI: 10.1089/ees.2018.0225.
1.1.
2019
Mandel, A.; Zekker, I; Jaagura, M.; Tenno, T. (2019). Enhancement of anoxic phosphorus uptake of denitrifying phosphorus removal process by biomass adaption. International Journal of Environmental Science and Technology, 16 (10), 5965−5978. DOI: 10.1007/s13762-018-02194-2.
1.1.
2018
Rikmann, E.; Zekker, I.; Tenno, T.; Saluste, A.; Tenno, T. (2018). Inoculum-free start-up of biofilm- and sludge-based deammonification systems in pilot scale. International Journal of Environmental Science and Technology, 15 (1), 133−148. DOI: 10.1007/s13762-017-1374-3.
1.1.
2018
Tenno, T.Uiga, K., Mashirin, A., Zekker, I., Rikmann, E.,Tenno, T. (2018). A novel proton transfer model of closed equilibrium systems of H2O–CO2–CaCO3–NHX. Proceedings of Estonian Academy of Sciences, 67 (3), 260−270. DOI: 10.3176/proc.2018.3.04.
1.1.
2018
Tenno, Toomas; Rikmann, Ergo; Zekker, Ivar; Tenno, Taavo (2018). Modelling the solubility of sparingly soluble compounds depending on their particles size. Proceedings of the Estonian Academy of Sciences, 67 (3, 2), 300−302. DOI: 10.3176/proc.2018.3.10.
1.1.
2017
Raudkivi, Markus; Zekker, Ivar; Rikmann, Ergo; Vabamae, Priit; Kroon, Kristel; Tenno, Taavo (2017). Nitrite inhibition and limitation - the effect of nitrite spiking on anammox biofilm, suspended and granular biomass. Water Science & Technology, 75 (2), 313−321. DOI: 10.2166/wst.2016.456.
1.1.
2017
Klein, Kati; Kivi, Arthur; Dulova, Niina; Zekker, Ivar; Mölder, Erik; Tenno, Toomas; Trapido, Marina; Tenno, Taavo (2017). A pilot study of three-stage biological-chemical treatment of landfill leachate applying continuous ferric sludge reuse in Fenton-like process. Clean Technologies and Environmental Policy, 19 (2), 541−551. DOI: 10.1007/s10098-016-1245-5.
1.1.
2017
Tenno, Toomas; Uiga, Kalev; Mashirin, Alexsey; Zekker, Ivar; Rikmann, Ergo (2017).

Modelling Closed Equilibrium Systems of H2O–dissolved CO2–solid CaCO3

. The Journal of Physical Chemistry A, 121 (16), 3094−3100. DOI: 10.1021/acs.jpca.7b00237.
1.1.
2017
Zekker, I., Rikmann, E., Kroon, K., Mandel, A., Mihkelson, J., Tenno, T., Tenno, T. (2017). Ameliorating nitrite inhibition in a low-temperature nitritation–anammox MBBR using bacterial intermediate nitric oxide. International Journal of Environmental Science and Technology, 14 (11), 2343−2356. DOI: 10.1007/s13762-017-1321-3.
1.1.
2017
Klein, Kati; Kattel, Eneliis; Goi, Anna; Kivi, Arthur; Dulova, Niina; Saluste, Alar; Zekker, Ivar; Trapido, Marina; Tenno, Taavo (2017). Combined treatment of pyrogenic wastewater from oil shale retorting. Oil Shale, 34 (1), 82−96. DOI: 10.3176/oil.2017.1.06.
1.1.
2017
Rubin, S., Irma Marín, I., Manuel J Gómez, Zekker, I., Ricardo Amils (2017). Prokaryotic diversity and community composition in the Salar de Uyuni, a large scale, chaotropic salt flat. Environmental Microbiology, 19 (9), 3745−3754. DOI: 10.1111/1462-2920.13876.
1.1.
2017
Raudkivi, Markus; Zekker, Ivar; Rikmann, Ergo; Vabamae, Priit; Kroon, Kristel; Tenno, Taavo (2017). Nitrite inhibition and limitation - the effect of nitrite spiking on anammox biofilm, suspended and granular biomass. Water Science & Technology, 75 (2), 313−321. DOI: 10.2166/wst.2016.456.
3.4.
2017
Zekker, I. (2017). Anammox process nitrite inhibition and nitrite-adaption. X: Nordiva conference, Aarhus, Denmark, 10-12 Oct, 2017. nordiva, X−X.
1.1.
2016
Daija, Laura; Selberg, Aare; Rikmann, Ergo; Zekker, Ivar; Tenno, Taavo; Tenno, Toomas (2016). The influence of lower temperature, influent fluctuations and long retention time on the performance of an upflow mode laboratory-scale septic tank. Desalination and Water Treatment, 57 (40), 18679−18687.10.1080/19443994.2015.1094421.
1.1.
2016
Toomas Tenno, Ergo Rikmann, Ivar Zekker, Taavo Tenno, Laura Daija, Alexey Mashirin (2016). Modelling equilibrium distribution of carbonaceous ions and molecules in a heterogeneous system of CaCO3–water–gas. Proceedings of the Estonian Academy of Sciences. Chemistry, 65 (1), 68−77. DOI: 10.3176/proc.2016.1.07.
1.1.
2016
Zekker, Ivar; Rikmann, Ergo; Mandel, Anni; Kroon, Kristel; Seiman, Andrus; Mihkelson, Jana; Tenno, Taavo; Tenno, Toomas (2016). Step-wise temperature decreasing cultivates a biofilm with high nitrogen removal rates at 9 degrees C in short-term anammox biofilm tests. Environmental Technology, 37 (15), 1933−1946.10.1080/09593330.2015.1135995.
1.2.
2016
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Seiman, A.; Fritze, H.; Vabamäe, P.; Tenno, T.; Tenno, T. (2016). Increased Nitrogen Removal in Cold Deammonification Biofilm Reactor (9-15°c) By Smooth Temperature Decreasing. Environmental and Ecological Engineering, 2, 1933−1946. DOI: 10.1080%2F09593330.2015.1135995.
1.1.
2015
Zekker, I.; Rikmann, E.; Tenno, T.; Loorits, L.; Kroon, K.; Vabamäe, P.; Mandel, A.; Raudkivi, M.; Daija, L.; RUBIN, S. S.C. DC.; Tenno, T. (2015). Nitric oxide for anammox recovery in nitrite-inhibited deammonification system. Environmental Technology, 36 (19), 2477−2487. DOI: 10.1080/09593330.2015.1034791.
1.1.
2015
Rikmann, E.; Zekker, I.; Tomingas, M.; Tenno, T.; Loorits, L.; Vabamäe, P.; Mandel, A.; Raudkivi, M.; Daija, L.; Kroon, K.; Tenno, T. (2015). Sulfate-reducing Anammox for Sulfate and Nitrogen Containing Wastewaters. Desalination and Water Treatment, 57 (7), 3132−3141. DOI: 10.1080/19443994.2014.984339.
1.1.
2015
Zekker, Ivar; Rikmann, Ergo; Tenno, Toomas; Kroon, Kristel; Seiman, Andrus; Loorits, Liis; Fritze, Hannu; Tuomivirta, Tero; Vabamäe, Priit; Raudkivi, Markus; Mandel, Anni; Tenno, Taavo (2015). Start-up of low-temperature anammox in UASB from mesophilic yeast factory anaerobic tank inoculum. Environmental Technology, 36 (2), 214−225. DOI: 10.1080/09593330.2014.941946.
1.2.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Seiman, A.; Tenno, T.; Tenno, T. (2015). SMOOTH TEMPERATURE DECREASING FOR NITROGEN REMOVAL IN COLD (9-15° C) ANAMMOX BIOFILM REACTOR TESTS. European Scientific Journal ESJ, 508−525.
3.2.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Tenno, T.; Tenno, T. (2015). High nitrite concentration inhibits nitrite-adapted granular anammox biomass less compared to biofilm. ICSD, Belgrad, 12-15 nov 2015. ICSD, XX−XX.
3.2.
2015
Zekker I., Rikmann E., Tenno T., Loorits L., Vabamäe P., Mandel A., Raudkivi M., Daija L., Mihkelson J., Kroon K. (2015). NITROGEN REMOVAL IN COLD (9° C) ANAMMOX BIOFILM SYSTEM. 7 th Eastern European Young Water Professionals Conference, Belgrade, Serbia, 17-19 sept, 2015. ICD, XX−XX.
3.2.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Seiman, A.; Tenno, T.; Tenno, T. (2015). SMOOTH TEMPERATURE DECREASING FOR NITROGEN REMOVAL IN COLD (9-15° C) ANAMMOX BIOFILM REACTOR TESTS. 3rd Annual International Interdisciplinary Conference AIIC 2015 08-11, July, Azores, Portugal,. AIIC, 13−13.
3.2.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Kroon, K.; Seiman, A.; Tenno, T.; Tenno, T. (2015). Increased Nitrogen Removal In Cold (9-15° C) Deammonification Biofilm By Smooth Temperature Decrease. The 12th IWA Leading Edge Conference on Water and Wastewater Technologies, 30 may-3rd june, Hong Kong, China. IWA , XX−XX.
3.2.
2015
Daija L., Kolberg K., Selberg A., Rikmann E., Zekker I., Tenno T., Tenno T. (2015). INFLUENCE OF LOWER TEMPERATURE AND LONG RETENTION TIME ON THE PERFORMANCE OF UPFLOW-MODE LABORATORY-SCALE SEPTIC TANK. 7 th Eastern European Young Water Professionals Conference, Belgrade, Serbia, 17-19 sept, 2015.. ICD, XX−XX.
3.4.
2015
Zekker, I.; Rikmann, E.; Mandel, A.; Raudkivi, M.; Kroon, K.; Loorits, L.; Seiman, A.; Fritze, H.; Vabamäe, P.; Tenno, T.; Tenno, T. (2015). NITRIC OXIDE FOR ANAMMOX RECOVERY IN NITRITE-INHIBITED DEAMMONIFICATION. XVth World Water Congress, 25 - 29 May, Edinburgh, Scotland. IWA , XX−XX.
1.1.
2014
Rubin, S.C.D.C; Alava, P; Zekker, I; Du Laing, G; Van de Wiele, T. (2014). Arsenic Thiolation and the Role of Sulfate-Reducing Bacteria from the Human Intestinal Tract. Environmental Health Perspectives, 122 (8), 817−822. DOI: 10.1289/ehp.1307759.
1.1.
2014
Zekker, I; Rikmann, E; Tenno, T; Seiman, A; Loorits, L; Kroon, K; Tomingas, M; Vabamäe, P; Tenno, T. (2014). Nitritating-anammox biomass tolerant to high dissolved oxygen concentration and C/N ratio in treatment of yeast factory wastewater. Environmental Technology, 35 (12), 1565−1576.
1.1.
2014
Rikmann, Ergo; Zekker, Ivar; Tomingas, Martin; Vabamaee, Priit; Kroon, Kristel; Saluste, Alar; Tenno, Taavo; Menert, Anne; Loorits, Liis; Rubin, Sergio S. C. dC; Tenno, Toomas (2014). Comparison of sulfate-reducing and conventional Anammox upflow anaerobic sludge blanket reactors. Journal of Bioscience and Bioengineering, 118 (4), 426−433. DOI: 10.1016/j.jbiosc.2014.03.012.
3.4.
2014
Zekker, I; Rikmann, E; Mandel, A; Mihkelson, J; Tenno, T; Kroon, K; Tenno, T. (2014). Increased Nitrogen Removal in Cold 9-15°C Deammonification Biofilm Reactor Tests by Smooth temperature lowering. Global conference on energy, soil, water, air and environment, Dubai-United Arab Emirates, December11-12.: Global conference on energy, soil, water, air and environment, Dubai-United Arab Emirates, December11-12.. , 7−7.
3.4.
2014
Klein, K; Kivi, A; Klauson, D; Zekker, I; Trapido, M; Tenno, T. (2014). Treatment of Pyrolysis Process Wastewater from oil Shale Industry with Physico Chemical and Biological Methods. Global conference on energy, soil, water, air and environment, Dubai-United Arab Emirates, December11-12: Global conference on energy, soil, water, air and environment, Dubai-United Arab Emirates, December11-12. , 8−8.
5.2.
2014
Zekker, I; Rikmann, E; Tenno, T; Kroon, K; Vabamäe, P; Salo, E; Raudkivi, M; Loorits, L; Tenno, T. (2014). DEAMMONIFICATION PROCESS START-UP AFTER ENRICHMENT OF ANAMMOX MICROORGANISMS FROM REJECT WATER IN A MOVING BED BIOFILM REACTOR (MBBR). Conference Program IWA 6TH YOUNG WATER PROFESSIONALS CONFERENCE «EAST MEETS WEST» EASTERN EUROPEAN. ISTANBUL TURKEY 28-30 MAY 2014.
5.2.
2014
ZEKKER, I; RIKMANN, E; TENNO, T; LOORITS, L; KROON, K; FRITZE, H; TUOMIVIRTA, T; VABAMÄE, P; RAUDKIVI, M; MANDEL, A; DC. RUBIN, S; TENNO, T. (2014). NITRIC OXIDE FOR ANAMMOX RECOVERY IN NITRITE-INHIBITED DEAMMONIFICATION SYSTEM. Crete, Chania, 2014, 2-5 sept 4th Int Conf on Hazardous Waste management. Crete, Chania.
1.1.
2013
ZEKKER, I; RIKMANN, E; TENNO, T; KROON, K; VABAMÄE, P; SALO, E; LOORITS, L; RUBIN, S; TENNO, T (2013). Deammonification process start-up after enrichment of anammox microorganisms from reject water in a moving bed biofilm reactor (MBBR). Environmental Technology, 34 (23), 3095−3101. DOI: 10.1080/09593330.2013.803134.
3.4.
2013
Zekker, I; Kroon, K; Pitk, P; Rikmann, E; Tenno, T; Vabamäe, P; Loorits, L; Rubin, S; Fritze, H; Tuomivirta, T; Tenno, T. (2013). Anaerobic Ammonium Oxidation in Upflow Anaerobic Sludge Blanket Reactor for Reject Water Treatment. 6th Annual International Conference on Agriculture, 15-18 July 2013: Abstract Book. Ed. Papanikos, G. Athens, Greece, 77.
5.2.
2013
ZEKKER, Ivar; RIKMANN, Eergo; TENNO, Toomas; KROON, Kristel; VABAMÄE, Priit; Fritze, Hannu; Tuomivita, Tero; LOORITS, Liis; RUBIN, S; TENNO, Taavo (2013). Deammonification process start-up after enrichment of anammox microorganisms from reject water in a moving bed biofilm reactor (MBBR). Book of Abstracts Down to Earth, Tallinn University , Estonia: The 2nd Conference of Doctoral School of Earth Sciences and Ecology, Down to Earth; Tallinn University; Estonia; 16-17 May, 2013. Tallinn, 65−65.
5.2.
2013
ZEKKER, I; RIKMANN, E; TENNO, T; KROON, K; VABAMÄE, P; SALO, E; LOORITS, L; RUBIN, S; TENNO, T. (2013). Deammonification process start-up after enrichment of anammox microorganisms from reject water in a moving bed biofilm reactor (MBBR). Asset Management for Enhancing Energy Efficiency in Water and Wastewater Systems; Marbella, Hispaania; 2013, 24-26 april. Marbella, Hispaania.
5.2.
2013
Rikmann, E.; Zekker, I.; Saluste, A.; Tenno, T.; Tenno, T. (2013). Autotroofse lämmastikuärastuse käivitamine pilootskaalas. Eesti XXXIII Keemiapäevad; Tallinn, Eesti; 11 Oct, 2013..
5.2.
2013
Zekker, I.; Rikmann, E.; Kroon, K.; Vabamäe, P.; Tenno, T.; Loorits, L.; Tenno, T. (2013). ANAEROOBSE AMMONIUMLÄMMASTIKU OKSÜDATSIOONI PROTSESSI KIIRE KÄIVITAMINE SPETSIIFILISE SEEMNEMUDATA. Eesti XXXIII Keemiapäevad; Tallinn, Eesti; 11 Oct, 2013. , 75−75.
5.2.
2013
Zekker, I; Kroon, K; Pitk, P; Rikmann, E; Tenno, T; Vabamäe, P; Loorits, L; Rubin, S; Fritze, H; Tuomivirta, T; Tenno, T. (2013). Rapid start- up of autotrophic nitrogen removal process after inoculation with microorganisms from yeast factory anaerobic tank. TÜ ja TTÜ doktorikooli “Funktsionaalsed materjalid ja tehnoloogiad” kolmas teaduskonverents; Tallinn, Eesti; 07.-08.03.2013. Tallinn.
5.2.
2013
Rikmann, E; Saluste, A; Zekker, I; Selberg, A; Tenno, T; Tenno, T. (2013). Start- up of autotrophic nitrogen removal of reject water from anaerobic digestion of municipal wastewater sludge. TÜ ja TTÜ doktorikooli “Funktsionaalsed materjalid ja tehnoloogiad” kolmas teaduskonverents; Tallinn, Eesti; 07.-08.03.2013. Tallinn.
1.1.
2012
Liiv, Jüri ; Zekker, Ivar; Panov, Dmitri; Sammelselg, Väino; Tenno, Toomas; Järv, Jaak (2012). Chemical functionalization of a polyvinylidene fluoride surface. Polymer Journal, 45, 313−317. DOI: 10.1038/pj.2012.148.
1.1.
2012
Zekker, I.; Kroon, K.; Rikmann, E.; Tenno, T.; Tomingas, M.; Vabamäe, P.; Vlaeminck, S.E.; Tenno, T. (2012). Accelerating effect of hydroxylamine and hydrazine on nitrogen removal rate in moving bed biofilm reactor. Biodegradation, 23 (5), 739−749. DOI: 10.1007/s10532-012-9549-6.
1.1.
2012
Zekker, Ivar; Rikmann, Ergo; Tenno, Toomas; Vabamäe, Priit; Kroon, Kristel; Loorits, Liis; Saluste, Alar; Tenno, Taavo (2012). Effect of HCO3- concentration on anammox nitrogen removal rate in a moving bed biofilm reactor. Environmental Technology, 33 (20), 2263−2271. DOI: 10.1080/09593330.2012.665487.
1.1.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Vabamäe, P.; Tomingas, M.; Menert, A.; Loorits, L.; Tenno, T. (2012). Anammox Bacteria Enrichment and Phylogenic Analysis in Moving Bed Biofilm Reactors. Environmental Engineering Science, 29 (10), 946−950. DOI: 10.1089/ees.2011.0146.
1.1.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Lemmiksoo, V.; Menert, A.; Loorits, L.; Vabamäe, P.; Tomingas, M.; Tenno, T. (2012). Anammox enrichment from reject water on blank biofilm carriers and carriers containing nitrifying biomass: operation of two moving bed biofilm reactors (MBBR). Biodegradation, 23 (4), 547−560. DOI: 10.1007/s10532-011-9532-7.
1.1.
2012
Rikmann, E.; Zekker, I.; Tomingas, M.; Tenno, T.; Menert, A.; Loorits, L.; Tenno, T. (2012). Sulfate-reducing anaerobic ammonium oxidation as a potential treatment method for high nitrogen-content wastewater. Biodegradation, 23 (4), 509−524. DOI: 10.1007/s10532-011-9529-2.
1.1.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Saluste, A.; Tomingas, M.; Menert, A.; Loorits, L.; Lemmiksoo, V.; Tenno, T. (2012). Achieving nitritation and anammox enrichment in single moving- bed biofilm reactor treating reject water. Environmental Technology, 33 (6), 703−710. DOI: 10.1080/09593330.2011.588962.
1.1.
2012
Rikmann, E.; Zekker, I.; Kroon, K.; Saluste, A.; Vabamäe, P.; Tenno, T; Menert, A.; Loorits, L.; Tenno, T. (2012). Sulfate- reducing and nitrite-dependent anammox for ammonium removal. Communications in Agricultural and Applied Biological Sciences, 77, 1, 227−230.
1.2.
2012
Zekker, I.; Vlaeminck, S. E.; Bagchi, S.; Courtens, E.; De Clippeleir, H.; Kerckhof, F.-M.; Boon, N. (2012). Nitrifitseeriva biomassi selektsioon erinevatel ammoniumi kontsentratsioonidel. Communications in Agricultural and Applied Biological Sciences, 77 (1), 275−279.
1.2.
2012
Zekker, I; Rikmann, E; Tenno, T; Vabamäe, P; Kroon, K; Tomingas, M; Rubin, S. S.C. dC; Salo, E; Tenno, T. (2012). Anammox SBR for treatment of yeast factory wastewater. Hydrology Current Research, 3 (4, 4), 67−67.
5.2.
2012
Zekker, I.; Vlaeminck, S. E.; Bagchi, S.; Courtens, E.; De Clippeleir, H.; Kerckhof, F.-M.; Boon, N. (2012). Selecting nitrifying inocula on different ammonium concentrations. TÜ ja TTÜ doktorikooli “Funktsionaalsed materjalid ja tehnoloogiad” kolmas teaduskonverents, 29. veebruar -01. märts 2012, Tartu..
5.2.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Vabamäe, P.; Kroon, K.; Saluste, A.; Tenno, T. (2012). Ammonium removal by sulfate- reducing and nitrite- dependent anammox. The 14th International Symposium on Microbial Ecology, ISME14; Copenhagen, Denmark; 19-24 August 2012.. , 32−32.
5.2.
2012
Zekker, I; Rikmann, E; Tenno, T; Vabamäe, P; Kroon, K; Tomingas, M; Salo, E; Tenno, T. (2012). Anammox SBR for treatment of yeast factory wastewater. International conference on Hydrology and groundwater Expo, San Antonio, USA, 10-12 Sept 2012: International conference on Hydrology and groundwater Expo, San Antonio, USA, 10-12 Sept 2012. San Antonio, USA.
5.2.
2012
Zekker, I.; Rikmann, E.; Tenno, T.; Vabamäe, P.; Kroon, K.; Tomingas, M.; Saluste, A.; Tenno, T. (2012). Floc-based anammox biomass stability in SBR treating yeast factory wastewater. Scientific Programme: 4th Euchems Chemistry Congress, Praha, Tsehhi. 26-30 Aug. 2012.
5.2.
2012
Rubin, S; Zekker, I; Destino, C; Di Domenico, E. G. (2012). Post‐transcriptional Control and Inductive Genetic Regulation in an ‘almost’ Prokaryotic cell. Posttranscriptional regulation and epigenetics in microorganisms, Academy Palace; Brussels, Belgium; Nov 30th, 2012. Brussels, Belgium: x, 66−66.
5.2.
2012
Rubin, S. dC; Zekker, I; Di Domenico, E. G. (2012). Transcriptional Control and Inductive Genetic Regulation in an almost eukaryotic cell. Contact forum supported by the Royal Flemish Academy of Belgium for Sciences and the Arts organized by the National Committee for Microbiology and the Belgian Society for Microbiology Posttranscriptional regulation and epigenetics in microorganisms. Academy Palace, Hertogsstraat/Rue Ducale 1,– 1000 Brussels. November 30th 2012. http://www.icp.ucl.ac.be/bsm/BSMAffiche_2012.pdf.
5.2.
2012
dC Rubin, Sergio; Callewaert, Chris; Zekker, Ivar; Van de Wiele, Tom; Boon, Nico (2012). TOWARDS THE INTERACTOME BETWEEN SKIN MICROBIAL COMMUNITIES AND THE SKIN EPIDERMAL CELLS. "EPIDERMAL CELL BIOLOGY", Namur, Bruxelles, Belgium , October 13th, 2012. Namur, Bruxelles, Belgium , 16−16.
5.2.
2012
Schenkman, Sergio; Carvajal, Fernando; Zekker, Ivar; Torrechilhas, Ana; Destino, Chiara; Sergio S.C, dC Rubin (2012). Phylogenetic-based gonome gene annotation of Trypanosoma cruzi Trans-Sialidas. XVIII Anual Meeting of Brazilian Society of Protozoology, Caxambu, 7-9 November 2012 MG Brazil. Brazil, 19−19.
1.1.
2011
Zekker, Ivar; Tenno, Toomas; Selberg, Aare; Uiga, Kalev (2011). Dissolution Modeling and Experimental Measurement of CaS-H2O Binary System. Chinese Journal of Chemistry, 29 (11), 2327−2336. DOI: 10.1002/cjoc.201180399.
1.1.
2011
Uiga, Kalev; Tenno, Toomas; Zekker, Ivar ; Tenno, Taavo (2011). Dissolution modeling and potentiometric measurements of the SrS-H2O-gas system at normal pressure and temperature at salt concentrations of 0.125-2.924 mM. Journal of Sulfur Chemistry, 32 (2), 137−149. DOI: 10.1080/17415993.2011.551937.
1.1.
2011
Zekker, Ivar; Rikmann, Ergo; Tenno, Toomas; Menert, Anne; Lemmiksoo, Vallo; Saluste, Alar; Tenno, Taavo; Tomingas, Martin (2011). Modification of nitrifying biofilm into nitritating one by combination of increased free ammonia concentrations, lowered HRT and dissolved oxygen concentration. Journal of Environmental Sciences, 23 (7), 1113−1121. DOI: 10.1016/S1001-0742(10)60523-2.
3.2.
2011
Zekker, I.; Rikmann, E.; Tenno, T.; Saluste, A.; Lemmiksoo, V.; Menert, A.; Loorits, L.; Tenno, T. (2011). Achieving nitritation and anammox enrichment in single moving bed biofilm reactor treating reject water. AGRO 2011, 8th IWA International Symposium on Waste Management Problems in Agroindustries. Cesme, Izmir, Turkey, 22-24 June 2011. Proceedings, 2: AGRO 2011, 8th IWA International Symposium on Waste Management Problems in Agroindustries. , 827−828.
3.2.
2011
Rikmann, E.; Zekker, I.; Tomingas, M.; Tenno, T.; Menert, A.; Loorits, L.; Tenno, T. (2011). Sulfate-reducing anaerobic ammonium oxidation as a potential treatment method for high nitrogen-content wastewater. AGRO 2011, 8th IWA International Symposium on Waste Management Problems in Agroindustries. Cesme, Izmir, Turkey, 22-24 June 2011. Proceedings, 2: AGRO 2011, 8th IWA International Symposium on Waste Management Problems in Agroindustries. , 755−762.
5.2.
2011
Zekker, I.; Rikmann, E.; Tenno, T.; Menert, A.; Lemmiksoo, V.; Kolberg, K.; Tenno, T. (2011). Effect of bicarbonate concentration on Anaerobic ammonium oxidation for efficient autotrophic nitrogen removal. IWA Specialist Conference Water and Industry. Valladolid, Spain, 1-4 May 2011 : Final Program. Valladolid, Spain, 16.
5.2.
2011
Zekker, I.; Kroon, K.; Rikmann, E., Tenno, T.; Menert, A. Tenno, T. (2011). Anaeroobse ammooniumilämmastiku oksüdatsiooni protsessi kiirendamine NH2OH ja N2H4-ga = Acceleration of the oxidation process of ammonia nitrogen with the aid of NH2OH and N2H4. XXXII Eesti keemiapäevad : teaduskonverentsi teesid = 32th Estonian Chemistry Days : abstracts of scientific conference. Tartu Ülikooli Kirjastus, 114.
5.2.
2011
Zekker, I.; Tenno, T.; Tenno, T.; Lemmiksoo, V.; Rikmann, E.; Menert, A.; Kolberg, K.; Tomingas, M.; Kroon, K.; Vabamäe, P. (2011). Specific nitrite oxidation rate on high surfaced biofilm carriers dependent on free ammonia and temperature. 2nd Workshop on Bacterial and Fungal Biofilms, Ghent University Center for Sociomicrobiology, 22 September 2011. Ghent, Belgium.
5.2.
2011
Zekker, I.; Rikmann, E.; Tenno, T.; Menert, A.; Kroon, K.; Tomingas, M.; Vabamäe, P.; Tenno, T. (2011). Anaerobic ammonium oxidation process performance with optimum bicarbonate concentration. Agricultural Research. Abstract Book from the 4th Annual International Symposium on Agricultural Research 18-21 July 2011, Athens, Greece: 4th Annual International Symposium on Agriculture, 18-21 July 2011, Athens, Greece. Ed. Gregory T. Papanikos. The Athens Institute for Education and Research, 69−71.
5.2.
2011
Tomingas, M.; Zekker, I.; Rikmann, E.; Tenno, T.; Menert, A.; Kroon, K.; Tenno, T. (2011). Biological treatment of anaerobic digester supernatant by anaerobic ammonium oxidation method in UASB system. Abstract Book & Program: International Conference on Materials and Technologies for Green Chemistry, 5-9 September 2011, Talllinn, Estonia. Ed. Borissova, M., 140.
5.2.
2010
Zekker, I.; Tenno, T.; Tenno, T.; Lemmiksoo, V.; Rikmann, E.; Menert, A.; Kolberg, K. (2010). Research of specific nitrite oxidation rate on high surfaced biofilms carriers with free ammonia and temperature variations. Book of Abstracts: 3rd EuCheMS Chemistry Congress Chemistry - the Creative Force. 29 August - 2 September 2010, Nürnberg/Germany. The Gesellschaft Deutscher Chemiker (GDCh), 42.
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ETFETF9370Alternative ways of anaerobic ammonium oxidation process and the ways of its usage01.01.201231.12.2015Anne MenertUniversity of Tartu, Faculty of Science and Technology (old), Institute of Molecular and Cell Biology, University of Tartu33 984,00 EUR
MUUSLOKT11027T (3.2.0501.10-0020)Optimization of development biogas energy technologies for biochemical processes optimization and monitoring01.04.201031.08.2015Taavo TennoUniversity of Tartu116 249,00 EUR
MUUSLOKT12034TRecalcitrant substances removal from wastewater by physical and biological methods for pollution reduction01.01.201231.12.2014Taavo TennoUniversity of Tartu173 790,00 EUR
1.2.2.1.14.3.; 1.1.7.2.1MLTKT16261 (12170)Interactive Water Management in Baltic sea region01.03.201631.05.2019Taavo TennoUniversity of Tartu, Faculty of Science and Technology, Institute of Chemistry364 029,50 EUR
2.1.1.LLTKT20530Reuse of waste materials for production of composite building material01.10.202031.05.2021Toomas TennoUniversity of Tartu, Faculty of Science and Technology, Institute of Chemistry40 000,00 EUR
IUTIUT20-16Investigation of Processes in Microheterogeneous and Nanoscale Systems and Related Technological Applications01.01.201431.12.2019Kaido TammeveskiUniversity of Tartu, Faculty of Science and Technology, Institute of Chemistry1 013 400,00 EUR
MUUSLTKT15194Integrated MFC-MBR system using low-cost, multifunctional ceramic membrane for efficient wastewater treatment and electricity recovery01.01.201631.12.2018Kaido TammeveskiUniversity of Tartu, Faculty of Science and Technology, Institute of Chemistry70 000,00 EUR
1.2.3.4.MLTKT19481RIdentifying best available technologies for decentralized wastewater treatment and resource recovery for India01.08.201931.07.2023Taavo TennoUniversity of Tartu, Faculty of Science and Technology, Institute of Chemistry161 100,00 EUR
SFSF0180135s08Processes in macro- and microheterogeneous and nanoscale systems and related technological applications01.01.200831.12.2013Toomas TennoUniversity of Tartu, Faculty of Science and Technology (old), Institute of Chemistry, Tartu University726 125,25 EUR
1.1.7.2.1SLTKT20427 (17431)Sewage sludge treatment from heavy metals, emerging pollutants and recovery of metals by fungi01.08.202016.06.2022Ivar ZekkerUniversity of Tartu, Faculty of Science and Technology, Institute of Chemistry89 037,04 EUR
1.1.7.2.1SLTKT18522 (14616)Practical application of end of waste criteria for sewage sludge in Estonian water utilities01.06.201830.11.2020Taavo TennoUniversity of Tartu, Faculty of Science and Technology, Institute of Chemistry118 877,93 EUR