| Inoculum-free start-up of biofilm- and sludge-based deammonification systems in pilot scale E Rikmann, I Zekker, T Tenno, A Saluste, T Tenno International journal of environmental science and technology 15, 133-148, 2018 | 108 | 2018 |
| Mainstream-sidestream wastewater switching promotes anammox nitrogen removal rate in organic-rich, low-temperature streams I Zekker, M Raudkivi, O Artemchuk, E Rikmann, H Priks, M Jaagura, ... Environmental technology 42 (19), 3073-3082, 2021 | 101 | 2021 |
| The influence of lower temperature, influent fluctuations and long retention time on the performance of an upflow mode laboratory-scale septic tank L Daija, A Selberg, E Rikmann, I Zekker, T Tenno, T Tenno Desalination and Water Treatment 57 (40), 18679-18687, 2016 | 86 | 2016 |
| Enhanced efficiency of nitritating-anammox sequencing batch reactor achieved at low decrease rates of oxidation–reduction potential I Zekker, A Kivirüüt, E Rikmann, A Mandel, M Jaagura, T Tenno, ... Environmental Engineering Science 36 (3), 350-360, 2019 | 83 | 2019 |
| Comparison of sulfate-reducing and conventional Anammox upflow anaerobic sludge blanket reactors E Rikmann, I Zekker, M Tomingas, P Vabamäe, K Kroon, A Saluste, ... Journal of bioscience and bioengineering 118 (4), 426-433, 2014 | 78 | 2014 |
| Step-wise temperature decreasing cultivates a biofilm with high nitrogen removal rates at 9 C in short-term anammox biofilm tests I Zekker, E Rikmann, A Mandel, K Kroon, A Seiman, J Mihkelson, T Tenno, ... Environmental technology 37 (15), 1933-1946, 2016 | 74 | 2016 |
| Nitritating-anammox biomass tolerant to high dissolved oxygen concentration and C/N ratio in treatment of yeast factory wastewater I Zekker, E Rikmann, T Tenno, A Seiman, L Loorits, K Kroon, M Tomingas, ... Environmental technology 35 (12), 1565-1576, 2014 | 72 | 2014 |
| Sulfate-reducing anaerobic ammonium oxidation as a potential treatment method for high nitrogen-content wastewater E Rikmann, I Zekker, M Tomingas, T Tenno, A Menert, L Loorits, T Tenno Biodegradation 23, 509-524, 2012 | 71 | 2012 |
| Start-Up of Anammox SBR from Non-Specific Inoculum and Process Acceleration Methods by Hydrazine I Zekker, O Artemchuk, E Rikmann, K Ohimai, G Dhar Bhowmick, ... Water 13 (3), 350, 2021 | 70 | 2021 |
| ANAMMOX-denitrification biomass in microbial fuel cell to enhance the electricity generation and nitrogen removal efficiency I Zekker, GD Bhowmick, H Priks, D Nath, E Rikmann, M Jaagura, T Tenno, ... Biodegradation 31, 249-264, 2020 | 70 | 2020 |
| Modification of nitrifying biofilm into nitritating one by combination of increased free ammonia concentrations, lowered HRT and dissolved oxygen concentration I Zekker, E Rikmann, T Tenno, A Menert, V Lemmiksoo, A Saluste, ... Journal of Environmental Sciences 23 (7), 1113-1121, 2011 | 67 | 2011 |
| Anammox enrichment from reject water on blank biofilm carriers and carriers containing nitrifying biomass: operation of two moving bed biofilm reactors (MBBR) I Zekker, E Rikmann, T Tenno, V Lemmiksoo, A Menert, L Loorits, ... Biodegradation 23, 547-560, 2012 | 66 | 2012 |
| Sulfate-reducing anammox for sulfate and nitrogen containing wastewaters E Rikmann, I Zekker, M Tomingas, T Tenno, L Loorits, P Vabamäe, ... Desalination and Water Treatment 57 (7), 3132-3141, 2016 | 63 | 2016 |
| Nitrite inhibition and limitation–the effect of nitrite spiking on anammox biofilm, suspended and granular biomass M Raudkivi, I Zekker, E Rikmann, P Vabamäe, K Kroon, T Tenno Water Science and Technology 75 (2), 313-321, 2017 | 61 | 2017 |
| Accelerating effect of hydroxylamine and hydrazine on nitrogen removal rate in moving bed biofilm reactor I Zekker, K Kroon, E Rikmann, T Tenno, M Tomingas, P Vabamäe, ... Biodegradation 23, 739-749, 2012 | 60 | 2012 |
| Ameliorating effect of nitrate on nitrite inhibition for denitrifying P-accumulating organisms I Zekker, A Mandel, E Rikmann, M Jaagura, S Salmar, MM Ghangrekar, ... Science of The Total Environment 797, 149133, 2021 | 58 | 2021 |
| Anammox bacteria enrichment and phylogenic analysis in moving bed biofilm reactors I Zekker, E Rikmann, T Tenno, P Vabamäe, M Tomingas, A Menert, ... Environmental Engineering Science 29 (10), 946-950, 2012 | 58 | 2012 |
| Achieving nitritation and anammox enrichment in a single moving-bed biofilm reactor treating reject water I Zekker, E Rikmann, T Tenno, A Saluste, M Tomingas, A Menert, L Loorits, ... Environmental technology 33 (6), 703-710, 2012 | 57 | 2012 |
| Ameliorating nitrite inhibition in a low-temperature nitritation–anammox MBBR using bacterial intermediate nitric oxide I Zekker, E Rikmann, K Kroon, A Mandel, J Mihkelson, T Tenno, T Tenno International journal of environmental science and technology 14, 2343-2356, 2017 | 56 | 2017 |
| Effect of concentration on anammox nitrogen removal rate in a moving bed biofilm reactor I Zekker, E Rikmann, T Tenno, P Vabamäe, K Kroon, L Loorits, A Saluste, ... Environmental technology 33 (20), 2263-2271, 2012 | 55 | 2012 |
