Search Results - "Rikmann, Ergo"

Mainstream-sidestream wastewater switching promotes anammox nitrogen removal rate in organic-rich, low-temperature streams by Zekker, Ivar, Raudkivi, Markus, Artemchuk, Oleg, Rikmann, Ergo, Priks, Hans, Jaagura, Madis, Tenno, Taavo

“…The main issues with mainstream anammox application are loss of bacterial activity by low temperatures and by a high organic content of wastewater. We…”
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ANAMMOX-denitrification biomass in microbial fuel cell to enhance the electricity generation and nitrogen removal efficiency by Zekker, Ivar, Bhowmick, Gourav Dhar, Priks, Hans, Nath, Dibyojyoty, Rikmann, Ergo, Jaagura, Madis, Tenno, Taavo, Tämm, Kaido, Ghangrekar, Makarand Madhao

“…The inoculum biomass was collected from a pilot-scale (3 m 3 process tank) nitritation-anaerobic ammonium oxidation (ANAMMOX) (deammonification moving bed…”
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Nitrite inhibition and limitation - the effect of nitrite spiking on anammox biofilm, suspended and granular biomass by Raudkivi, Markus, Zekker, Ivar, Rikmann, Ergo, Vabamäe, Priit, Kroon, Kristel, Tenno, Taavo

“…Anaerobic ammonium oxidation (anammox) has been studied extensively while no widely accepted optimum values for nitrite (both a substance and inhibitor) has…”
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Start-Up of Anammox SBR from Non-Specific Inoculum and Process Acceleration Methods by Hydrazine by Zekker, Ivar, Artemchuk, Oleg, Rikmann, Ergo, Ohimai, Kelvin, Dhar Bhowmick, Gourav, Madhao Ghangrekar, Makarand, Burlakovs, Juris, Tenno, Taavo

“…Biological nutrient removal from wastewater to reach acceptable levels is needed to protect water resources and avoid eutrophication. The start-up of an…”
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Recycling of Low-Quality Carbon Black Produced by Tire Pyrolysis by Rikmann, Ergo, Mäeorg, Uno, Liiv, Jüri

“…Pyrolysis is a promising way to reuse of waste tires. However, the carbon black generated in the process is often contaminated with various pyrolysis products…”
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The influence of lower temperature, influent fluctuations and long retention time on the performance of an upflow mode laboratory-scale septic tank by Daija, Laura, Selberg, Aare, Rikmann, Ergo, Zekker, Ivar, Tenno, Taavo, Tenno, Toomas

“…The influence of temperature in a range of 15–5°C, fluctuations in soluble chemical oxygen demand (sCOD) and suspended solids (SS) of the influent and also…”
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Ecological Wood Protection System against Fire, Fungi and Insect Damage Using Humic Acids and Fly Ash by Liiv, Jüri, Rikmann, Ergo, Shanskiy, Merrit, Teppand, Tõnis

“…Traditional wood protection methods involving fire retardants and preservative paints have limitations, requiring periodic renewal during a building’s…”
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Low-temperature and Low-pressure HydroThermal Liquefaction (L-HTL) of biomass using ultrasonic cavitation to achieve a local supercritical state in water by Liiv, Jüri, Mäeorg, Uno, Vaino, Neeme, Rikmann, Ergo

“…HydroThermal Liquefaction (HTL) is a process that involves the reaction of polymer compounds such as cellulose, lignin, synthetic plastics, etc. with…”
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Comparison of sulfate-reducing and conventional Anammox upflow anaerobic sludge blanket reactors by RIKMANN, Ergo, ZEKKER, Ivar, TENNO, Toomas, TOMINGAS, Martin, VABAMAE, Priit, KROON, Kristel, SALUSTE, Alar, TENNO, Taavo, MENERT, Anne, LOORITS, Liis, RUBIN, Sergio S. C. dC

“…Autotrophic NH4(+) removal has been extensively researched, but few studies have investigated alternative electron acceptors (for example, SO4(2-)) in NH4(+)…”
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Stabilization of Road Embankments on Peat Soils Using Oil Shale Ash and Pozzolanic Additives by Pallav, Vello, Teppand, Tõnis, Leinpuu, Andrus, Shanskiy, Merrit, Mets, Mait, Mändar, Hugo, Rikmann, Ergo, Liiv, Jüri

“…Using kukersite oil shale ash for the stabilization of organic-rich soils has been extensively studied but without much success. The main reason for this is…”
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Modelling the solubility of sparingly soluble compounds depending on their particles size by Tenno, Toomas, Rikmann, Ergo, Zekker, Ivar, Tenno, Taavo

“…The aim of the current study was to investigate and model particle size dependence of the dissolution process of Ca[(OH).sub.2], CaC[O.sub.3], and oil shale…”
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Nitric oxide for anammox recovery in a nitrite-inhibited deammonification system by Zekker, Ivar, Rikmann, Ergo, Tenno, Toomas, Loorits, Liis, Kroon, Kristel, Fritze, Hannu, Tuomivirta, Tero, Vabamäe, Priit, Raudkivi, Markus, Mandel, Anni, DC. Rubin, Sergio S.C, Tenno, Taavo

“…The anaerobic ammonium oxidation (anammox) process is widely used for N-rich wastewater treatment. In the current research the deammonification reactor in a…”
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Sulfate-reducing anaerobic ammonium oxidation as a potential treatment method for high nitrogen-content wastewater by Rikmann, Ergo, Zekker, Ivar, Tomingas, Martin, Tenno, Taavo, Menert, Anne, Loorits, Liis, Tenno, Toomas

“…After sulfate-reducing ammonium oxidation (SRAO) was first assumed in 2001, several works have been published describing this process in laboratory-scale…”
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Anammox enrichment from reject water on blank biofilm carriers and carriers containing nitrifying biomass: operation of two moving bed biofilm reactors (MBBR) by Zekker, Ivar, Rikmann, Ergo, Tenno, Toomas, Lemmiksoo, Vallo, Menert, Anne, Loorits, Liis, Vabamäe, Priit, Tomingas, Martin, Tenno, Taavo

“…The anammox bacteria were enriched from reject water of anaerobic digestion of municipal wastewater sludge onto moving bed biofilm reactor (MBBR) system…”
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Relationship between Phase Composition and Mechanical Properties of Peat Soils Stabilized Using Oil Shale Ash and Pozzolanic Additive by Rikmann, Ergo, Zekker, Ivar, Teppand, Tõnis, Pallav, Vello, Shanskiy, Merrit, Mäeorg, Uno, Tenno, Toomas, Burlakovs, Juris, Liiv, Jüri

“…Construction of road embankments in peatlands commonly involves replacement of the peat with a fill-up soil of an adequate load-bearing capacity. This usually…”
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Detection and dissolution of sparingly soluble SrS and CaS particles in aqueous media depending on their size distribution by Uiga, Kalev, Rikmann, Ergo, Zekker, Ivar, Tenno, Toomas

“…The aim of the current study is to investigate the dissolution process of alkaline-earth metal sulfides SrS and CaS in ultrapure MilliQ water and define the…”
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Modelling and experimental measurement of the closed equilibrium system of H2O–SrS by Uiga, K, Rikmann, E, Zekker, I, Mashirin, A, Tenno, T

“…This study investigates the H2OâSrS (strontium sulphide) equilibrium system at [SrS] between 0.125 and 88.064 mM (mmol·Lâ1) in a closed oxygen-free test…”
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Modification of nitrifying biofilm into nitritating one by combination of increased free ammonia concentrations, lowered HRT and dissolved oxygen concentration by Zekker, Ivar, Rikmann, Ergo, Tenno, Toomas, Menert, Anne, Lemmiksoo, Vallo, Saluste, Alar, Tenno, Taavo, Tomingas, Martin

“…Nitrifying biomass on ring-shaped carriers was modified to nitritating one in a relatively short period of time （37 days） by limiting the air supply, changing…”
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Ameliorating effect of nitrate on nitrite inhibition for denitrifying P-accumulating organisms by Zekker, Ivar, Mandel, Anni, Rikmann, Ergo, Jaagura, Madis, Salmar, Siim, Ghangrekar, Makarand Madhao, Tenno, Taavo

“…Lowered air supply and organic carbon need are the key factors to reduce wastewater treatment costs and thereby, avoid eutrophication. Denitrifying PO43−-…”
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Modeling Closed Equilibrium Systems of H2O–Dissolved CO2–Solid CaCO3 by Tenno, Toomas, Uiga, Kalev, Mashirin, Alexsey, Zekker, Ivar, Rikmann, Ergo

“…In many places in the world, including North Estonia, the bedrock is limestone, which consists mainly of CaCO3. Equilibrium processes in water involving…”
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