Results 51 to 60 of about 16,177 (209)
Critical analysis of decay rate measurement methodology [PDF]
E3S Web of Conferences, 2019 In modeling studies, estimation of microorganisms kinetic parameters set is a key element for proper model operation and predictability. Nitrification process is very often, a crucial element of the wastewater treatment systems as bacteria responsible ...
Kokurewicz Łukasz +3 more
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Apparent and Measured Rates of Nitrification in the Hypolimnion of a Mesotrophic Lake [PDF]
Applied and Environmental Microbiology, 1982 Three distinct phases were observed in the change of dissolved inorganic nitrogen concentrations in the hypolimnion of Grasmere. The second phase of decreasing ammonia and increasing nitrate concentrations was typical of the nitrification process.
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Heterotrophic nitrification of organic nitrogen is stimulated by agricultural plants
Communications Earth & EnvironmentThe association between soil heterotrophic nitrification and plant nitrogen (N) uptake remains poorly understood. Here, we used 15N isotope tracing and numerical analysis to quantify the rate of ammonification (organic N to ammonium), heterotrophic ...
Shending Chen +8 more
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AMB Express, 2017 Soil amended with single biochar or nitrogen (N) fertilizer has frequently been reported to alter soil nitrification process due to its impact on soil properties.
Qing-Fang Bi +9 more
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Rates and controls of nitrification in a large oligotrophic lake [PDF]
Limnology and Oceanography, 2012 Recent discoveries have altered prevailing paradigms concerning the conditions under which nitrification takes place and the organisms responsible for nitrification in aquatic ecosystems. In Lake Superior, nitrate () concentrations have increased fivefold in the past century. Although previous evidence indicated that most is generated by nitrification
Gaston E. Small +7 more
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Performance of three kinds of nitrification sludge
工程科学与技术, 2009 :Batch experiments were carried out to study the performances of three kinds of nitrification sludge of seeding sludge (S1) and nitrification sludge (S2 and S3) taken from a bioreactor run with inorganic or organic ammonia containing wastewater for a ...
Hu An-Hui, Zheng Ping, Hu Bao-Lan
doaj
, 2023 The fluctuation of dissolved oxygen is one of the primary cause of disruptions to the consistent operation of partial nitrification, and the level of dissolved oxygen is mainly controlled by the aeration rate.
Shuai Tian +13 more
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Temporal variation in maximum cell-specific nitrification rate
Water Science and Technology, 2010 The cell numbers of ammonia-oxidising bacteria (AOBs), Nitrospira and Nitrobacter in activated sludge used to treat wastewater from a thermal power plant in Japan were examined for nine months using a real-time PCR quantification technique. AOB cell numbers ranged 2.8 × 1010–2.3 × 1011 cell/L.
M, Fujita, K, Tsuji, A, Akashi
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Dicyandiamide as nitrification inhibitor of pig slurry ammonium nitrogen in soil
Ciência Rural, 2016 : Inhibition of nitrification of ammoniacal nitrogen pig slurry after its application to the soil can mitigate nitrogen (N) losses by nitrate (NO3 -) denitrification and leaching, with economical and environmental benefits.
Rogério Gonzatto +7 more
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The effect of high solute concentrations on nitrification rates in soil
Plant and Soil, 1987 A short term nitrification assay ( ammonium sulphate>sorbitol up to the maximum osmotic pressure studied (25 atm). With ammonium chloride, a pressure of 3.5 atm. was sufficient to cause a 90% inhibition of nitrification rate. The inhibition produced by mixtures of ammonium chloride and sorbitol, each mixture generating an osmotic pressure of 5 atm.
Darrah, P, Nye, P, White, R
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