Results 211 to 220 of about 15,654 (238)
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2011
Abstract Over the past 15 years, the use of modern molecular biological approaches has radically advanced our understanding of nitrification processes. With chapters contributed by leading experts in the field, Nitrification fully reviews all the latest research findings on microbes involved in conventional aerobic nitrification ...
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Abstract Over the past 15 years, the use of modern molecular biological approaches has radically advanced our understanding of nitrification processes. With chapters contributed by leading experts in the field, Nitrification fully reviews all the latest research findings on microbes involved in conventional aerobic nitrification ...
+7 more sources
Archaeal nitrification without oxygen
Science, 2022The single-cell organism can self-produce oxygen for ammonia ...
Willm, Martens-Habbena, Wei, Qin
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Plant influence on nitrification
Biochemical Society Transactions, 2011Modern agriculture has promoted the development of high-nitrification systems that are susceptible to major losses of nitrogen through leaching of nitrate and gaseous emissions of nitrogen oxide (NO and N2O), contributing to global warming and depletion of the ozone layer.
Marcin W, Skiba +3 more
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Nature, 1950
IN the reported discussion of the “Nitrogen Cycle in Nature” at the Newcastle meeting of the British Association, reference was made to Prof. J. H. Quastel's observation that “all the amino-acids studied nitrify readily with the striking exception of methionine”. The report does not mention cystine in this connexion.
O, OWENS, G W, WINSOR
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IN the reported discussion of the “Nitrogen Cycle in Nature” at the Newcastle meeting of the British Association, reference was made to Prof. J. H. Quastel's observation that “all the amino-acids studied nitrify readily with the striking exception of methionine”. The report does not mention cystine in this connexion.
O, OWENS, G W, WINSOR
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Archiv f�r Mikrobiologie, 1960
1. Nitrifying fungi were isolated from soil and were found to belong to the genera Aspergillus and Penicillium. 2. While the Aspergillus-isolates produced both nitrite and nitrate, the penicillia were observed to produce only nitrate from nitrite.
T S, HORA, M R, IYENGAR
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1. Nitrifying fungi were isolated from soil and were found to belong to the genera Aspergillus and Penicillium. 2. While the Aspergillus-isolates produced both nitrite and nitrate, the penicillia were observed to produce only nitrate from nitrite.
T S, HORA, M R, IYENGAR
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Canadian Journal of Microbiology, 1990
Complete oxidation of ammonia nitrogen (~1000 mg/L) to nitrite was observed in stabilized swine waste after 49 days in incubation at 400 rpm and 29 °C, only if 10% (v/v) activated sludge from a wastewater treatment unit and 1.5% (w/v) CaCO3, were added.
M, Blouin +3 more
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Complete oxidation of ammonia nitrogen (~1000 mg/L) to nitrite was observed in stabilized swine waste after 49 days in incubation at 400 rpm and 29 °C, only if 10% (v/v) activated sludge from a wastewater treatment unit and 1.5% (w/v) CaCO3, were added.
M, Blouin +3 more
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Nitrification in Paleocene Shale
Science, 1974Exchangeable ammonium nitrogen is present in Paleocene (Fort Union) shale below a depth of 10 meters in North Dakota and eastern Montana. Above 10 meters, exchangeable ammonium nitrogen is nitrified in situ. The lack of viable nitrifying organisms and the probable lack of oxygen prevent in situ nitrification below 10 meters.
J F, Power +3 more
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Kinetics of biofilm nitrification
Biotechnology and Bioengineering, 1982AbstractThe reaction rates (r and r) in the two‐step nitrification reaction were measured in a fluidized‐sand‐bed biofilm reactor under a range of steady‐state conditions with respect to bulk NH, NO, and O2 concentrations. It was shown from theory and experiment that under low NH concentration conditions, if the O2/NH concentration ratio in the bulk ...
H, Tanaka, I J, Dunn
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Enrichment of high activity nitrifers to enhance partial nitrification process
Bioresource Technology, 2010Partial nitrification (PN) process is an essential pre-treatment to Anammox process for nitrogen removal from ammonium-rich wastewaters. High activity nitrifiers (HANs) are considered as the key to high-rate PN process. The HANs could be successfully enriched at free ammonia (FA) concentrations of 10-20 mg NH(3)-NL(-1), which differed significantly ...
Jianwei, Chen +4 more
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