Results 61 to 70 of about 16,177 (209)

Advanced treatment of biochemical tail water of pig wastewater by magnetic BAF process

Gongye shui chuli
In order to realize the biochemical tail water of pig wastewater resource utilization, this study took the A2O process effluent from the sewage treatment station of a pig enterprise in Jingzhou City as the sample.
YUAN Xudong, YANG Yuhang, WANG Xiaoyuan, XU Dengchen, LIU Shuntong, DAI Jie   +5 more
doaj   +1 more source

High-Rate Nitrification Using Aerobic Granular Sludge

Water Science and Technology, 2006
The performance of nitrifying granules, which had been produced in an aerobic upflow fluidised bed (AUFB) reactor, was investigated in various types of ammonia-containing wastewaters. When pure oxygen was supplied to the AUFB reactor with a synthetic wastewater containing a high concentration of ammonia (500 g-N/m3), the ammonia removal rate reached 16.
S, Tsuneda, M, Ogiwara, Y, Ejiri, A, Hirata   +3 more
openaire   +2 more sources

Importance and measurement of decay rate when assessing nitrification kinetics

, 2005
Nitrification kinetics are important for process design, optimization and capacity rating of activated sludge wastewater treatment plants. Assessment of nitrification behaviour historically has focused on measuring the nitrifier maximum specific growth ...
C.M. Bye, P.L. Dold, R.M. Jones
core   +1 more source

Characteristics and influencing mechanisms of soil nitrous oxide (N2O) emissions from forestlands at different slope positions in karst regions

Carsologica Sinica
Greenhouse gases reflect long-wave infrared radiation from the Earth’s surface, causing the rise in global temperatures. Nitrous oxide (N2O) is one of the three major greenhouse gases, with a century-long warming potential 296 times greater than that of ...
Mingzhen YANG, Lin YANG, Lijun LIU, Dongni WEN, Jianhua CAO, Tongbin ZHU, Longfei YU, Liang LI, Jian LIANG, Danmei LU   +9 more
doaj   +1 more source

pH rather than nitrification and urease inhibitors determines the community of ammonia oxidizers in a vegetable soil

AMB Express, 2017
Nitrification inhibitors and urease inhibitors, such as nitrapyrin and N-(n-butyl) thiophosphoric triamide (NBPT), can improve the efficiencies of nitrogen fertilizers in cropland.
Ruijiao Xi, Xi-En Long, Sha Huang, Huaiying Yao   +3 more
doaj   +1 more source

A study of nitrification in lakes of the English Lake District

, 1981
This thesis was submitted for the degree of Doctor of Philosophy and was awarded by Brunel University.Nitrification became the dominant nitrogen transformation in a number of lakes which accumulated ammonium, in hypolimnetic water, under aerobic ...
Hall, Grahame
core  

Nitrificación del amonio a partir de un fertilizante de liberación controlada y úrea convencional en dos suelos de iowa, EEUU Nitrification of ammonium nitrogen from a controlled release fertilizer and conventional urea in two soils of Iowa, USA

Bioagro, 2010
El retardo en la tasa de nitrificación del amonio es un factor importante a considerar para disminuir las pérdidas de fertilizantes aplicados al suelo.
Marta Barrios, Randy Killorn, Judith García   +2 more
doaj  

Contingent Effects of Liming on N2O-Emissions Driven by Autotrophic Nitrification

Frontiers in Environmental Science, 2020
Liming acidic soils is often found to reduce their N2O emission due to lowered N2O/(N2O + N2) product ratio of denitrification. Some field experiments have shown the opposite effect, however, and the reason for this could be that liming stimulates ...
Shahid Nadeem, Lars R. Bakken, Åsa Frostegård, John C. Gaby, Peter Dörsch   +4 more
doaj   +1 more source

Nitrous oxide emissions from ephemeral wetland soils are correlated with microbial community composition

Frontiers in Microbiology, 2011
Nitrous oxide (N2O) is a greenhouse gas with a global warming potential far exceeding that of CO2. Soil N2O emissions are a product of two microbially mediated processes: nitrification and denitrification.
Wai eMa, Richard eFarrell, Steven eSiciliano   +2 more
doaj   +1 more source

The effect of urinary nitrogen loading rate and a nitrification inhibitor on nitrous oxide emissions from a temperate grassland soil

, 2014
Nitrous oxide (N₂O) emissions associated with urine nitrogen (N) deposition during grazing are a major component of greenhouse gas emissions from domestic livestock.
Di, Hong, Moir, James, Richards, KG, Selbie, DR, Cameron, Keith, Lanigan, GJ   +5 more
core   +1 more source