Results 41 to 50 of about 20,251 (159)

Study on nitrogen removal in mixotrophic denitrification system driven by composite filter materials

Gongye shui chuli
NH4+-N in refinery wastewater is completely converted into NO3--N after biochemical treatment, resulting in extremely low C/N ratio in the effluent. The traditional heterotrophic denitrification processes require external carbon sources, which leads to ...
CHENG Binbin, SONG Yanke, WANG Qinghong, SONG Haigang, CHEN Chunmao, LI Jin, LIU Zhichang   +6 more
doaj   +1 more source

Virtual Sensing of Nitrite: A Novel Control for Safe Denitrification in Recirculating Aquaculture Systems (RASs)

Fishes
Recirculating aquaculture system (RAS) technology is seen worldwide as a solution for sustainable fish production. However, there are still deficiencies in the process technology imperiling consistent operation and thus economic results.
Anneliese Ernst, Christian Steinbach, Kai Wagner, Uwe Waller   +3 more
doaj   +1 more source

Increased Denitrification Rates Associated with Shifts in Prokaryotic Community Composition Caused by Varying Hydrologic Connectivity

Frontiers in Microbiology, 2017
While modern developments in agriculture have allowed for increases in crop yields and rapid human population growth, they have also drastically altered biogeochemical cycles, including the biotransformation of nitrogen.
Abigail Tomasek, Abigail Tomasek, Christopher Staley, Ping Wang, Thomas Kaiser, Nicole Lurndahl, Jessica L. Kozarek, Miki Hondzo, Miki Hondzo, Michael J. Sadowsky, Michael J. Sadowsky   +10 more
doaj   +1 more source

The nitrogen removal characterization and ecological risk assessment of Bacillus sp. isolated from mariculture systems in China with spatiotemporal difference.

PLoS ONE
The accumulation of nitrogen compounds may worsen the aquatic environment and cause serious economic losses in the aquaculture industry. In this study, the denitrification performance and ecological safety of 120 Bacillus sp.
Qian Zhang, Yingeng Wang, Zheng Zhang, Yongxiang Yu, Chunyuan Wang, Meijie Liao, Xiaojun Rong, Zhiqi Zhang, Bin Li, Jianlong Ge, Jinjin Wang   +10 more
doaj   +1 more source

Screening and nitrogen removal characteristics of a denitrifying bacteria suitable for partial denitrification

Gongye shui chuli
A strain D5 with excellent partial denitrification performance was screened from paddy soil. The bacteria were identified as Klebsiella pneumoniae by morphological observation and 16S r DNA sequence analysis.
ZHANG Jianmei, ZHU Yongmao, XIE Jianqiang, LÜ Yu’nan, MEI Jiangxue, JIANG Xingchao   +5 more
doaj   +1 more source

Intermittent flooding of organic‐rich soil promotes the formation of denitrification hot moments and hot spots

Ecosphere, 2019
Anthropogenic activities have altered the nitrogen cycle, necessitating management on the landscape level. Isolated time periods and areas, termed hot moments and hot spots, respectively, frequently account for a large percentage of nitrate removal in ...
Abigail A. Tomasek, Miki Hondzo, Jessica L. Kozarek, Christopher Staley, Ping Wang, Nicole Lurndahl, Michael J. Sadowsky   +6 more
doaj   +1 more source

Metabolic coupling between soil aerobic methanotrophs and denitrifiers in rice paddy fields

Nature Communications
Paddy fields are hotspots of microbial denitrification, which is typically linked to the oxidation of electron donors such as methane (CH4) under anoxic and hypoxic conditions.
Kang-Hua Chen, Jiao Feng, Paul L. E. Bodelier, Ziming Yang, Qiaoyun Huang, Manuel Delgado-Baquerizo, Peng Cai, Wenfeng Tan, Yu-Rong Liu   +8 more
doaj   +1 more source

Denitrification potential of riparian sediments amended with

Journal of Ecology and Environment, 2014
Denitrification permanently removes nitrate from aquatic ecosystems, so construction of denitrification walls to enhance denitrification activity is often suggested to reduce the nitrate levels from tributary ecosystems.
Haryun Kim
doaj   +1 more source

Isolation, identification, and the denitrification characteristics for a denitrifying strain: Paracoccus huijuniae

上海师范大学学报. 自然科学版
Nitrogen(N) removal become an important topic in municipal wastewater treatment, in which denitrification seems more important step. A denitrifying strain, Paracoccus huijuniae, was isolated and was employed for accelerating denitrification by means of ...
HUANG Meng, CHEN Songyun, ZHANG Haiyun, GAO Xiaobing, ZHANG Yongming   +4 more
doaj   +1 more source

Optimization of Reaction Kinetic Model for Polymer Catalytic Reduction Denitrification

Journal of Chemistry
Polymer catalytic reduction (PCR) is a denitrification method that may exhibit higher efficiency and lower cost. However, the presence of catalysts in the PCR agent adds complexity to the denitrification reaction kinetics.
Jingyang Zhang, Ya Zhang, Yuepeng Pang, Jian Gu   +3 more
doaj   +1 more source