scholarly journals Dissimilatory nitrate reduction processes between the sediment-water interface in three typical wetlands of middle and lower reaches of Yangtze River

2016 ◽  
Vol 28 (6) ◽  
pp. 1283-1292 ◽  
Author(s):  
JIANG Xingyu ◽  
◽  
YAO Xiaolong ◽  
XU Huixian ◽  
ZHANG Lu
Keyword(s):  
Nitrate Reduction ◽  
Yangtze River ◽  
Water Interface ◽  
Reduction Processes ◽  
Dissimilatory Nitrate Reduction

Variations of dissimilatory nitrate reduction processes along reclamation chronosequences in Chongming Island, China

2021 ◽  
Vol 206 ◽  
pp. 104815
Author(s):  
Yinghui Jiang ◽  
Guoyu Yin ◽  
Lijun Hou ◽  
Min Liu ◽  
Dengzhou Gao ◽  
...  
Keyword(s):  
Nitrate Reduction ◽  
Chongming Island ◽  
Reduction Processes ◽  
Dissimilatory Nitrate Reduction

The synergetic and competitive mechanism and its dominant affecting factors of dissimilatory nitrate reduction processes: a review

2016 ◽  
Vol 36 (5) ◽  
Author(s):  
杨杉 YANG Shan ◽  
吴胜军 WU Shengjun ◽  
蔡延江 CAI Yanjiang ◽  
周文佐 ZHOU Wenzuo ◽  
朱同彬 ZHU Tongbin ◽  
...  
Keyword(s):  
Nitrate Reduction ◽  
Affecting Factors ◽  
Reduction Processes ◽  
Dissimilatory Nitrate Reduction ◽  
Competitive Mechanism

scholarly journals Effects of Sulfamethoxazole and 2-Ethylhexyl-4-Methoxycinnamate on the Dissimilatory Nitrate Reduction Processes and N2O Release in Sediments in the Yarlung Zangbo River

2020 ◽  
Vol 17 (6) ◽  
pp. 1822 ◽  
Author(s):  
Huiping Xu ◽  
Guanghua Lu ◽  
Chenwang Xue
Keyword(s):  
High Altitude ◽  
Nitrate Reduction ◽  
River Sediments ◽  
Nitrogen Transformation ◽  
Emerging Pollutants ◽  
15N Tracer ◽  
Ammonium Oxidation ◽  
Reduction Processes ◽  
Dissimilatory Nitrate Reduction ◽  
Yarlung Zangbo River

The nitrogen pollution of rivers as a global environmental problem has received great attentions in recent years. The occurrence of emerging pollutants in high-altitude rivers will inevitably affect the dissimilatory nitrate reduction processes. In this study, sediment slurry experiments combined with 15N tracer techniques were conducted to investigate the influence of pharmaceutical and personal care products (alone and in combination) on denitrification and the anaerobic ammonium oxidation (anammox) process and the resulting N2O release in the sediments of the Yarlung Zangbo River. The results showed that the denitrification rates were inhibited by sulfamethoxazole (SMX) treatments (1–100 μg L−1) and the anammox rates decreased as the SMX concentrations increased, which may be due to the inhibitory effect of this antibiotic on nitrate reducing microbes. 2-Ethylhexyl-4-methoxycinnamate (EHMC) impacted nitrogen transformation mainly though the inhibition of the anammox processes. SMX and EHMC showed a superposition effect on the denitrification processes. The expression levels of the denitrifying functional genes nirS and nosZ were decreased and N2O release was stimulated due to the presence of SMX and/or EHMC in the sediments. To the best of our knowledge, this study is the first to report the effects of EHMC and its mixtures on the dissimilatory nitrate reduction processes and N2O releases in river sediments. Our results indicated that the widespread occurrence of emerging pollutants in high-altitude rivers may disturb the nitrogen transformation processes and increase the pressure of global warming.

Tetracycline and sulfamethazine alter dissimilatory nitrate reduction processes and increase N2O release in rice fields

2018 ◽  
Vol 242 ◽  
pp. 788-796 ◽  
Author(s):  
Jun Shan ◽  
Pinpin Yang ◽  
M. Mizanur Rahman ◽  
Xiaoxia Shang ◽  
Xiaoyuan Yan
Keyword(s):  
Nitrate Reduction ◽  
Rice Fields ◽  
Reduction Processes ◽  
Dissimilatory Nitrate Reduction

Factors controlling dissimilatory nitrate reduction processes in constructed stormwater urban wetlands

2019 ◽  
Vol 142 (3) ◽  
pp. 375-393 ◽  
Author(s):  
Md. Moklesur Rahman ◽  
Keryn L. Roberts ◽  
Fiona Warry ◽  
Michael R. Grace ◽  
Perran L. M. Cook
Keyword(s):  
Nitrate Reduction ◽  
Urban Wetlands ◽  
Reduction Processes ◽  
Dissimilatory Nitrate Reduction

Dissimilatory nitrate reduction processes and corresponding nitrogen loss in tidal flow constructed wetlands

2021 ◽  
Vol 295 ◽  
pp. 126429 ◽  
Author(s):  
Manping Zhang ◽  
Jung-Chen Huang ◽  
Shanshan Sun ◽  
Muhammad Muneeb Ur Rehman ◽  
Shengbing He ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Nitrate Reduction ◽  
Nitrogen Loss ◽  
Tidal Flow ◽  
Reduction Processes ◽  
Dissimilatory Nitrate Reduction
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