Effects of hydraulic retention time on nitrous oxide production rates during nitrification in a laboratory-scale biological aerated filter reactor

2021 ◽  
Vol 21 ◽  
pp. 101342
Author(s):  
Chenhui Yu ◽  
Qianqian Tu ◽  
Xiaoliu Huangfu ◽  
Yinying Zhu ◽  
Leilei Fan ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Retention Time ◽  
Hydraulic Retention Time ◽  
Laboratory Scale ◽  
Biological Aerated Filter ◽  
Production Rates ◽  
Oxide Production ◽  
Nitrous Oxide Production ◽  
Aerated Filter

scholarly journals Effects of dissolved oxygen and pH on nitrous oxide production rates in autotrophic partial nitrification granules

2015 ◽  
Vol 197 ◽  
pp. 15-22 ◽  
Author(s):  
Rathnayake M.L.D. Rathnayake ◽  
Mamoru Oshiki ◽  
Satoshi Ishii ◽  
Takahiro Segawa ◽  
Hisashi Satoh ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Dissolved Oxygen ◽  
Partial Nitrification ◽  
Production Rates ◽  
Oxide Production ◽  
Nitrous Oxide Production

Effects of C/N ratio on nitrous oxide production from nitrification in a laboratory-scale biological aerated filter reactor

2016 ◽  
Vol 75 (6) ◽  
pp. 1270-1280 ◽  
Author(s):  
Qiang He ◽  
Yinying Zhu ◽  
Leilei Fan ◽  
Hainan Ai ◽  
Xiaoliu Huangfu ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Wastewater Treatment ◽  
Dna Analysis ◽  
Denaturing Gradient Gel Electrophoresis ◽  
N2o Emission ◽  
Laboratory Scale ◽  
Critical Parameters ◽  
Biological Aerated Filter ◽  
N2o Production ◽  
Aerated Filter

Emission of nitrous oxide (N2O) during biological wastewater treatment is of growing concern. This paper reports findings of the effects of carbon/nitrogen (C/N) ratio on N2O production rates in a laboratory-scale biological aerated filter (BAF) reactor, focusing on the biofilm during nitrification. Polymerase chain reaction–denaturing gradient gel electrophoresis (PCR-DGGE) and microelectrode technology were utilized to evaluate the mechanisms associated with N2O production during wastewater treatment using BAF. Results indicated that the ability of N2O emission in biofilm at C/N ratio of 2 was much stronger than at C/N ratios of 5 and 8. PCR-DGGE analysis showed that the microbial community structures differed completely after the acclimatization at tested C/N ratios (i.e., 2, 5, and 8). Measurements of critical parameters including dissolved oxygen, oxidation reduction potential, NH4+-N, NO3−-N, and NO2−-N also demonstrated that the internal micro-environment of the biofilm benefit N2O production. DNA analysis showed that Proteobacteria comprised the majority of the bacteria, which might mainly result in N2O emission. Based on these results, C/N ratio is one of the parameters that play an important role in the N2O emission from the BAF reactors during nitrification.

scholarly journals Low nitrous oxide production through nitrifier-denitrification in intermittent-feed high-rate nitritation reactors

2017 ◽  
Vol 123 ◽  
pp. 429-438 ◽  
Author(s):  
Qingxian Su ◽  
Chun Ma ◽  
Carlos Domingo-Félez ◽  
Anne Sofie Kiil ◽  
Bo Thamdrup ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
High Rate ◽  
Oxide Production ◽  
Nitrifier Denitrification ◽  
Nitrous Oxide Production

scholarly journals Effects of silver nanoparticles on nitrification and associated nitrous oxide production in aquatic environments

2017 ◽  
Vol 3 (8) ◽  
pp. e1603229 ◽  
Author(s):  
Yanling Zheng ◽  
Lijun Hou ◽  
Min Liu ◽  
Silvia E. Newell ◽  
Guoyu Yin ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Nitrous Oxide ◽  
Aquatic Environments ◽  
Oxide Production ◽  
Nitrous Oxide Production

Denitrification and nitrous oxide production in a coastal marine ecosystem1

1984 ◽  
Vol 29 (1) ◽  
pp. 73-83 ◽  
Author(s):  
Sybil P. Seitzinger ◽  
Scott W. Nixon ◽  
Michael E. Q. Pilson
Keyword(s):  
Nitrous Oxide ◽  
Oxide Production ◽  
Coastal Marine ◽  
Nitrous Oxide Production
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