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You searched for: Publication year rev 7980-2020 Remove constraint Publication year rev: 7980-2020 Subject chemical oxygen demand Remove constraint Subject: chemical oxygen demand Subject term Acidobacteria Remove constraint Subject term: Acidobacteria
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1. Alkaline aided thermophiles pretreatment of waste activated sludge to increase short chain fatty acids production: Microbial community evolution by alkaline on hydrolysis and fermentation

Author:
Chun-Xue Yang; Shuai Zhao; Ze-Chong Guo; Wen-Zong Liu; Ling Wang; Shao-Peng Yu; Bao-Ling Liu; Xue Cong
Source:
Environmental research 2020 v.186 pp. 109503
ISSN:
0013-9351
Subject:
Acidobacteria; Caloramator; acidification; activated sludge; chemical oxygen demand; fermentation; heat tolerance; hydrolysis; microbial communities; proteins; proteolysis; short chain fatty acids; thermophilic bacteria
Abstract:
... Adding alkaline into an anaerobic waste activated sludge (WAS) fermentation with thermophilic bacteria pretreatment could efficiently improve short-chain fatty acids (SCFAs) accumulation to 3550 ± 120 mg COD/L. The acidification rate in combined test was 21.2%, while that was 15.6% and 10.7% in sole thermophilic bacteria pretreatment and control tests respectively. Four distinct groups of microbes ...
DOI:
10.1016/j.envres.2020.109503

2. Antibiotic resistance genes and bacterial community dynamics in the seawater environment of Dapeng Cove, South China

Author:
Wenjun Li; Haochang Su; Yucheng Cao; Linglong Wang; Xiaojuan Hu; Wujie Xu; Yu Xu; Zhuojia Li; Guoliang Wen
Source:
Science of the total environment 2020 v.723 pp. 138027
ISSN:
0048-9697
Subject:
Acidobacteria; Bacteroidetes; Chloroflexi; Cyanobacteria; Planctomycetes; Proteobacteria; anthropogenic activities; antibiotic resistance; antibiotic resistance genes; bacterial communities; cage culture; chemical oxygen demand; chloramphenicol; community structure; environmental factors; integrases; lakes; pathogens; quantitative polymerase chain reaction; rivers; seawater; sediments; sewage; total suspended solids; tourism; wastewater; China
Abstract:
... In recent years, the propagation of antibiotic resistance genes (ARGs) and increased antibiotic resistance in pathogens have gained serious attention. Numerous reports have investigated the influence of domestic sewage discharge, medical wastewater and aquaculture wastewater on rivers and lakes, while the dynamics of ARGs in seawater and the relationships between ARGs, bacterial community structur ...
DOI:
10.1016/j.scitotenv.2020.138027

3. Biological nitrogen removal and metabolic characteristics in a full-scale two-staged anoxic-oxic (A/O) system to treat optoelectronic wastewater

Author:
Xiao Huang; Jia Zhu; Weiyan Duan; Jingsi Gao; Weijin Li
Source:
Bioresource technology 2020 v.300 pp. 122595
ISSN:
0960-8524
Subject:
Acidobacteria; Bacteroidetes; Firmicutes; Proteobacteria; ammonium nitrogen; chemical oxygen demand; high-throughput nucleotide sequencing; metabolism; microbial communities; monitoring; nitrogen; organic matter; pollutants; sewage; wastewater
Abstract:
... In order to explore the treatment efficiency of optoelectronic wastewater and pollutant degradation mechanism of full-scale two-stage AO process, 160 d monitoring was conducted in this study. The results showed that the two-stage AO process owned relatively stable nitrogen and organic matter removal performance. The average concentration of COD, NH₄⁺-N, and TN in effluent was 54, 3.78 and 13.77 mg ...
DOI:
10.1016/j.biortech.2019.122595