Performance and microbial communities in a combined bioelectrochemical and sulfur autotrophic denitrification system at low temperature

被引：106
作者：
Chen, Dan [1 ,2 ]
Wang, Hongyu [1 ,2 ]
Yang, Kai [2 ]
Ma, Fang [1 ]
机构：
[1] Harbin Inst Technol, State Key Lab Urban Water Resources & Environm, Harbin 150090, Heilongjiang, Peoples R China
[2] Wuhan Univ, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China
来源：
CHEMOSPHERE | 2018年 / 193卷
关键词：
Combined bioelectrochemical and sulfur; autotrophic denitrification; Low temperature; Nitrate removal; Community; Genus; BIOFILM-ELECTRODE REACTOR; NITRATE-CONTAMINATED GROUNDWATER; SOLID-PHASE DENITRIFICATION; WASTE-WATER TREATMENT; AUTOHYDROGENOTROPHIC BACTERIA; REMOVAL;
D O I：
10.1016/j.chemosphere.2017.11.017
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Combined bioelectrochemical and sulfur autotrophic denitrification (CBSAD) system had proven to be feasible for nitrate removal at low temperature. This system obtained excellent denitrification efficiency 96.55% at 10 +/- 2 degrees C long term operation. Nitrate removal efficiency presented increased tendency with applied current increased from 50 to 200 mA and then decreased when the applied current was further increased to 300 mA. The CBSAD system owned the most abundant and rich communities at current 200 mA, and the community structures of the microbial samples at different current conditions were clearly different from each other. Phyla Eirmicutes, Proteobacteria and classes Epsilonproteobacteria, Gammaproteobacteria, Betaproteobacteria, Clostridia dominated in all the communities in the system. The largest genus at current 50 mA was Arcobacter, whereas Pseudomonas was the most dominant genus at current 100-300 mA condition, suggesting that high current changed the bacterial structure in this CBSAD reactor. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：337 / 342
页数：6
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