Efficient electrochemically active biofilm denitrification and bacteria consortium analysis

被引：16

作者：

Cong, Yanqing ^{[1
,2
]}

Xu, Qian ^{[1
]}

Feng, Huajun ^{[1
,2
]}

Shen, Dongsheng ^{[1
,2
]}

机构：

[1] Zhejiang Gongshang Univ, Coll Environm Sci & Engn, Hangzhou 310012, Zhejiang, Peoples R China

[2] Zhejiang Gongshang Univ, Zhejiang Prov Key Lab Solid Waste Treatment & Rec, Hangzhou 310018, Zhejiang, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 132卷

基金：

美国国家科学基金会;

关键词：

Denitrification; Direct electron transfer; Hydrogen transfer; Multispecies biofilm; Bacteria consortium; NITRATE REMOVAL; GROUNDWATER; COMMUNITY; EXCHANGE; WATER;

D O I：

10.1016/j.biortech.2013.01.004

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The electrochemically active biofilms have been successfully developed for nitrate removal from the wastewater. The electrochemically "selected" bacteria showed higher activity than the control bacteria. Electron exchange occurred between the electrochemically active bacteria and cathode was identified. Direct electron transfer between the "selected" bacteria and cathodes may be involved in efficient denitrification besides hydrogen transfer, and would contribute to improve denitrification efficiency. The gene analysis of 16S rDNA demonstrated that there was a pronounced enrichment in bacteria of the beta-Proteobacteria with 41.93%, Uncultured bacterium clone Dok04 with 25.11% and Sphingobacteria with 6.36% of the sequences from the bacteria consortium with current acclimation. The engineering-oriented multispecies bacteria were favorable to form conductive biofilms and showed high potential for nitrate treatment. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：24 / 27

页数：4

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