The effect of C/N ratio on nitrogen removal in a bioelectrochemical system

被引：51

作者：

Huang, Baocheng ^{[1
,2
]}

Feng, Huajun ^{[1
,2
]}

Wang, Meizhen ^{[1
,2
]}

Li, Na ^{[1
,2
]}

Cong, Yanqing ^{[1
]}

Shen, Dongsheng ^{[1
,2
]}

机构：

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

[2] Zhejiang Prov Key Lab Solid Waste Treatment & Rec, Hangzhou 310012, Zhejiang, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 132卷

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Bioelectrochemical system; Denitrification; Soluble microbial products; C/N ratio; SOLUBLE MICROBIAL PRODUCTS; BIOLOGICAL DENITRIFICATION; ELECTRON-TRANSFER; NITRATE REMOVAL; FUEL-CELLS; GROUNDWATER; ELECTRICITY; SMP; GENERATION; WASTES;

D O I：

10.1016/j.biortech.2012.12.192

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The effect of C/N ratios of 2, 2.7, and 3.5 on nitrogen removal in a bioelectrochemical system (BES) was investigated. Starch was used as a carbon source for the electrogenesis phenomenon we observed in a previous study. The results showed that an increased C/N ratio helped the BES to remove nitrate and depress nitrite accumulation but did not increase autotrophic denitrification. Nitrate and total nitrogen removal were increased from 0.69 +/- 0.02 g m(-3) h(-1) to 1.09 +/- 0.16 g m(-3) h(-1), and from 0.52 +/- 0.08 g m(-3) h(-1) to 0.97 +/- 0.06 g m(-3) h(-1), respectively, when the C/N ratio was increased from 2.0 to 3.5. However, the autotrophic denitrification ratio decreased from 72.74% to 50.23% with the same increase in the C/N ratio. High C/N ratios postponed the excretion of soluble microbial products and increased electrogenesis, but did not improve the anode transformation efficiency. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：91 / 98

页数：8

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