Removal of organic carbon and nitrogen in a membraneless flow-through microbial electrolysis cell

被引：25
作者：
Hussain, Abid [1 ]
Lebrun, Frederique Matteau [1 ]
Tartakovsky, Boris [1 ]
机构：
[1] Natl Res Council Canada, 6100 Royalmt Ave, Montreal, PQ H4P 2R2, Canada
来源：
ENZYME AND MICROBIAL TECHNOLOGY | 2017年 / 102卷
关键词：
Microbial electrolysis cell; Flow-through; Micro-aerobic; Membraneless; Nitrogen removal; WASTE-WATER TREATMENT; HYDROGEN-PRODUCTION; FUEL-CELLS; METHANE PRODUCTION; APPLIED VOLTAGE; METHANOGENESIS; DENITRIFICATION; AMMONIUM;
D O I：
10.1016/j.enzmictec.2017.03.013
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
This study evaluated performance of an upflow membraneless microbial electrolysis cell (MEC) with flow through electrodes for wastewater treatment. First, methane production and COD removal were evaluated in continuous flow experiments carried out using synthetic and municipal wastewater. A 29-75% increase in methane production was observed under bioelectrochemical conditions as compared to an anaerobic control. Next, simultaneous removal of COD and nitrogen was studied under microaerobic conditions created by continuous air injection to the anodic compartment of the MEC. While the presence of oxygen decreased Coulombic efficiency due to aerobic degradation of COD, enhanced ammonium removal with near zero nitrite and nitrate effluent concentrations was observed. Evidence of direct ammonium oxidation at the anode as well as nitrite and nitrate reduction at the cathode was obtained by comparing performances of MECs operated under anaerobic and microaerobic conditions with the control reactor operated at zero applied voltage.
引用
收藏
页码：41 / 48
页数：8
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