Effects of anode spacing and flow rate on energy recovery of flat-panel air-cathode microbial fuel cells using domestic wastewater

被引：22
作者：
Park, Younghyun [1 ]
Van Khanh Nguyen [2 ]
Park, Seonghwan [3 ]
Yu, Jaecheul [1 ]
Lee, Taeho [1 ]
机构：
[1] Pusan Natl Univ, Dept Civil & Environm Engn, San 30,Jangjeon 2 Dong, Busan 46241, South Korea
[2] Dong A Univ, Dept Environm Engn, Busan 49315, South Korea
[3] Korea Inst Toxicol, Gyeongnam Dept Environm Toxicol & Chem, Future Environm Res Ctr, 17 Jeigok Gil, Jinju Si 52834, Gyeongsangnam D, South Korea
来源：
BIORESOURCE TECHNOLOGY | 2018年 / 258卷
基金：
新加坡国家研究基金会;
关键词：
FA-MFC; Normalized energy recovery; Domestic wastewater; Anode spacing; Flow rate; ELECTRODE CONFIGURATIONS; ELECTRICITY-GENERATION; TREATMENT-PLANT; PERFORMANCE; SYSTEM; COD; TECHNOLOGIES; COMMUNITY; AERATION; REACTOR;
D O I：
10.1016/j.biortech.2018.02.097
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
A flat-panel air-cathode microbial fuel cell (FA-MFC) is known to overcome the low conductivity and biodegradability of domestic wastewater. This study evaluated the normalized energy recovery (NER) based on the volume of wastewater treated (NERV) and chemical oxygen demand (COD) removal (NERCOD) using FA-MFCs with three anode spacing conditions and different flow rates (within a hydraulic retention time of 30 min). Generation of current was similar (11.7 +/- 0.5 mA) at different spacings; however, COD removal was affected by the flow rates. The NERV for both acetate and domestic wastewater showed good agreements with the flow rates in all anode spacing conditions. The NERCOD results were negatively correlated with the COD removal rates, independent of the anode spacing. The FA-MFCs yielded an NERCOD of 0.22 kWh/kg-COD from extremely low-strength domestic wastewater (150 mg-COD/L). The FA-MFC has a significant potential as an energy-sustainable wastewater treatment technology.
引用
收藏
页码：57 / 63
页数：7
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