摘要
以剩余污泥为阳极底,糖蜜废水为基质,Ag Cl废水为阴极电子受体,构建了双室微生物燃料电池(Two-chamber Microbial Fuel Cell,简称MFCs),并研究了电池的产电特性、库仑效率及金属去除率.结果表明:Ag+不仅可以作为阴极电子受体,而且还能稳定产电,外电阻为1000Ω时,获得的最大电压为514.5 m V,最大功率密度为65.82 m W·m-2.在阴极实现了对废水中Ag+的去除,最大去除率可达71.6%,而且Ag+浓度为2000 mg·L-1时,回收金属银单质质量为197.66 g.在阳极对废水的处理效果也很显著,库仑效率最高为2.66%,COD去除率最大为81.22%.
The study used excess sludge as anode,molasses wastewater as substrate,and Ag Cl wastewater as cathode to construct two-chamber microbial fuel cells( MFCs). Characteristics of electricity generation,coulomb efficiency and metal removal rate were investigated. The result of batch experiments showed that Ag+could be used as not only a cathode but also a device to generate electricity. When external resistance was 1000 Ω,the maximum voltage was 514. 5 m V and the maximum power density was 65. 82 m W·m- 2. The MFCs removed Ag+from wastewater and the maximum removal rate was 71.6%. Recycled silver metal weight was 197. 66 g when the concentration of Ag+was 2000 mg·L- 1. The effect was also significant in the anode: the maximum coulomb efficiency was 2. 66% and the maximum rate of COD removing was 81. 22%.
出处
《环境科学学报》
CAS
CSCD
北大核心
2015年第5期1444-1448,共5页
Acta Scientiae Circumstantiae
基金
中央高校基本科研业务费专项资金(No.2572014AB09)
黑龙江省自然科学基金(No.E201354)
国家"十二五"科支撑项目(No.2011BAD08B01-03)~~
关键词
微生物燃料电池
废水处理
含银废水
microbial fuel cell(MFC)
wastewater treatment
silver wastewater
