腐殖酸作用的纯菌与混菌生物阴极微生物燃料电池还原Cr(VI)性能比较
r(VI) reduction and power generation from biocathode microbial fuel cells with pure or mixed cultures and in the absence or presence of humic acid
本文比较了混菌和6株纯菌生物阴极微生物燃料电池(MFCs)还原Cr(VI)性能与电能输出，考察了5 mg/L与0.5 mg/L腐殖酸条件下的纯菌生物阴极还原Cr(VI)与电化学特性。结果表明，SY-1输出电能达29 mW/m2，比混菌高15%，其还原Cr(VI)速率为2.01 mg/(L?h)，与混菌相同；SY-5的Cr(VI)还原速率达2.27 mg/(L?h)，比混菌高14%，输出电能为15 mW/m2，较混菌低41%。腐殖酸抑制所有纯菌还原Cr(VI)性能，与无腐殖酸存在的纯菌还原Cr(VI)相比，SY-1降低了27%，SY-5降低了23%，但系统的电能输出不受影响。研究结果为探讨生物阴极MFCs还原Cr(VI)过程可能的电子传递机制具有一定的借鉴意义。
r(VI) reduction and power production from biocathode microbial fuel cells (MFCs) with mixed or pure cultures and in the absence or presence of HA were explored in this study. While SY-1 produced a power of 29 mW/m2, a 15% improvement than the mixed cultures, Cr(VI) reduction rate catalyzed by this bacterium was the same as that in mixed cultures. Conversely, SY-5 achieved a Cr(VI) reduction rate of 2.27 mg/(L?h), an enhancement of 14% than the mixed cultures whereas power production from SY-5 catalyzed system was 15 mW/m2, a 41% decrease compared to that in mixed cultures. The presence of HA had inhibited Cr(VI) reduction in all pure culture biocathode MFCs whereas power production was not apparently affected. These results were beneficial for clarifying electron transfer mechanisms on the biocathode MFCs using Cr(VI) as a terminal electron acceptor.
申靖雅、孙宇良、黄丽萍
环境污染、环境污染防治生物科学现状、生物科学发展生物工程学环境生物学
微生物燃料电池生物阴极r(VI)还原电能输出腐殖酸
microbial fuel cellsbiocathodesCr(VI)power productionhumic acid
申靖雅,孙宇良,黄丽萍.腐殖酸作用的纯菌与混菌生物阴极微生物燃料电池还原Cr(VI)性能比较[EB/OL].(2015-05-04)[2025-08-17].http://www.paper.edu.cn/releasepaper/content/201505-1.点此复制
评论