微生物燃料电池处理含铬废水并同步产电  

Cr(Ⅵ)-containing wastewater treatment coupled with electricity generation using microbial fuel cell

作　　者：赵立新[1] 孔凡英 王宣[1] 温青[2] 孙茜[2] 吴英 

机构地区：[1]大庆石油学院机械科学与工程学院,黑龙江大庆163318 [2]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001

出　　处：《现代化工》2009年第11期37-39,41,共4页Modern Chemical Industry

基　　金：大庆科技攻关项目(SGG2008-029);黑龙江省科技攻关项目(GC07A305);哈尔滨工程大学校科学基金(HEUFT08008)资助

摘　　要：以葡萄糖为阳极燃料、含铬废水为阴极液,碳毡为阳极、石墨板为阴极构建了双室微生物燃料电池,考察了阳极条件(底物浓度)及阴极条件(pH、初始六价铬浓度)对含铬废水的降解及MFC的产电性能的影响。结果表明低阴极液pH和高初始Cr(Ⅵ)浓度能改善MFC产电性能。当pH=2、初始六价铬浓度为177mg/L、反应时间为10h时,最大输出功率为108mW/m2,六价铬去除率为92.8%。阳极底物浓度对微生物燃料电池的性能也有影响。在微生物燃料电池中,阴极极化较小,表明该燃料电池有稳定的性能,微生物燃料电池对含铬废水的处理有应用潜力并能同步产电。Bioelectricity generation and wastewater treatment are inspected in a dual-chamber microbial fuel cell, which is constructed using carbon felt as an anode and graphite plate as a cathode, with glucose as anolyte and Cr（ Ⅵ ）-containing wastewater as cathulyte. The effects of anodic （ substrate concentration） and cathodic conditions [ pH and initial Cr （ Ⅵ ） concentration] on the Cr （Ⅵ） removal and power generation are investigated. The results show that increasing initial concentration of Cr（ Ⅵ ） and decreasing pH of wastewater can enhance power density. The maximal power density （ 108 mW/m^2） and removal efficiency of Cr（Ⅵ） （92.8 % ） can be obtained at the initial Cr（Ⅵ） concentration of 177 mg/L when pH = 2 in 10 hours. Furthermore, substrate concentration of anolyte also affects the performance of the MFC. Moreover, in the MFC the polarization of the cathode is low, which indicates that the MFC has a stable performance. MFC is proved to have potential application for Cr（Ⅵ）-containing wastewater treatment in association with electricity generation.

关 键 词：微生物燃料电池 阴极液 功率密度 六价铬 

分 类 号：R703[医药卫生—临床医学]