外加酶强化剩余污泥微生物燃料电池产电特性的研究  

Electricity Generation of Surplus Sludge Microbial Fuel Cells Enhanced by Additional Enzyme

作　　者：杨慧[1,2] 刘志华[1,2] 李小明[1,3,2] 杨麒[1,2] 方丽[1,2] 黄华军[1,2] 曾光明[1,2] 李硕[4] 

机构地区：[1]湖南大学环境科学与工程学院,长沙410082 [2]环境生物与控制教育部重点实验室(湖南大学),长沙410082 [3]广西大学环境学院,南宁530004 [4]中机国际工程设计研究院有限责任公司,长沙410007

出　　处：《环境科学》2012年第1期216-221,共6页Environmental Science

基　　金：国家自然科学基金项目(51078128);国际科技合作项目(2011DFA90740);湖南省科技计划重点项目(2010WK2012)

摘　　要：以剩余污泥作为接种液和基质,探讨了外加酶(中性蛋白酶、α-淀粉酶)强化单室型剩余污泥微生物燃料电池产电效率的可行性,研究了酶投加量对微生物燃料电池的产电特性及剩余污泥减量的影响.结果表明,在相同条件下,实验组产生的最大功率密度远远高于对照组;当酶的总投加量为10 mg.g-1时,最大输出功率密度及污泥水解效率达到最大,即中性蛋白酶组的最大功率密度、库仑效率、TCOD去除率、TSS去除率、VSS去除率分别为507 mW.m-2、3.98%、88.31%、83.18%、89.03%,而α-淀粉酶组则分别为700 mW.m-2、5.11%、94.09%、98.02%、98.80%.本实验采用向剩余污泥中投加酶的方法,成功增强了微生物燃料电池的产电效率,同时对剩余污泥有效地进行了处理,为微生物燃料电池的实际应用提供了新途径.In this paper the feasibility of enhanced electricity generation of microbial fuel cell fed surplus sludge by additional enzymes （neutral protease and α-amylase） was discussed. The effect of dosage of additional enzyme on characteristics of electricity generation of the surplus sludge microbial fuel cell（SSMFC）and the reduction of surplus sludge were investigated. The results indicated that the maximum output power destiny of the group of experiment was higher than that of control under the same condition. Moreover, the maximum output power density, coulomb efficiency, efficiency of reducing TCOD, efficiency of reducing TSS and efficiency of reducing VSS reached up to 507 W·m-2（700 mW·m-2）,3.98%（5.11%）,88.31%（94.09%）,83.18%（98.02%） and 89.03%（98.80%） respectively for protease（α-amylase） at the dosage of 10 mg·g-1. This study demonstrated that additional enzyme greatly enhanced the electricity generation of MFC with simultaneous accomplishments of sludge treatment, providing a novel approach for the practical application of microbial fuel cell.

关 键 词：剩余污泥 外加酶 微生物燃料电池 功率密度 减量化 

分 类 号：X172[环境科学与工程—环境科学]