聚苯胺/Fe-N-还原石墨烯改性导电膜耦合膜生物反应器/微生物燃料电池污水处理研究  

Preparation of polyaniline and Fe-N-reduced graphene oxide(rGO) modified conductive membrane and its performance in membrane bioreactor/microbial fuel cell coupled wastewater treatment system

作　　者：李益华 李晖[1] LI Yi-hua;LI Hui(School of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu 610041, P. R. C.)

机构地区：[1]西南民族大学化学与环境保护工程学院,四川成都610041

出　　处：《西南民族大学学报（自然科学版）》2018年第3期282-286,共5页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：中央高校基本科研业务费专项资金青年教师项目(编号:2018NQN42)

摘　　要：针对膜技术处理污水时存在膜污染严重及能耗高的问题,采用层层组装法改性聚酯滤布,制备了含聚苯胺(PANI)和Fe-N-功能化还原石墨烯(Fe-N-r GO)催化剂的导电膜,并用该膜耦合膜生物反应器/微生物燃料电池系统(MBR/MFC)处理模拟生活污水.结果表明,MBR/MFC耦合系统处理污水时,系统开路电势达到0.5 V,体系产电最大功率密度达117 m W·m^(-3).体系对COD去除率约为93%,NH_4^+-N去除率为62%,并且去除的NH_4^+-N直接转化为N_2排出系统.经过层层改性,导电膜的表观电阻由最初的完全绝缘提高到58Ωcm^(-1),实验成功地将绝缘材料的聚酯滤布改性为导电膜.该MBR/MFC耦合系统将为节能高效的水处理技术开发提供新思路.Water pollution and energy crisis are two issues worldwide. Conductive membrane was synthesized by modifying filter cloth through layer-by-layer method. Then, the as-prepared conductive membrane coated with polyaniline （PANI） and Fe-N- doped reduced graphene oxide （Fe-N-rGO） catalyst was used in membrane bioreactor （MBR） / microbial fuel cell （MFC） coupled system, to recover energy from wastewater. The results showed the open circuit voltage of the MBR/MFC coupled system reached 0.5 V, and the maximum power density was 117 mW · m^-3. The contaminants removal rates of the MBRIMFC coupled system were：COD accumulated as 93 % ,NH4^＋-N accumulated as 62 %. Moreover,the removed NH4^＋-N of the system was converted to N2 according to this tests. This study successfully modified filter cloth from insulation to conductive state after being coated with two pieces of Fe-N-rGO and PANI,and the conductivity of the prepared conductive membrane was 58 · cm^-1. This study provided a new way for the development of energy-saving and efficient wastewater treatment technologies.

关 键 词：聚苯胺 还原氧化石墨烯 微生物燃料电池 阴极膜 污水处理 膜生物反应器 

分 类 号：TB383[一般工业技术—材料科学与工程] X703[环境科学与工程—环境工程]