摘要
通过构建双室微生物燃料电池(MFC),研究了阴极类型对MFC产电特性和阳极脱氮性能的影响。试验结果表明,非生物阴极MFC(A-MFC)以欧姆内阻为主,而生物阴极MFC(BMFC)以活化内阻为主,以Fe(CN)63-作为电子受体的A-MFC的开路电压OCV、表观内阻Rin、最大功率密度P、库伦效率CE分别是以NO3-为电子受体的B-MFC的1.9、0.7、15和3.5倍。A-MFC、B-MFC的阳极对TN的去除率分别为89.5%和75.4%,平均容积去除负荷分别为0.037、0.031 kg/(m^3·d)。B-MFC阳极对NO2--N的去除率达到了95.0%,最大容积去除负荷达到了0.251 kg/(m^3·d),高于A-MFC,也高于传统阴极反硝化MFC;与非生物阴极相比,生物阴极更经济安全,不产生二次污染。
The influence of cathode types on electricity generation and anode denitrification performance of microbial fuel cell(MFC)was explored by constructing a two-chamber MFC.The results showed that abiotic cathode of MFC(A-MFC)was dominated by ohmic resistance,while that of the biocathode of MFC(B-MFC)was mainly activated internal resistance.Open circuit voltage(OCV),internal resistance(Rin),maximum power density(P)and coulombic efficiency(CE)of A-MFC with Fe(CN)63-as electron acceptor were 1.9 times,0.7 times,15 times,and 3.5 times of those of B-MFC with NO3-as electron acceptor.TN removal rates of A-MFC anode and B-MFC anode were 89.5%and 75.4%,respectively,and average volumetric removal loads were 0.037 kg/(m^3·d)and 0.031 kg/(m^3·d),respectively.The removal rate of NO2--N by B-MFC anode reached 95.0%,and the maximum volumetric removal load reached 0.251 kg/(m^3·d),which was higher than those of A-MFC and conventional cathode denitrification MFC.Compared with A-MFC,B-MFC is more economical and safer and does not produce secondary pollution.
作者
崔心水
赵剑强
闫龙梅
李亚妮
CUI Xin-shui;ZHAO Jian-qiang;YAN Long-mei;LI Ya-ni(School of Environmental Science and Engineering,Chang'an University,Xi'an 710064,China;School of Urban Planning and Municipal Engineering,Xi'an Polytechnic University,Xi'an710048,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2019年第21期97-102,共6页
China Water & Wastewater
基金
国家自然科学基金资助项目(51778057)
大学生创新创业训练计划项目(201910709015)
关键词
微生物燃料电池
生物阴极
阳极脱氮
产电
microbial fuel cell
biocathode
anode denitrification
electricity generation
