不同阴极催化剂对城市垃圾渗滤液微生物燃料电池处理的影响  

COMPARING STUDY ON MUNICIPAL SOLID WASTE(MSW)LEACHATE TREATMENT FROM DIFFERENT CATHODIC CATALYSTS IN MICROBIAL FUEL CELL

作　　者：袁浩然[1,2] 邓丽芳[1,2] 黄宏宇[1,2] 陈勇[3] 小林敬幸[1,2] 

机构地区：[1]中国科学院广州能源研究所,广州510640 [2]中国科学院可再生能源重点实验室,广州510640 [3]中国科学院广州分院,广州510070

出　　处：《太阳能学报》2015年第7期1779-1785,共7页Acta Energiae Solaris Sinica

基　　金：国家重点基础研究发展(973)计划(2011CB201501);国家自然基金国际合作项目(51161140330);省院产学院项目(2011B090300076);广州市珠江科技新星专项

摘　　要：以城市垃圾渗滤液为阳极液基质,比较以MnO_2和TiO_2为阴极催化剂时,对MFC电池性能以及渗滤液中有机污染物去除率的影响。结果表明,MnO_2和TiO_2作为阴极催化剂,可催化氧化阴极最终电子受体(O_2)、提高电子传递速率,最终提高电池性能。阴极负载MnO_2后,电池性能显著提高,稳定输出电压和最大功率密度分别增大到0.43 V和0.89 W/m^3。与未负载阴极催化剂的MFC相比,经MFC运行7 d后,渗滤液中的生物需氧量(BOD)和NH_4^+-N去除率分别提高8.1%和5.0%,达72.9%和91.6%。但由于缺少光照,阴极负载TiO_2后电池性能无明显改善,稳定输出电压仅为0.23 V,最大功率密度仅0.12 W/m^3,且渗滤液中有机污染物的BOD和NH_4^+-N去除率比负载MnO_2催化剂的MFC低8.8%和5.7%。In this study, municipal solid waste leachate was used for anode substrate to study the MFC performance and the impact of organic pollutants removal rates when MnO2 and TiO2 were used as cathode catalysts. Results showed that when MnO2 and TiO2 were used as cathode catalysts, the MFC performance was improved obviously due to the possible of catalytic oxidation the final electron acceptor of oxygen and improvement of electron transfer rate. The stable output voltage and maximum power density of MFC increased to 0.43 V and 0.89 W/m3 after the cathode loaded with MnO2 as catalyst. 7 days running later, the BOD and NH4-N removal rates in the leachate increased by 8.1% and 5.0%, getting to 72.9% and 91.6%, compared with the MFC without loading cathode catalyst. However, due to the lack of light, the loading of TiO2 as cathode catalysts does not improve the MFC performance obviously. The stable output voltage and maximum power density of MFC was only 0.23 V and 0.12 W/m3. 7 days running later, the BOD and NH4-N removal rates in the leachate was 8.8% and 5.7% lower than the MFC loading MnO2 as cathode catalysts.

关 键 词：微生物燃料电池 渗滤液 MNO2 TiO2 催化反应机制 

分 类 号：X703.1[环境科学与工程—环境工程]