文献类型：期刊文献

英文题名：Effect of the chemical oxidation demand to sulfide ratio on sulfide oxidation in microbial fuel cells treating sulfide-rich wastewater

作者：Zhang, Lehua[1];Mao, Yanping[1];Ma, Jingxing[2];Li, Dongmei[1];Shi, Haifeng[1];Liu, Yongdi[1];Cai, Lankun[1]

机构：[1]E China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[2]Univ Libre Bruxelles, Dept Water Pollut Control, Brussels, Belgium

年份：2013

卷号：34

期号：2

起止页码：269

外文期刊名：ENVIRONMENTAL TECHNOLOGY

收录：;EI(收录号：20203209031054);WOS:【SCI-EXPANDED(收录号:WOS:000313951400017)】；

基金：This work was supported by the National Natural Science Foundation of China (NSFC) (20906026), Shanghai Pujiang Program (09PJ1402900), the Fundamental Research Funds for the Central Universities (WB0914036) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (B200-C-0904).

语种：英文

外文关键词：microbial fuel cells; sulfide; sulfur; sulfate; wastewater treatment

摘要：This work focused on studying the effect of the chemical oxidation demand to sulfide ratio (COD/S) on power generation and sulfide oxidation in microbial fuel cells treating sulfide-rich wastewater containing organic contaminants. The maximum power density achieved was 20 +/- 1 W m -3 V Anode and the Coulombic yield was 20 +/- 2%. The COD/S of influent played an important role in elemental sulfur and sulfate production because of competition between acetate oxidation and element sulfur oxidation to sulfate in the anode. When the COD/S was 12.50/1, more than 74.0% of sulfide was converted into elemental sulfur after 24 hours of operation. The effect of the COD/S on power generation was negligible when the COD/S ranged between 4.85/1 and 18.53/1. After 24 hours, the COD removals were 110 +/- 6, 213 +/- 9, 375 +/- 8 and 410 +/- 10 mg l -1 when the COD/S was 4.85/1, 8.9/1, 12.5/1 and 18.53/1, respectively. The COD removal increased with the increasing COD of the influent, which fitted to the model of first-order reaction kinetics.