利用过硫酸盐阴极型微生物燃料电池降解蒽醌燃料活性艳蓝的研究  

Decolorization of an Anthraquinone Dye Reactive Brilliant Blue KN-R in Microbial Fuel Cells Using Ferrous Catalyzed Persulfate

作　　者：金春姬[1,2] 于辉[1] 刘明[1] 孙若晨 杨远乐 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100 [2]中国海洋大学海洋环境与生态教育部重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2015年第4期85-94,共10页Periodical of Ocean University of China

基　　金：山东省自然科学基金项目(ZR2011BM014)资助

摘　　要：本研究构建了以二价铁/过硫酸盐体系(Fe2+/PDS)为阴极液,以蒽醌染料活性艳蓝KN-R作为目标污染物的双室微生物燃料电池(MFC),研究了初始Fe2+投加量,初始PDS浓度和pH值对KN-R脱色率和MFC产电性能的影响。结果表明,当初始pH为3,Fe2+的初始浓度为1mmol·L-1,PDS的初始浓度为2mmol·L-1,温度为(30±1)℃时Fe2+/PDS-MFC体系达到最佳状态,此时KN-R的脱色率为96.90%,MFC的最大功率密度为294.07mW·m-2。动力学分析表明KN-R的脱色降解符合二级反应动力学,最佳条件下KN-R降解的反应速率常速为0.001 7mmol·L-1·min-1。紫外-可见光谱分析表明,Fe2+/PDS-MFC体系能够有效的脱色降解KN-R及其中间产物。This study constructed a double chamber microbial fuel cell（MFC）,with ferrous iron/persulfate system（Fe2＋/PDS）as the cathode liquid and the anthraquinone dye Reactive Brilliant Blue KN-R as the goal pollutants.It investigated initial Fe2＋dosage,PDS concentration,pH on the KN-R decoloration rate and the electrogenesis capacity of MFC.The results showed that the KN-R had the largest degradation rate at the condition of initial pH,Fe2＋and PDS concentration was 3,1mmol·L-1,2mmol·L-1,respectively.The maximum degradation rate was 96.90% and the maximum power density of the MFC was 294.07mW·m-2.Dynamics analysis showed that the decoloration process followed the second-order kinetic model and the reaction rate constant was 0.001 7mmol·L-1· min-1 under optimum condition.Uv-vis spectrum analysis showed that the Fe2＋/PDS-MFC system can degrade KN-R and its intermediate products effectively.

关 键 词：微生物燃料电池 二价铁 过硫酸盐 KN-R脱色率 最大功率密度 

分 类 号：O646.21[理学—物理化学]