FeS对CW-MFC系统降解活性艳红X-3B效果及过程的影响

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摘要在自行构建的人工湿地-微生物燃料电池(CW-MFC)系统中,以砾石填料为对照,研究了FeS对活性艳红X-3B脱色效果及降解过程的影响.结果表明,加在底层区域的FeS能够显著提高CW-MFC对活性艳红X-3B的脱色效果和系统产电性能.FeS的投加使得系统脱色率在进水活性艳红X-3B浓度200mg/L、葡萄糖浓度100mg/L条件下达到99.83%.在进水活性艳红X-3B浓度100mg/L、葡萄糖浓度200mg/L条件下,FeS组最大功率密度达到0.849W/m³.活性艳红X-3B在系统中的脱色主要发生在底层和阳极区域,由紫外-可见全波长扫描图谱和GC-MS扫描图谱可知FeS在该区域促进了偶氮双键的断裂,并有利于脱色产物苯胺、三嗪结构、萘环结构的进一步降解.

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关键词 ：人工湿地微生物燃料电池, 活性艳红X-3B, FeS, 脱色效果, 降解过程

Abstract：In the self-constructed wetland-microbial fuel cell (CW-MFC), the effect of FeS on the decolorization and degradation process of reactive brilliant red X-3B was studied by using gravel filter as a control. The results showed that the addition of FeS in the underlying region could significantly improve the decolorization effect and the system electricity generation performance of CW-MFC on reactive brilliant red X-3B. The addition of FeS made the system decolorization rate reach 99.83% under the conditions of influent of 200mg/L reactive brilliant red X-3B and glucose of 100mg/L. The maximum power density in FeS group reached 0.849W/m³ with influent of 100mg/L reactive brilliant red X-3B and glucose of 200mg/L. The decolorization of reactive brilliant red X-3B in the system mainly occurred in the bottom layer and anode regions, which could be seen from the UV full-wavelength scanning and GC-MS spectrum that FeS promoted the breakage of azo double bonds in this region, and was conducive to the further degradation of the decolorization products aniline, triazine structure and naphthalene ring structure.

Key words： CW-MFC reactive brilliant red X-3B FeS decolorization degradation process

收稿日期: 2021-12-16

PACS:

X703

基金资助:江苏省科技支撑计划重点项目(BE2016357)

通讯作者: 赵联芳,副教授,lfzhao@hhu.edu.cn E-mail: lfzhao@hhu.edu.cn

作者简介: 赵联芳(1972-),女,河北易县人,副教授,博士,研究方向为水体污染控制与生态修复技术与理论.发表论文50余篇.

引用本文:

赵联芳, 于雪晴, 路宗仁, 刘成, 李颖. FeS对CW-MFC系统降解活性艳红X-3B效果及过程的影响[J]. 中国环境科学, 2022, 42(7): 3093-3102. ZHAO Lian-fang, YU Xue-qing, LU Zong-ren, LIU Cheng, LI Ying. Effect of FeS on reactive brilliant red X-3B removal effect and degradation process in CW-MFC system. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(7): 3093-3102.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2022/V42/I7/3093

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