研究报告

  • 蔡靖,陈碧龙,刘思懿,吴媛媛,郑紫凌.生物-电协同驱动型同步脱氮除硫工艺性能及功能菌群分析[J].环境科学学报,2022,42(6):44-51

  • 生物-电协同驱动型同步脱氮除硫工艺性能及功能菌群分析
  • Performance and functional microbial community of simultaneous sulfide and nitrate removal process based on bioelectrochemical system
  • 基金项目:国家自然科学青年基金项目(No.51808494);浙江省教育厅科研资助项目(No.Y202045230)
  • 作者
  • 单位
  • 蔡靖
  • 浙江工商大学环境科学与工程学院,杭州 310018
  • 陈碧龙
  • 浙江工商大学环境科学与工程学院,杭州 310018
  • 刘思懿
  • 浙江工商大学环境科学与工程学院,杭州 310018
  • 吴媛媛
  • 浙江工商大学环境科学与工程学院,杭州 310018
  • 郑紫凌
  • 浙江工商大学环境科学与工程学院,杭州 310018
  • 摘要:同步脱氮除硫燃料电池可同时去除氮硫污染物并产生电能,其同步脱氮除硫功能受到生物驱动和电能驱动的双重作用.为探究该新型工艺中生物驱动和电能驱动的贡献,分别构建了电能驱动型、生物驱动型和生物-电驱动型同步脱氮除硫系统,并考察了其基质去除性能、产物类型分布和电能产生情况.结果表明,生物驱动型和生物-电驱动型系统皆具有良好的同步脱氮除硫功能,而电能驱动系统仅具有硫氧化功能.通过衡算不同驱动型系统对基质去除的贡献率以及对产物产生的贡献比,发现在生物-电驱动系统中,电能驱动和生物驱动在硝酸盐还原,硫酸盐和氮气的生成以及电量产生方面皆具有协同效应.并通过高通量测序分别从门和属分类水平对生物驱动系统和生物-电驱动系统阳极室内污泥细菌群落进行分析,相对丰度较高的菌门都是Proteobacteria和Bacteroidetes,而生物驱动系统的优势菌属为HalothiobacillusThauera,生物-电驱动系统的优势菌属为MarinilabiaceaeRhodanobacter.
  • Abstract:Microbial fuel cells coupled with simultaneous sulfide and nitrate process can remove nitrogen and sulfur at the same time, as well as generating electricity, while its function of sulfide and nitrate removal is driven by biological and electrochemical force. In order to explore the contribution of biological and electrochemical force, simultaneous sulfide and nitrate process with electrochemical, biological and bioelectrochemical drive were constructed, respectively, and their substrate removal performance, products and electricity generation were comparatively investigated. results show that the both biological and electrochemical system have shown simultaneous sulfide and nitrate removal, while the electrochemical system is only capable of oxidizing sulfide. It is found that electrochemical and biological drive have synergistic effects on nitrate reduction, sulfate and nitrogen production and electricity generation in bioelectrochemical system. Taxonomic distribution of bacterial community in suspended sludge of biological system and bioelectrochemical system’s anode chamber was presented by high-throughput sequencing from phylum level to genus level. Results show Proteobacteria and Bacteroides are relatively abundant. The predominant genera in the biological system are Halothiobacillus and Thauera, while Marinilabiaceae and Rhodanobacter are mainly in bioelectrochemical system.

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