赵慧敏

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:环境学院

学科:环境工程. 环境科学

办公地点:环境学院A309

联系方式:0411-84706800

电子邮箱:zhaohuim@dlut.edu.cn

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Bioelectrochemical enhancement of organic matter mineralization and sulfate reduction during acidogenesis

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论文类型:期刊论文

发表时间:2018-03-01

发表刊物:JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY

收录刊物:SCIE、EI、Scopus

卷号:93

期号:3

页面范围:675-682

ISSN号:0268-2575

关键字:MEC; sulfate reduction; acidogenesis; COD removal

摘要:BACKGROUND: The microbial electrolysis cell (MEC) has been widely reported as an efficient strategy to enhance anaerobic digestion. However, the role of the MEC during acidogenesis for treatment of sulfate-containing wastes remains unclear. In this study a pair of electrodes was placed into an acidogenic reactor to form MEC-based acidogenesis to investigate its performance in sulfate-containing wastewater treatment.
   RESULTS: The MEC obviously improved anaerobic acidogenesis treating sulfate-containing wastewater. Higher COD removal and sulfate reduction were obtained in the MEC-based acidogenesis even underhigh sulfate loading conditions. The MEC accelerated the conversion of substrate to acetate, indicating that acidogenesis was enhanced. Fluorescence in situ hybridization (FISH) analysis showed that exoelectrogenic bacteria were enriched in the anodic biofilm.
   CONCLUSION: The syntrophic metabolism between anodic exoelectrogenic bacteria and anaerobic fermentative bacteria might accelerate the anodic decomposition of complex substrates as well as cathodic sulfate reduction, then providing a positive environment for sulfate reduction during acidogenesis. (C) 2017 Society of Chemical Industry