• 文献标题:   Graphene Modified Electro-Fenton Catalytic Membrane for in Situ Degradation of Antibiotic Florfenicol
  • 文献类型:   Article
  • 作  者:   JIANG WL, XIA X, HAN JL, DING YC, HAIDER MR, WANG AJ
  • 作者关键词:  
  • 出版物名称:   ENVIRONMENTAL SCIENCE TECHNOLOGY
  • ISSN:   0013-936X EI 1520-5851
  • 通讯作者地址:   Chinese Acad Sci
  • 被引频次:   15
  • DOI:   10.1021/acs.est.8b01894
  • 出版年:   2018

▎ 摘  要

The removal of low-concentration antibiotics from water to alleviate the potential threat of antibiotic-resistant bacteria and genes calls for the development of advanced treatment technologies with high efficiency. In this study, a novel graphene modified electro-Fenton (e-Fenton) catalytic membrane (EFCM) was fabricated for in situ degradation of low-concentration antibiotic florfenicol. The removal efficiency was 90%, much higher than that of electrochemical filtration (50%) and single filtration process (27%). This demonstrated that EFCM acted not only as a cathode for e-Fenton oxidation process in a continuous mode but also as a membrane barrier to concentrate and enhance the mass transfer of florfenicol, which increased its oxidation chances. The removal rate of florfenicol by EFCM was much higher (10.2 +/- 0.1 mg m(-2) +/- h(-1)) than single filtration (2.5 +/- 0.1 mg m(-2) h(-1)) or batch e-Fenton processes (4.3 +/- 0.05 mg m(-2) h(-1)). Long-term operation and fouling experiment further demonstrated the durability and antifouling property of EFCM. Four main degradation pathways of florfenicol were proposed by tracking the degradation byproducts. The above results highlighted the feasibility of this integrated membrane catalysis process for advanced water purification.