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Vitamin B12 and iron-rich sludge-derived biochar enhanced PFOA biodegradation: Importance of direct inter-species electron transfer and functional microbes

发布时间：2024-09-28点击次数：

  • DOI码：10.1016/j.jenvman.2023.118978
  • 发表刊物：Journal of Environmental Management
  • 关键字：Biodegradation; Direct inter-species electron transfer; Iron-rich sludge biochar; PFOA; Sporomusa
  • 摘要：Owing to the strong C–F bond in nature and the rigidity of the poly-fluoroalkyl chain, perfluorooctanoic acid (PFOA) is difficult to be eliminated by reactive species and microbes in environments, thus posing a serious threat to ecosystems. Vitamin B12 as a cofactor for enzymes, and biochar as the electron providers and conductors, were integrated to enhance PFOA biodegradation. The raw material of biochar was the sludge after dewatering by adding 50 mg/g DS of Fe(III). After pyrolysis under high temperature (800 °C), biochar (SC800) detected high content of Fe(II) (197.64 mg/g) and abundant oxygen-containing functional groups, thus boosting PFOA biodegradation via donating electrons. 99.9% of PFOA could be removed within 60 d as 0.1 g/L SC800 was presented in the microbial systems containing vitamin B12. Moreover, vitamin B12 facilitated the evolution of Sporomusa which behaved the deflorination. Via providing reactive sites and mediating direct inter-species electron transfer (DIET), SC800 boosted PFOA biodegradation. Corresponding novel results in the present study could guide the development of bioremediation technologies for PFOA-polluted sites.
  • 论文类型：期刊论文
  • 论文编号：118978
  • 学科门类：工学
  • 一级学科：环境科学与工程
  • 文献类型：J
  • 卷号：346
  • ISSN号：0301-4797
  • 是否译文：否
  • 发表时间：2023-11-15
  • 收录刊物：SCI
  • 发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0301479723017668?pes=vor

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张凯凯

个人信息

  • 教师英文名称：Kaikai Zhang
  • 教师拼音名称：zhangkaikai
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  • 所在单位：环境与测绘学院
  • 性别：男
  • 学位：工学博士学位

曾获荣誉：

  • 2021-09-272020 年度华中科技大学环境学院国祯环卫一等奖学金
  • 2023-05-15第八届地学青年地学论坛优秀学生报告奖

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