DOI number:10.1016/j.jenvman.2023.118978

Journal:Journal of Environmental Management

Key Words:Biodegradation; Direct inter-species electron transfer; Iron-rich sludge biochar; PFOA; Sporomusa

Abstract: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.

Indexed by:Journal paper

Document Code:118978

Discipline:Engineering

First-Level Discipline:Environmental Science and Engineering

Document Type:J

Volume:346

ISSN No.:0301-4797

Translation or Not:no

Date of Publication:2023-11-15

Included Journals:SCI

Links to published journals:https://www.sciencedirect.com/science/article/pii/S0301479723017668?pes=vor

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