Biodegradation of PFOA in microbial electrolysis cells by acidimicrobiaceae sp. strain A6
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Acidimicrobiaceae sp. strain A6 (A6), is an anaerobic autotrophic bacterium capable of oxidizing ammonium (NH 4 + ) while reducing ferric iron and is also able to defluorinate PFAS under these growth conditions. A6 is exoelectrogenic and can grow in microbial electrolysis cells (MECs) by using the anode as the electron acceptor in lieu of ferric iron. Therefore, cultures of A6 amended with perfluorooctanoic acid (PFOA) were incubated in MECs to investigate its ability to defluorinate PFAS in such reactors. Results show a significant decrease in PFOA concentration after 18 days of operation, while producing current and removing NH 4 + . The buildup of fluoride and shorter chain perfluorinated products was detected only in MECs with applied potential, active A6, and amended with PFOA, confirming the biodegradation of PFOA in these systems. This work sets the stage for further studies on the application of A6-based per- and polyfluorinated alkyl substances (PFAS) bioremediation in microbial electrochemical systems for water treatment.
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Acidimicrobium sp. strain A6 biotransforms PFOA and PFOS.
“Acidimicrobium sp. strain A6 (A6) for PFOA and PFOS (Huang and Jaffé, 2019; Huang et al., 2022; Ruiz-Urigüen et al., 2022)”
From A review of microbial degradation of per- and polyfluoroalkyl substances (PFAS): Biotransformation routes and enzymes (2023) · cites this paper as Ruiz-Urigüen et al., 2022
PFOA decreased by 77% with products PFBA, PFPeA, PFHxA, PFHpA and fluoride.
“77 % decrease in PFOA. Products: PFBA, PFPeA, PFHxA, PFHpA and F−”
From A review of microbial degradation of per- and polyfluoroalkyl substances (PFAS): Biotransformation routes and enzymes (2023) · cites this paper as Ruiz-Urigüen et al., 2022
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- Authors
- Ruiz-Urigüen, M., Shuai, W., Huang, S., & Jaffé, P. R.
- Affiliations
- Princeton University (US)
- Corresponding author
- Jaffé, Peter R.
- Venue
- Chemosphere
- Publisher
- Elsevier BV
- Published
- 2022-04
- Volume
- 292
- Pages
- 133506
- ISSN
- 0045-6535 (ISSN-L)
- OpenAlex
- W4205190494
- Cited by
- 114
- References
- 6
- Citations by year
- 2026: 23 · 2025: 36 · 2024: 31 · 2023: 17 · 2022: 7
- FWCI
- 8.08
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- www.elsevier.com/tdm/userlicense/1.0/ (tdm)
- www.elsevier.com/legal/tdmrep-license (tdm)
- www.elsevier.com/open-access/userlicense/1.0/ (am, 281 d)
- doi.org/10.15223/policy-017 (stm-asf)
- doi.org/10.15223/policy-037 (stm-asf)
- doi.org/10.15223/policy-012 (stm-asf)
- doi.org/10.15223/policy-029 (stm-asf)
- doi.org/10.15223/policy-004 (stm-asf)
- Locations
- Chemosphere (acceptedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chemical Analysis and Environmental Impact
- Keywords
- perfluorooctanoic acid, microbial electrolysis cells, exoelectrogenic bacteria, fluoride accumulation, per- and polyfluoroalkyl substances, microbial electrochemical systems, water treatment
- MeSH terms
- Biodegradation, Environmental, Caprylates, Electrolysis, Fluorocarbons
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