Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.ese.2023.100307
Lizenz creative commons licence
Titel (primär) Microbial electricity-driven anaerobic phenol degradation in bioelectrochemical systems
Autor Dai, S.; Harnisch, F. ORCID logo ; Chávez Morejón, M.; Keller, N.S.; Korth, B. ORCID logo ; Vogt, C.
Quelle Environmental Science and Ecotechnology
Erscheinungsjahr 2024
Band/Volume 17
Seite von art. 100307
Sprache englisch
Topic T7 Bioeconomy
Keywords Microbial electroremediation; Geobacter; Extracellular electron transfer; Anaerobic phenol degradation; Microbial syntrophy
Abstract Microbial electrochemical technologies have been extensively employed for phenol removal. Yet, previous research has yielded inconsistent results, leaving uncertainties regarding the feasibility of phenol degradation under strictly anaerobic conditions using anodes as sole terminal electron acceptors. In this study, we employed high-performance liquid chromatography and gas chromatography-mass spectrometry to investigate the anaerobic phenol degradation pathway. Our findings provide robust evidence for the purely anaerobic degradation of phenol, as we identified benzoic acid, 4-hydroxy-benzoic acid, glutaric acid, and other metabolites of this pathway. Notably, no typical intermediates of the aerobic phenol degradation pathway were detected. One-chamber reactors (+0.4 V vs. SHE) exhibited a phenol removal rate of 3.5 ± 0.2 mg L−1 d−1, while two-chamber reactors showed 3.6 ± 0.1 and 2.6 ± 0.9 mg L−1 d−1 at anode potentials of +0.4 and + 0.2 V, respectively. Our results also suggest that the reactor configuration certainly influenced the microbial community, presumably leading to different ratios of phenol consumers and microorganisms feeding on degradation products.
dauerhafte UFZ-Verlinkung
Dai, S., Harnisch, F., Chávez Morejón, M., Keller, N.S., Korth, B., Vogt, C. (2024):
Microbial electricity-driven anaerobic phenol degradation in bioelectrochemical systems
Environ. Sci. Ecotechnol. 17 , art. 100307 10.1016/j.ese.2023.100307