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. 2022 Apr 12;13:820989. doi: 10.3389/fmicb.2022.820989

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Copyright © 2022 Ouboter, Berben, Berger, Jetten, Sleutels, Ter Heijne and Welte.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Schematic overview of the BES with (A) stainless steel cathode, (B) carbon cloth anode (7.2 × 2.5 cm), (C) Gas-in CH₄/CO₂ 95%/5%, N₂ > 99% (D) Ag/AgCl reference electrode, (E) nafion cation exchange membrane, (F) potentiostat, (G) platinum wire, and (H) stirring bar.