Electron Recycle Concept in a Microbial Electrolysis Cell for Biogas Upgrading,Chemical Engineering & Technology

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Electron Recycle Concept in a Microbial Electrolysis Cell for Biogas Upgrading
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-12-13 , DOI: 10.1002/ceat.202100534
Lorenzo Cristiani ₁ , Jacopo Ferretti ₁ , Marco Zeppilli ₁

Affiliation

An innovative strategy to control the metabolism of microorganisms is offered by bioelectrochemical systems in which a graphite-based cathode can be used as electron donor or acceptor. An advanced microbial electrolysis cell is developed to combine CO₂ removal from a synthetic biogas in a biocathode and the organic matter oxidation in a bioanode. A novel biogas upgrading approach is presented in which an electron recycle concept is obtained by the combination of CO₂ reduction and oxidation. While the bioelectrochemical anodic chemical oxygen demand oxidation provides the electrons necessary for the cathodic CO₂ reduction into methane and acetate, the acetate produced by acetogenic microorganisms migrates from the cathode to the anode being oxidized again by the bioanode.

中文翻译：

用于沼气升级的微生物电解池中的电子循环概念

生物电化学系统提供了一种控制微生物代谢的创新策略，其中石墨基阴极可用作电子供体或受体。开发了一种先进的微生物电解池，将生物阴极中合成沼气中 CO ₂的去除与生物阳极中的有机物氧化结合起来。_{提出了一种新型沼气提质方法，其中通过 CO 2}还原和氧化的组合获得电子循环概念。而生物电化学阳极化学需氧量氧化提供阴极CO _{2所需的电子}还原成甲烷和乙酸盐，产乙酸微生物产生的乙酸盐从阴极迁移到阳极，再次被生物阳极氧化。

更新日期：2022-02-10

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