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Effect of pore size on the current produced by 3-dimensional porous microbial anodes: A critical review

Chong, Poehere and Erable, Benjamin and Bergel, Alain Effect of pore size on the current produced by 3-dimensional porous microbial anodes: A critical review. (2019) Bioresource Technology, 289. 121641. ISSN 0960-8524

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Official URL: https://doi.org/10.1016/j.biortech.2019.121641

Abstract

Microbial anodes are the cornerstone of most electro-microbial processes. Designing 3-dimensional porous electrodes to increase the surface area of the electroactive biofilm they support is a key challenge in order to boost their performance. In this context, the critical review presented here aims to assess whether an optimal range of pore size may exist for the design of microbial anodes. Pore sizes of a few micrometres can enable microbial cells to penetrate but in conditions that do not favour efficient development of electroactive biofilms. Pores of a few tens of micrometres are subject to clogging. Sizes of a few hundreds of micrometres allow penetration of the biofilm inside the structure, but its development is limited by internal acidification. Consequently, pore sizes of a millimetre or so appear to be the most suitable. In addition, a simple theoretical approach is described to establish basis for porous microbial anode design.

Item Type:Article
HAL Id:hal-02285347
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Agence Nationale de la Recherche- ANR
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Deposited On:12 Sep 2019 14:16

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