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

被引：77
作者：
Chong, Poehere [1 ]
Erable, Benjamin [1 ]
Bergel, Alain [1 ]
机构：
[1] Univ Toulouse, Lab Genie Chim, UPS, CNRS,INP, Toulouse, France
来源：
BIORESOURCE TECHNOLOGY | 2019年 / 289卷
关键词：
Bioanode; Porosity; Electroactive biofilm; Microbial fuel cell; Bioelectrochemical system; EXTRACELLULAR ELECTRON-TRANSFER; FUEL-CELL PERFORMANCE; CARBON CLOTH; ELECTRICITY-GENERATION; EFFICIENT ANODE; CURRENT-DENSITY; POWER-DENSITY; GRAPHENE; BIOANODE; BIOFILM;
D O I：
10.1016/j.biortech.2019.121641
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
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.
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页数：12
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