Relation of anodic and cathodic performance to pH variations in membraneless microbial fuel cells

被引：43
作者：
Guerrini, Edoardo [2 ]
Cristiani, Pierangela [1 ]
Trasatti, Stefano Pierpaolo Marcello [2 ]
机构：
[1] RSE Ric Sistema Energet SpA, Environm & Sustainable Dev Dept, I-20133 Milan, Italy
[2] Univ Milan, Dept Phys Chem & Electrochem, I-20133 Milan, Italy
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 01期
关键词：
Pt-free cathode; Biocathode; Sulfur acetate Pourbaix diagram; Membraneless microbial fuel cell; pH variation; ELECTRICITY; GENERATION; BIOCATHODE; METHANOL; SYSTEMS; WASTE; MFCS;
D O I：
10.1016/j.ijhydene.2012.10.001
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
One-compartment (membraneless) microbial fuel cells (MFCs) are effective tools to test new bio-technology at a laboratory level. More efforts in MFC design and materials are necessary to move from laboratory tests to real applications. In such a context, this paper presents the experimental results that investigate pH variations of three single chamber and membraneless MFCs having positive and negative electrodes made of graphite-based materials without any addition of chemical catalysts. MFCs were built and operated with raw wastewater (inoculum) and sodium acetate as substrate. The progression of the power in the MFC and the relationship between performances and induced pH variation (from pH 6.7 to 10.2) will be discussed. A general connection between SEM images, chemical analyses, pH trends and reactions in the MFCs will be attempted, by connecting all processes with thermodynamic and chemical equilibria considerations. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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页码：345 / 353
页数：9
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