NDLI: Open circuit versus closed circuit enrichment of anodic biofilms in MFC: effect on performance and anodic communities

Content Provider	Springer Nature Link
Author	Larrosa Guerrero, Amor Scott, Keith Katuri, Krishna P. Godinez, Carlos Head, Ian M. Curtis, Thomas
Copyright Year	2010
Abstract	The influence of various carbon anodes; graphite, sponge, paper, cloth, felt, fiber, foam and reticulated vitreous carbon (RVC); on microbial fuel cell (MFC) performance is reported. The feed was brewery wastewater diluted in domestic wastewater. Biofilms were grown at open circuit or under an external load. Microbial diversity was analysed as a function of current and anode material. The bacterial community formed at open circuit was influenced by the anode material. However at closed circuit its role in determining the bacterial consortia formed was less important than the passage of current. The rate and extent of organic matter removal were similar for all materials: over 95% under closed circuit. The biofilm in MFCs working at open circuit and in the control reactors, increased COD removal by up to a factor of nine compared with that for baseline reactors. The average voltage output was 0.6 V at closed circuit, with an external resistor of 300 kΩ and 0.75 V at open circuit for all materials except RVC. The poor performance of this material might be related to the surface area available and concentration polarizations caused by the morphology of the material and the structure of the biofilm. Peak power varied from 1.3 mW m−2 for RVC to 568 mW m−2 for graphite with biofilm grown at closed circuit.
Starting Page	1699
Ending Page	1713
Page Count	15
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	87
Issue Number	5
e-ISSN	14320614
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-05-16
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Microbial fuel cell Wastewater treatment Bacteria selection Anode Carbon materials Microbial Genetics and Genomics Microbiology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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