e-journal

Sustainable power production in a membrane-less and mediator-less synthetic wastewater microbial fuel cell

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Abstract.
Microbial fuel cells (MFCs) fed with wastewater are currently considered a feasible strategy for production
of renewable electricity. A membrane-less MFC with biological cathode was built from a compact wastewater treatment reactor and fed with synthetic wastewater. When operated with an external resistance of 250 W, the MFC produced a long-term power of about 70 mW/m2 for 10 months. Denaturing Gradient Gel Electrophoresis
(DGGE) analysis of the cathode biomass when the MFC was closed on a 2100 X external resistance showed that the sequenced bands were affiliated with Firmicutes, a-Proteobacteria, b-Proteobacteria, c-Proteobacteria, and Bacteroidetes groups. When the external resistance was varied between 250 and 2100 W, minimum sustainable resistance decreased from 900 to 750 W, while maximum sustainable power output decreased from 32 to 28
mW/m2. It is likely that these effects were caused by changes in the microbial ecology of anodic and
cathodic biomass attached to the electrodes. Results suggest that cathodic biomass enrichment in ‘‘electroactive” bacteria may improve MFCs power output in a similar fashion to what has been already
observed for anodic biomass.

Keywords: Microbial fuel cell, Sustainable power, Biocathode, PCR-DGGE

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Informasi Detail

Judul Seri

Bioresource Technology

No. Panggil

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Penerbit

London : Elsevier Ltd.., 2009

Deskripsi Fisik

Bioresource Technology 100 (2009) 3252–3260

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

LINGKUNGAN HIDUP

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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