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Towards an integrated system for bio-energy: hydrogen production by Escherichia coli and use of palladium-coated waste cells for electricity generation in a fuel cell

Orozco, RL and Redwood, MD and Yong, P and Caldelari, I and Sargent, F and Macaskie, LE (2010) Towards an integrated system for bio-energy: hydrogen production by Escherichia coli and use of palladium-coated waste cells for electricity generation in a fuel cell. Biotechnology Letters, 32. pp. 1837-1845.

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URL of Published Version: http://www.ncbi.nlm.nih.gov/pubmed/20809286

Identification Number/DOI: DOI 10.1007/s10529-010-0383-9

Escherichia coli strains MC4100 (parent)
and a mutant strain derived from this (IC007) were
evaluated for their ability to produce H2 and organic
acids (OAs) via fermentation. Following growth,
each strain was coated with Pd(0) via bioreduction of
Pd(II). Dried, sintered Pd-biomaterials (‘Bio-Pd’)
were tested as anodes in a proton exchange membrane
(PEM) fuel cell for their ability to generate
electricity from H2. Both strains produced hydrogen
and OAs but ‘palladised’ cells of strain IC007 (Bio-
PdIC007) produced *threefold more power as compared
to Bio-PdMC4100 (56 and 18 mW respectively).
The power output used, for comparison, commercial
Pd(0) powder and Bio-Pd made from Desulfovibrio
desulfuricans, was *100 mW. The implications of these findings for an integrated energy generating
process are discussed.

Type of Work:Article
Date:2010 (Publication)
School/Faculty:Colleges (2008 onwards) > College of Life & Environmental Sciences
Department:School of Biosciences
Subjects:Q Science (General)
Institution:University of Birmingham, University og Dundee
Copyright Holders:Kluwer, Springer
ID Code:1002
Refereed:YES
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