ePrints Repository

Electro-extractive fermentation for efficient biohydrogen production

Redwood, MD and Orozco, RL and Majewski, AJ and Macaskie, LE (2012) Electro-extractive fermentation for efficient biohydrogen production. Bioresource Technology. (In Press)

PDF (414Kb)

URL of Published Version: http://dx.doi.org/10.1016/j.biortech.2011.11.026

Identification Number/DOI: 10.1016/j.biortech.2011.11.026

Electrodialysis, an electrochemical membrane technique, was found to prolong and enhance the production of biohydrogen and purified organic acids via the anaerobic fermentation of glucose by Escherichia coli. Through the design of a model electrodialysis medium using cationic buffer, pH was precisely controlled electrokinetically, i.e. by the regulated extraction of acidic products with coulombic efficiencies of organic acid recovery in the range 50–70% maintained over continuous 30-day experiments. Contrary to
previous reports, E. coli produced H2 after aerobic growth in minimal medium without inducers and with a mixture of organic acids dominated by butyrate. The selective separation of organic acids from fermentation provides a potential nitrogen-free carbon source for further biohydrogen production in a parallel photofermentation. A parallel study incorporated this fermentation system into an integrated biohydrogen refinery (IBR) for the conversion of organic waste to hydrogen and energy.

Type of Work:Article
Date:2012 (Publication)
School/Faculty:Colleges (2008 onwards) > College of Life & Environmental Sciences
Department:School of Biosciences
Subjects:Q Science (General)
Institution:University of Birmingham
Copyright Holders:Elsevier
ID Code:985
Export Reference As : ASCII + BibTeX + Dublin Core + EndNote + HTML + METS + MODS + OpenURL Object + Reference Manager + Refer + RefWorks
Share this item :
QR Code for this page

Repository Staff Only: item control page