Turning cellulose waste into electricity: hydrogen conversion by a hydrogenase electrode.
basic_science · Level V
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- Record sourced from PubMed, PMID 24312437.
- Also identified by DOI 10.1371/journal.pone.0083004 and PMC identifier PMC1082790.
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Abstract
Hydrogen-producing thermophilic cellulolytic microorganisms were isolated from cow faeces. Rates of cellulose hydrolysis and hydrogen formation were 0.2 mM L(-1) h(-1) and 1 mM L(-1) h(-1), respectively. An enzymatic fuel cell (EFC) with a hydrogenase anode was used to oxidise hydrogen produced in a microbial bioreactor. The hydrogenase electrode was exposed for 38 days (912 h) to a thermophilic fermentation medium. The hydrogenase activity remaining after continuous operation under load was 73% of the initial value.