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Title: Efficiencies of Bio-electrocatalytic Production of Hydrogen from Lactate Using Shewanella oneidensis MR-1

Author
item ROSENBAUM, MIRIAM - Cornell University
item Cotta, Michael
item ANGENENT, LARGUS - Cornell University

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/12/2009
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Shewanella oneidensis MR-1 was grown in a chemostatic, continuously-fed bioelectrochemical cell under slightly aerated conditions. The start-up phase was controlled potentiostatically (0.4 V vs. SHE). When a stable performance was achieved, the reactor was switched to bio-electrocatalytic production of hydrogen at the cathode at different offset potentials. The efficiency of hydrogen production and recovery from lactate was evaluated and compared to reported hydrogen production from acetate-fed bioelectrochemical systems (BES). Further, the reactor was studied for power production in microbial fuel cell (MFC) mode. This deteriorated the performance considerably when we compared to the potentiostatically-controlled mode because the reactor configuration was not optimized for power production, but for pure culture studies.