Significant Increase in Hydrogen Photoproduction Rates and Yields by Wild-Type Algae is Detected at High Photobioreactor Gas Phase Volume (Fact Sheet)

关键词: ALGAE;    BACTERIA;    CONTRACTORS;    FUEL CELLS;    HYDROGEN;    PARTIAL PRESSURE;    PHOTOPRODUCTION HYDROGEN PRODUCTION;    PHOTOBIOREACTOR;    ALGAE;    ALGAL;    PHOTOPRODUCTION;    HIGHLIGHT;    Hydrogen Technologies and Systems;    Solar Energy - Radiation;   

DOI  :  10.2172/1047330
RP-ID  :  NREL/FS-5600-54503
PID  :  OSTI ID: 1047330
Others  :  TRN: US201216%%379

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来源: SciTech Connect

【 摘 要 】

This NREL Hydrogen and Fuel Cell Technical Highlight describes how hydrogen photoproduction activity in algal cultures can be improved dramatically by increasing the gas-phase to liquid-phase volume ratio of the photobioreactor. NREL, in partnership with subcontractors from the Institute of Basic Biological Problems in Pushchino, Russia, demonstrated that the hydrogen photoproduction rate in algal cultures always decreases exponentially with increasing hydrogen partial pressure above the culture. The inhibitory effect of high hydrogen concentrations in the photobioreactor gas phase on hydrogen photoproduction by algae is significant and comparable to the effect observed with some anaerobic bacteria.