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- W970159164 abstract "Hydrogen was continuously evolved from organic acids by immobilized photosynthetic bacteria. The effect of cell content in calcium alginate beads on the H 2 evolution rate was examined. A 15 m M acetate solution was used as a substrate for hydrogen evolution. The highest hydrogen evolution rate was observed at a cell content of 1%. The optimum concentration of alginate was approximately 1%. However, this gel preparation was too soft for use. Thus, 2% gel and 1% cell content were employed in subsequent experiments. The effect of initial pH on hydrogen evolution by Rhodospirillum rubrum ( R. rubrum ) was examined. The optimum pH of the immobilized photosynthetic bacteria was 7.0, and further increase or decrease of the pH decreased the H 2 evolution rate. The H 2 production rate increased with increasing light intensity up to 5,000 lux. Thus, initial conditions of pH 7.0, 30°, and light intensity 5,000 lux were employed. Hydrogen evolution from organic acids was performed in a batch system using immobilized photosynthetic bacteria. Concentrations of 15 m M acetate, propionate, and butyrate were employed. Hydrogen was evolved from these organic acids by immobilized R. rubrum . The H 2 evolution rate from butyrate was the lowest among these three organic acids. Immobilized bacteria continuously evolved hydrogen over 90 hr from the wastewater containing organic acids. Initially, the amount of hydrogen produced increased with increasing reaction time. Hydrogen produced by the reactors was transferred to an anode of a phosphoric acid fuel cell system at 19–31 ml/min. Oxygen was also transferred to a cathode at 0.1 liter/min." @default.
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- W970159164 date "1988-01-01" @default.
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- W970159164 title "[62] Biochemical energy conversion by immobilized photosynthetic bacteria" @default.
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- W970159164 doi "https://doi.org/10.1016/0076-6879(88)37064-3" @default.
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