Generation of Hydrogen from Photolysis of Organic Acids by Photosynthetic Bacteria

Photodccomposition of ten kinds of organic acids by Rhodopseudomonas palustris for producing hydrogen has been investigated,By using acctate as hydrogen donor,dynamics of hydrogen production and cell growth has been determined;the influences of acetate concentration,temperature,light intensity and the effects of the ineraction among metal ions (Fe^3 ,Ni^ ),acctate and glutamatc in aqueous solution on hydrogen production have been examined for optimizing the conditions of H2 generation .The results show that H2 production is partially correlated with cell growth ;Ni^2 inhibits hydrogen production,but enhances cell growth; Fe^3 promotes hydrogen production evidcntly,The highest rate of H2 production is 22.1 mL L^-1h^-1 under the conditions of 35-37℃,6000-8000lx,30 mmolL^-1 of acetate, 9mmolL^-1 of glutamate, and 50μmolL^-1 of Fe^3 .

Generation of Hydrogen from Photolysis of Organic Acids by Photosynthetic Bacteria

Photodecomposition of ten kinds of organic acids by Rhodopseudomonas palustris for producing hydrogen has been investigated. By using acetate as hydrogen donor, dynamics of hydrogen production and cell growth has been determined; the influences of acetate concentration, temperature, light intensity and the effects of the interaction among metal ions (Fe3+, Ni2+), acetate and glutamate in aqueous solution on hydrogen production have been examined for optimizing the conditions of H2 generation. The results show that H2 production is partially correlated with cell growth; Ni2+ inhibits hydrogen production, but enhances cell growth; Fe3+ promotes hydrogen production evidently. The highest rate of H2 production is 22.1 mL L-1 h-1 under the conditions of 35 ~ 37℃, 6000 ~ 8000 lx, 30 mmolL-1 of acetate, 9 mmolL-1 of glutamate, and 50 (molL-1 of Fe3+.