Effects of Fe2+ on Fermentation and Biohydrogen Production of Biohydrogenbacterium R3 sp.nov.

This study investigated the effects of Fe2+ on the cell growth and hydrogen production to Biohydrogenbacterium R3 sp.nov. in the batch test. The hydrogen production got the maximum of 12.54mmol/L when the concentration of Fe2+ was 40 mg/L and the hydrogen content, OD600nm, glucose consumption and the concentration of ethanol had the maximum of 45.2 %, 1.31 g/L, 92 % and 1073.34 mg/L respectively when the concentration of Fe2+ was 100 mg/L. The phenomenon of feed back appeared when the concentration of Fe2+ exceeded 100 mg/L.