RESUMO
The influence factors for hydrogen production using photosynthetic bacteria group were studied. The effects of carbon sources, nitrogen sources, carbon concentration, nitrogen concentration, initial pH value, illumination mode and inoculation amount on hydrogen production were investigated by experiment of single factor and orthogonal experiment. The optimum process conditions were as follows: the best bacteria group was number 3, the glucose was carbon source and concentration of carbon source was 3 g/L; the urea was nitrogen source and concentration of nitrogen source was 9 g/L; the inoculation amount was 10%; initial pH value was 8.5; the illumination mode was 12 h light and 12 h dark alternation; incubation temperature was 30?C. The main factors affecting hydrogen production were strain, carbon sources, carbon source concentration and nitrogen suorces.