中国生物工程杂志

The effect of initial substrate concentration on the growth, metabolic activities of Photosynthetic bacteria (PSB) in the process of hydrogen production was studied in the experiment. The experiential formula on the effect of initial substrate concentration on the specific growth rate, specific substrate consumption rate and specific hydrogen production rate of PSB were developed based on Monod model. The predicted results of model which indicated the law of the effect of initial substrate concentration on the growth, metabolic activities and hydrogen production were consistent with the experimental data in growth phase of PSB. The research results indicated that the optimal substrate concentration in the process of growth, metabolism and hydrogen production was 50 mmol/L, when the initial substrate concentration was under or hyper 50 mmol/Lthe activation of PSB was affected, and indicated that initial substrate concentration had little effect on the specific substrate consumption rate.