Enzymatic hydrolysis and fermentation of dilute acid pretreated cornstalk to biohydrogen

摘要

The coupling method of acid pretreatment and enzymatic hydrolysis of cornstalk for hydrogen production was investigated in this study. Experimental results showed that temperature, pH and enzyme loading all had an individual significant influence on soluble sugar yield and P_s. The optimum condition for soluble sugar was close to that for P_s. The maximum hydrogen yield from cornstalk by anaerobic mixed microflora was 209.8 ml/g-TVS on the optimum enzymatic hydrolysis condition which was 52°C of temperature, pH4.8 and 9.4 IU/g of enzyme loading.