초록
Anaerobic sequencing batch reactor (ASBR) process offers great potential for H<SUB>2</SUB> production from wastewaters. In this study, an ASBR was used at first time for enhanced continuous H<SUB>2</SUB> production from fungal pretreated cornstalk hydrolysate by Thermoanaerobacterium thermosaccharolyticum W16. The reactor was operated at different hydraulic retention times (HRTs) of 6, 12, 18, and 24 h by keeping the influent hydrolysate constant at 65 mmol sugars L<SUP>-1</SUP>. Results showed that increasing the HRT from 6 to 12 h led to the H<SUB>2</SUB> production rate increased from 6.7 to the maximum of 9.6 mmol H<SUB>2</SUB> L<SUP>-1</SUP> h<SUP>-1</SUP> and the substrate conversion reached 90.3%, although the H<SUB>2</SUB> yield remained at the same level of 1.7 mol H<SUB>2</SUB> mol<SUP>-1</SUP> substrate. Taking into account both H<SUB>2</SUB> production and substrate utilization efficiencies, the optimum HRT for continuous H<SUB>2</SUB> production via an ASBR was determined at 12 h. Compared with other continuous H<SUB>2</SUB> production processes, ASBR yield higher H<SUB>2</SUB> production at relatively lower HRT. ASBR is shown to be another promising process for continuous fermentative H<SUB>2</SUB> production from lignocellulosic biomass.