BioChem - DOS

Biohydrogen production evaluation from rice straw hydrolysate by concentrated acid pre-treatment in both batch and continuous systems

International journal of hydrogen energy

Liu, C.M.; Chu, C.Y.; Lee, W.Y.; Li, Y.C.; Wu, S.Y.; Chou, Y.P.

Acid treated rice straw hydrolysate was used as a substrate hydrogen production. Concentrated sulphuric acid (55%) was used to completely dissolve the rice straw cellulose at temperature of 40 <SUP>o</SUP>C. After hydrolysis of rice straw cellulose, calcium hydroxide was used to remove sulphate ions. Biohydrogen production was evaluated under different initial pH and substrate concentration conditions at a temperature of 37 <SUP>o</SUP>C in a batch mode. The maximum values of hydrogen yield and accumulation of hydrogen were 0.44 mol H<SUB>2</SUB>/mol T-sugar and 97.30 +/- 0.17 mL with substrate utilization of 81.55% in a batch mode. A mixture of food industry wastewater with rice straw hydrolysate was used as substrate in a continuous mode for the biohydrogen production potential test in this study. The average hydrogen production yield of 0.69 mol H<SUB>2</SUB>/mol T-sugar was 1.5 times higher than that in the batch mode while the hydrogen production rate was 10 +/- 1.17 L/d/L. The presence of bacteria Clostridium pasteurianum which favours the production of hydrogen from of acetic acid and butyric acid was determined by DGGE.

2013

Pergamon Press ; Elsevier Science Ltd

0360-3199

1879-3487

38

35

pp.15823-15829

10.1016/j.ijhydene.2013.07.055

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART67346258

Metabolites; Hydrolysate; Rice straw; Biohydrogen production; Microorganism