BioChem - DOS

Biohydrogen production from sugarcane bagasse hydrolysate by elephant dung: Effects of initial pH and substrate concentration

International journal of hydrogen energy

Fangkum, A.; Reungsang, A.

Pre-heated elephant dung was used as inoculum to produce hydrogen from sugarcane bagasse (SCB) hydrolysate. SCB was hydrolyzed by H<SUB>2</SUB>SO<SUB>4</SUB> or NaOH at various concentrations (0.25-5% volume) and reaction time of 60 min at 121 <SUP>o</SUP>C, 1.5 kg/cm<SUP>2</SUP> in the autoclave. The optimal condition for the pretreatment was obtained when SCB was hydrolyzed by H<SUB>2</SUB>SO<SUB>4</SUB> at 1% volume which yielded 11.28 g/L of total sugar (1.46 g glucose/L; 9.10 g xylose/L; 0.72 g arabinose/L). The maximum hydrogen yield of 0.84 mol H<SUB>2</SUB>/mol total sugar and the hydrogen production rate of 109.55 mL H<SUB>2</SUB>/L day were obtained at the initial pH 6.5 and initial total sugar concentration 10 g/L. Hydrogen-producing bacterium (Clostridium pasteurianum) and non hydrogen-producing bacterium (Flavobacterium sp.) were dominating species in the elephant dung and in hydrogen fermentation broth. Sporolactobacillus sp. was found to be responsible for a low hydrogen yield obtained.

2011

Pergamon Press ; Elsevier Science Ltd

0360-3199

1879-3487

36

14

pp.8687-8696

10.1016/j.ijhydene.2010.05.119

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART56514930

Bio-hydrogen; Sugarcane bagasse hydrolysate; Elephant dung