BioChem - DOS

Combination of hydrogen fermentation and methanogenesis to enhance energy conversion efficiency from trehalose

Energy : technologies, resources, reserves, demands, impact, conservation, management, policy

Xia, A.; Cheng, J.; Lin, R.; Ding, L.; Zhou, J.; Cen, K.

Trehalose was pretreated by microwave heating with dilute acid to improve glucose yield and hydrogen production during dark-fermentation. An optimal glucose yield of 0.95 +/- 0.08 g/g-trehalose was obtained when trehalose was pretreated by microwave heating with 1% dilute H<SUB>2</SUB>SO<SUB>4</SUB> for 25 min at 120 <SUP>o</SUP>C. The hydrolyzed trehalose was inoculated with HPB (hydrogen-producing bacteria) to produce hydrogen during dark-fermentation. The residual solution of dark-fermentation was reused by PSB (photosynthetic bacteria) during photo-fermentation. The residual solution of photo-fermentation was reused by MPB (methane-producing bacteria) during methanogenesis. The maximum yields of hydrogen and methane were 731.3 +/- 33.6 ml/g-trehalose and 116.9 +/- 4.3 ml/g-trehalose. The sequential generation of hydrogen and methane from trehalose remarkably enhanced the energy conversion efficiency from 47.2 +/- 2.2% in hydrogen fermentation to 72.2 +/- 3.1% in combined hydrogen fermentation and methanogenesis.

2013

Pergamon Press ; Elsevier Science Ltd

0360-5442

1873-6785

55

pp.631-637

10.1016/j.energy.2013.03.061

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART66081551

Trehalose; Dark- and photo-fermentation; Methanogenesis; Hydrogen; Microwave heating