BioChem - DOS

Cogeneration of hydrogen and methane from Arthrospira maxima biomass with bacteria domestication and enzymatic hydrolysis

International journal of hydrogen energy

Cheng, J.; Zhang, M.; Song, W.; Xia, A.; Zhou, J.; Cen, K.

The energy conversion efficiency in hydrogen and methane cogeneration from Arthrospira maxima biomass by two-phase fermentation is improved with bacteria domestication and enzymatic hydrolysis. The A. maxima biomass (dried weight) can theoretically cogenerate hydrogen and methane yields of 318 ml/g and 262 ml/g, which dramatically increases the theoretical energy conversion efficiency from 16.6% in hydrogen only production to 61.9%. The experimental hydrogen yield is increased from 49.7 ml/g to 64.3 ml/g, when the hydrogenogens community is domesticated with A. maxima biomass as carbon source. The hydrogen yield is further increased to 78.7 ml/g when A. maxima biomass is hydrolyzed with glucoamylase, which gives an energy conversion efficiency of 4.1% in hydrogen only production. The soluble metabolite byproducts from the first hydrogen-producing phase are reutilized by methanogens to produce methane of 109.5-145.5 ml/g in the second phase. The cogeneration of hydrogen and methane from A. maxima biomass markedly increases the experimental energy conversion efficiency to 27.7%.

2011

Pergamon Press ; Elsevier Science Ltd

0360-3199

1879-3487

36

2

pp.1474-1481

10.1016/j.ijhydene.2010.11.009

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART55267979

Bacteria domestication; Enzymolysis; Arthrospira maxima; Hydrogen; Methane; Fermentation