BioChem - DOS

Integration of first and second generation biofuels: Fermentative hydrogen production from wheat grain and straw

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Panagiotopoulos, I.A.; Bakker, R.R.; de Vrije, T.; Claassen, P.A.M.; Koukios, E.G.

Integrating of lignocellulose-based and starch-rich biomass-based hydrogen production was investigated by mixing wheat straw hydrolysate with a wheat grain hydrolysate for improved fermentation. Enzymatic pretreatment and hydrolysis of wheat grains led to a hydrolysate with a sugar concentration of 93.4g/L, while dilute-acid pretreatment and enzymatic hydrolysis of wheat straw led to a hydrolysate with sugar concentration 23.0g/L. Wheat grain hydrolysate was not suitable for hydrogen production by the extreme thermophilic bacterium Caldicellulosiruptor saccharolyticus at glucose concentrations of 10g/L or higher, and wheat straw hydrolysate showed good fermentability at total sugar concentrations of up to 10g/L. The mixed hydrolysates showed good fermentability at the highest tested sugar concentration of 20g/L, with a hydrogen production of 82-97% of that of the control with pure sugars. Mixing wheat grain hydrolysate with wheat straw hydrolysate would be beneficial for fermentative hydrogen production in a biorefinery.

2013

Elsevier Applied Science

0960-8524

128

pp.345-350

10.1016/j.biortech.2012.09.083

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART65418600

Biohydrogen; Biorefinery; Wheat straw; Wheat grains; Caldicellulosiruptor saccharolyticus