BioChem - DOS

A consolidated bio-processing of ethanol from cassava pulp accompanied by hydrogen production

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

Li, P.; Zhu, M.

A biphasic fermentation approach was undertaken for the production of ethanol and hydrogen from cassava pulp. The glucose generated by co-culture of Clostridium thermocellum and Thermoanaerobacterium aotearoense was 13.65+/-0.45gL<SUP>-1</SUP>, which was 1.75 and 1.17-fold greater than that produced by mono-cultures of C. thermocellum and T. aotearoense, respectively. The accumulated glucose could be utilised rapidly by subsequently inoculated Saccharomyces cerevisiae. An inoculum ratio of 1:1, a thermophilic fermentation of 84h, and a pulp concentration of 4% proved optimal for ethanol production, fermentation efficiency, and productivity. With these conditions, the ethanol level reached 8.83+/-0.31gL<SUP>-1</SUP> with a fermentation efficiency of 64.95+/-2.71%. Hydrogen production of 4.06mmol by the co-culture system was 1.54 and 2.09-fold greater than that produced by mono-cultures of C. thermocellum and T. aotearoense, respectively. This sequential co-culture approach provided a consolidated bio-processing means to produce ethanol and hydrogen from cassava pulp.

2011

Elsevier Applied Science

0960-8524

102

22

pp.10471-10479

10.1016/j.biortech.2011.08.134

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART57757358

Cassava pulp; Ethanol; Hydrogen; Consolidated bio-processing; Co-culture