BioChem - DOS

Evaluation of biobutanol production from non-pretreated rice straw hydrolysate under non-sterile environmental conditions

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

Chen, W.H.; Chen, Y.C.; Lin, J.G.

The study aims to investigate a cost-effective approach to convert non-pretreated rice straw hydrolysate into biobutanol. The influences of the initial cell concentration and incubation temperature on biobutanol production were evaluated under both sterile and non-sterile conditions. Results indicate that 100% glucose utilization could be achieved for initial cell concentrations greater than 2100mg/L under both sterile and non-sterile conditions. Regression analyses resolve that under the sterile condition, the maximum butanol productivity of 1.45g/L/d was projected at 1.96g/L of cells and 32.3<SUP>o</SUP>C, while the maximum butanol yield of 0.22g/g was predicted at 2.01g/L of cells and 26.3<SUP>o</SUP>C. These two maximum values could not be projected by the regression analyses for the non-sterile condition. However, this study confirms that a high initial cell concentration of Clostridium saccharoperbutylacetonicum N1-4 can minimize interference from other microbes so that non-sterile biobutanol production is comparable to sterile biobutanol production.

2013

Elsevier Applied Science

0960-8524

135

pp.262-268

10.1016/j.biortech.2012.10.140

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART65836462

Fermentation; Biofuels; Butanol; Fermentable sugars; Rice straw