An effective approach to improve ethanol productivity by simultaneous saccharification and fermentation of rice straw. Issue 10 (9th August 2018)

• Record Type: Journal Article
• Authors: Xie, Taiping; Xu, Longjun; Liu, Chenglun; Bi, Zhiming
• Is Part Of: International journal of green energy. Volume 15:Issue 10(2018)
• Page Start: 545
• Page End: 549
• Publication Date: 2018-08-09
• Subjects: Cellulose liquefaction -- Fe2+ -- fuel ethanol productivity -- rice straw -- SSF (simultaneous saccharification and fermentation); Power resources -- Research -- Periodicals; Energy industries -- Periodicals; Energy development -- Periodicals; 333.79
• DOI: 10.1080/15435075.2018.1489251
• Languages: English
• ISSNs: 1543-5075

Abstract

ABSTRACT: Fuel ethanol was produced using rice straw with the simultaneous saccharification and fermentation (SSF) method. The influence of cellulose liquefaction pretreatment and Fe 2+ quantity on ethanol productivity was investigated in detail. At the same time, the optimized conditions including fermentation temperature, Fe 2+ amount, yeast inoculation quantity, and the inoculated cellulose enzyme dosage in the SSF process were systematically investigated by analyzing fuel ethanol yield. The result indicated that fuel ethanol yield was 0.319 g per gram rice straw by SSF approach when appropriate amount of Fe 2+ was added into the reaction system. The optimal technology parameters were: fermenting temperature of 36°C, Fe 2+ amount of 4 mg · g −1, inoculating proportion of 20%, cellulose enzyme of 20 IU · g −1, and Pachysolen tannophilu / saecharomyces cerevisiae of 1:2 ratio. The ethanol yield under the best conditions was larger than that of the control group. We hope that this research can facilitate to achieve large-scale comprehensive utilization for rice straw.