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Adding sweet sorghum juice into current dry-grind ethanol process for improving ethanol yields and water efficiency

International Journal of Agricultural and Biological Engineering 2015年第2期8卷 97-103页

作者： Nana B Appiah-Nkansah Kaelin Saul William L Rooney Donghai Wang IGERT Trainee in Biorefining Kansas State UniversityManhattan KS 66506USA Department of Biological and Agricultural Engineering Kansas State UniversityManhattanKS 66506USA Department of Soil and Crop Science Texas A&M UniversityCollege StationTX 77843USA

Sweet sorghum is a promising energy crop due to its low fertilizer and water requirements,short growth period,and high biomass ***,the challenge for sweet sorghum as a feedstock for ethanol production is its short harvest period and the extreme instability of its juice,both of which make achieving a year-round production process *** way to solve this challenge and to meet the growing demand of bio-renewable ethanol is to incorporate sweet sorghum juice into the current dry-grind ethanol *** the dry-grind process,the whole grain kernel is milled and fermented to produce *** this study,sweet sorghum juice with varying grain sorghum flour contents was liquefied,saccharified,fermented,and distilled to produce *** yield from sweet sorghum juice with the optimum grain sorghum flour loading was about 28% higher than that from the conventional ethanol *** hydrolysis with this process could be reduced by 30 *** fermentation performance of sweet sorghum juice with grain flour using a raw starch hydrolyzing enzyme was also investigated,and ethanol yield was about 21% higher than that from the conventional *** innovative technology enabling ethanol production from sweet sorghum juice could improve ethanol yield,save energy,and significantly decrease water use in the current dry-grind ethanol process.

关键词： sweet sorghum biomass ethanol yield hydrolyzing time conversion efficiency

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