生物加工过程2018，Vol.16Issue(3)：35-40,6.DOI:10.3969/j.issn.1672-3678.2018.03.005
微生物集群效应的固定化酵母生产燃料乙醇
Production of fuel ethanol by immobilized yeast based on microbial cluster effect
摘要
Abstract
Modified fibrous materials was used as yeast immobilization carrier for ethanol fermentation,and effects of temperature, initial pH and circulation on the immobilized yeast fermentation in a 1-m3 fermentation tank were analyzed. The starch utilization rate increased to 86. 7％ and cereal consumption reduced to 2. 89 t for 1 t ethanol production at temperature of 34 ℃,initial pH of 4. 4,and circulating volume of 2. 0 m3/h. We further carried out the scaling-up experiment of 30 tons to simulate industrial production under the optimal process condition, which showed that starch conversion rate and cereal consumption were 85. 8％ and 2. 93 t per ton ethanol, respectively. Under the condition of high concentration of sugar, alcohol degrees reached 15. 3％( V/V ) , high concentration alcohol fermentation was obtained; corn fermentation also achieved long-term, stable fermentation, and meets the need of industrial fermentation. The results of laboratory scale experiment and pilot scale experiments show the surface immobilized yeast cell fermentation has potential for industrial application.关键词
固定化酵母/集群效应/循环量/高浓度发酵/燃料乙醇Key words
immobilized yeast/cluster effect/circulation quantity/high gravity fermentation/bio-ethanol分类
生物科学引用本文复制引用
罗虎,刘庆国,陈勇,孙振江,李永恒,许旺发..微生物集群效应的固定化酵母生产燃料乙醇[J].生物加工过程,2018,16(3):35-40,6.基金项目
广西科学研究与技术开发计划重大专项(桂科重1598004-1) （桂科重1598004-1）
