华南农业大学学报Issue(4)：103-108,6.
用于乙醇生产的‘热研4号’王草石灰预处理条件优化研究
Lime pretreatment optimization of Pennisetum purpureum × P.americanum cv.Reyan No.4 for ethanol production
摘要
Abstract
Objective] The pretreatment of Pennisetum purpureum ×P.americanum cv.Reyan No.4 was studied with lime to improve the conversion rate for ethanol production .[Method] The effects of pretreat-ment time , temperature , the lime dosage , and solid-to-liquid ratio as well as the orthogonal optimization test on the composition and the following enzymatic hydrolysis of ‘Reyan No.4’ were investigated.[Re-sult and conclusion] The optimal pretreatment conditions were as follows:pretreatment time 3 h, temper-ature 125℃, solid-to-liquid ratio 1∶12 ( g· mL-1 ) and the lime dosage of material 0.15 g· g-1 .Under the optimal condition, dry mass loss was 28.1% in lime pretreatment, and the removal rates of lignin, hemicellulose and cellulose were 65.4%, 37.5%, 6.1%, respectively .The yields of hemicellulose , cellulose and total residue were 45.5%, 85.7%, 55.2%, respectively; in the following enzymatic hy-drolysis, they increased 18.1 times, 4.5 times and 4.4 times, respectively, compared with those of un-treated ‘Reyan No.4’ .The primary factors influencing enzymatic hydrolysis yield were temperature and time, followed by lime dosage and solid-to-liquid ratio.关键词
‘热研4号’王草/石灰/预处理/乙醇生产Key words
Pennisetum purpureum ×P.americanum cv.Reyan No.4/lime/pretreatment/ethanol pro-duction分类
化学化工引用本文复制引用
高瑞芳,张腾飞,张建国..用于乙醇生产的‘热研4号’王草石灰预处理条件优化研究[J].华南农业大学学报,2014,(4):103-108,6.基金项目
“十二五”国家科技支撑计划 （）
