氨水预处理玉米秸秆糖化工艺条件优化  

Optimization of Saccharification of Corn Stalks by Ammonia-Pretreatment

作　　者：李静[1,2] 晏飞来[2] 徐静静[2] 刘新[2] 金春义[2] 林胜兰[2] 杨力[2] 马雪娇[2] 

机构地区：[1]重庆水利电力职业技术学院,重庆402160 [2]西南大学资源环境学院,重庆400716

出　　处：《重庆师范大学学报（自然科学版）》2011年第5期77-80,共4页Journal of Chongqing Normal University:Natural Science

摘　　要：采用氨水预处理的单因素与正交试验,研究氨水浓度、时间、温度、基质浓度和粒径对玉米秸秆糖化预处理的影响。结果表明:影响氨预处理玉米秸秆的还原糖得率的主要因素是粒径,而影响木质素去除率的主要因素是氨水浓度、浸泡时间和浸泡温度,其最优工艺条件为氨水浓度15%,时间39 h,温度40℃,基质浓度162.5 g.L-1,粒径0.5 mm。在此条件下的预处理还原糖得率为3.23%,木质素去除率为61.20%。The effects of ammonia concentration,processing time,temperature,substrate concentration,and stalk diameter by ammonia-pretreatment on the saccharification of corn stalks using single factor design and orthogonal design were investigated.The results indicated that the main effect factor on the reducing sugar yield was corn stalks size and the main effect factors on the lignin removal rate was ammonia concentration,time and temperature.The optimum conditions were ammonia concentration 15%,time is 39 h,temperature is 40 ℃,substrate concentration is 162.5 g·L-1,and stalk diameter is 0.5 mm with the 3.23% reducing sugar yield and 61.20% lignin removal rate.

关 键 词：玉米秸秆 氨水 还原糖得率 木质素去除率 

分 类 号：N[自然科学总论]