首页 | 本学科首页   官方微博 | 高级检索  
     

玉米芯HNO_3/HCl预处理及同步糖化发酵制乙醇
引用本文:刘晓娟,吴晓斌,郑文耀,张毅民. 玉米芯HNO_3/HCl预处理及同步糖化发酵制乙醇[J]. 化学工业与工程, 2013, 30(5): 16-20,41
作者姓名:刘晓娟  吴晓斌  郑文耀  张毅民
作者单位:1. 绿色合成与转化教育部实验室,天津大学化工学院,天津300072
2. 中国乐凯胶片集团公司,河北保定,071054
摘    要:采用正交实验对玉米芯在2%HNO3/HCl中的水解条件进行优化,得出最适宜的预处理条件为:反应温度120℃,反应时间30 min,固含量15%。将经过预处理的玉米芯作为同步糖化发酵的底物,采用单因素实验考查影响发酵的因素,结果表明:在底物浓度为150 g/L、37℃、pH值为5.0、纤维素酶用量为30 FPU/g底物、酵母接种量10%、发酵周期72 h时,乙醇的产率可达到76.8%,此时乙醇溶液的浓度为41.4 g/L。

关 键 词:正交实验  玉米芯  HNO3  HCl  同步糖化发酵  乙醇

Pretreatment of Corn Cob with HNO3/HCl and Ethanol Production by Simultaneous Saccrification and Fermentation
LIU Xiao-juan,WU Xiao-bin,ZHENG Wen-yao,ZHANG Yi-min. Pretreatment of Corn Cob with HNO3/HCl and Ethanol Production by Simultaneous Saccrification and Fermentation[J]. Chemical Industry and Engineering, 2013, 30(5): 16-20,41
Authors:LIU Xiao-juan  WU Xiao-bin  ZHENG Wen-yao  ZHANG Yi-min
Affiliation:1*(1.Key laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering and Technology, Tianjin University,Tianjin 300072,China;2.China Luckyfilm Group Co.,Baoding 071054,China)
Abstract:HNO3/HCl was used to hydrolyze corn cob for sugar releasing.The optimizum conditions were obtained by using orthogonal experiment,with the reaction temperature of 120 ℃,reaction time of 30 min and solid loading of 15%.Taking the pretreated corn cob as substrate,ethanol was produced by simultaneous saccrification and fermentation and the effects on fermentation were investigated.The results showed that the suitable fermentation conditions were reaction temperature of 37 ℃,pH 5.0,enzyme loading of 30 FPU/g substrate,yeast concentration of 10%(w/v),fermentation time of 72 h and with the solid loading of 150 g/L,the final concentration of ethanol was 41.4 g/L,which was 76.8% of the theoretical yield.
Keywords:orthogonal experiment  corn cob  HNO3/HCl  simultaneous saccrification and fermentation  ethanol
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号