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玉米芯经酸-超声波强化碱耦合预处理制取燃料乙醇

严青 仲兆平 张茜芸

严青, 仲兆平, 张茜芸. 玉米芯经酸-超声波强化碱耦合预处理制取燃料乙醇[J]. 环境科学研究, 2012, 25(9): 1011-1015.
引用本文: 严青, 仲兆平, 张茜芸. 玉米芯经酸-超声波强化碱耦合预处理制取燃料乙醇[J]. 环境科学研究, 2012, 25(9): 1011-1015.
YAN Qing, ZHONG Zhao-ping, ZHANG Xi-yun. Production of Bio-Ethanol from Corncobs by Acid-Prior-to-Ultrasound Strengthened Alkali Pretreatment[J]. Research of Environmental Sciences, 2012, 25(9): 1011-1015.
Citation: YAN Qing, ZHONG Zhao-ping, ZHANG Xi-yun. Production of Bio-Ethanol from Corncobs by Acid-Prior-to-Ultrasound Strengthened Alkali Pretreatment[J]. Research of Environmental Sciences, 2012, 25(9): 1011-1015.

玉米芯经酸-超声波强化碱耦合预处理制取燃料乙醇

基金项目: 国家重点基础研究发展计划(973)项目(2011CB201505)

Production of Bio-Ethanol from Corncobs by Acid-Prior-to-Ultrasound Strengthened Alkali Pretreatment

  • 摘要: 为研究酸碱耦合和超声波对玉米芯预处理效果的影响,通过成分分析、GC-MS分析、还原糖测定、X射线衍射和Jade软件的计算比较预处理后玉米芯的组成形态、结晶结构特点和酶解得率变化,以获得最佳的预处理条件. 结果表明:酸处理后的滤渣继续进行碱处理时,w(半纤维素)和w(木质素)均可降至14%左右;若在碱处理的同时进行超声波强化,当超声波功率为120 W,作用时间为5 min时,w(木质素)可进一步降至7.86%,酶解得率从34.09%升至37.32%,玉米芯的结晶度从59.79%降至57.46%. 以玉米芯为原料制取燃料乙醇的最佳预处理方式为“酸-超声波强化碱”耦合预处理.

     

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出版历程
  • 收稿日期:  2012-02-09
  • 修回日期:  2012-06-24
  • 刊出日期:  2012-09-25

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