Statistical Optimization of Saccharification of Alkali Pretreated Wheat Straw for Bioethanol Production

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• 作者：Muhammad Irfan ; Umar Asghar ; Muhammad Nadeem…
• 关键词：Alkali pretreatment ; Wheat straw ; Saccharification ; Box–Behnken design ; Ethanol
• 刊名：Waste and Biomass Valorization
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：7
• 期：6
• 页码：1389-1396
• 全文大小：1,722 KB
• 刊物类别：Engineering
• 刊物主题：Engineering, general
  Environment
  Waste Management and Waste Technology
  Industrial Pollution Prevention
  Renewable and Green Energy
  Environmental Engineering
  
• 出版者：Springer Netherlands
• ISSN：1877-265X
• 卷排序：7

文摘

In this study saccharification of alkali treated wheat straw was optimized by Box–Behnken design using three variables at three levels. FTIR, XRD and Scanning electron microscopy were used to study the morphological and structural changes caused by pretreatment. A 23 factorial design was used for experiments and data was analyzed by second order polynomial regression model. Under optimized condition of 2 % wheat straw, 0.5 % enzyme concentration and 6 h of time period resulted in 40.15 % saccharification of wheat straw. The saccharified material was fermented with Saccharomyces cerevisiae which revealed that 96 h of fermentation period was best for maximum specific growth rate and specific ethanol yield.