• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Annual International Meeting of the American Society of Agricultural and Biological Engineers >Pretreatment of Corn Stover for Enzymatic Saccharification Improvement by Using the Combination of Alkaline Reagents at Mild Temperatures
【24h】

Pretreatment of Corn Stover for Enzymatic Saccharification Improvement by Using the Combination of Alkaline Reagents at Mild Temperatures

机译：通过使用温度温度下的碱性试剂的组合来预处理玉米秸秆的糖化糖化改善

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

For ethanol production from cellulosic biomass, an effective pretreatment step is required to reduce biomass recalcitrance by altering its chemical and structural features. Sodium hydroxide (NaOH) and lime (Cap) are two alkali reagents which have beenextensively studied in chemical pretreatment of lignocellulosic biomass. However, high temperatures and pressures are routinely applied to effectively improve the digestibility of lignocellulose, which lead to the high cost of pretreatment In previous studies, distinct properties of NaOH and CaO make it possible to manipulate these two alkali reagents to let them work together in lignocellulose pretreatment to reduce temperature, chemical loading, and residence time requirements. Com Stover is considered as a potential feedstock for sugar production due to its great amount and easy access in the United States. In this research, NaOH and CaO are used together to pretreat corn stover at 50°C. Three pretreatment parameters are studied: residence time, NaOH concentration, and CaO loading. The pretreatments were e valuated based on the sugar productions in the subsequent enzymatic hydrolysis. At recommended pretreatment conditions (9h, 0.75% NaOH, 0.05 g CaO g~(-1) raw biomass), the total reducing sugaryields was 544.0mg g~(-1) raw biomass, at an overall carbohydrate conversion of 77.0%. However, compared with pretreatment at recommended conditions at room temperature, pretreatment at 50 °C may result in more energy and chemical input.
机译：对于从纤维素生物质产生的乙醇产生，需要通过改变其化学和结构特征来减少生物量克拉累积的有效预处理步骤。氢氧化钠（NaOH）和石灰（盖子）是两种碱性试剂，其在木质纤维素生物质的化学预处理中已经过度研究。然而，常规应用高温和压力以有效提高木质纤维素的消化率，这导致先前研究中预处理的高成本，NaOH和Cao的不同性质使得可以操纵这两种碱性试剂，让它们共同地工作木质纤维素预处理以降低温度，化学加载和停留时间要求。 COM Stope被认为是糖生产的潜在原料，因为它在美国的大量和轻松访问。在本研究中，NaOH和CaO在50℃下一起使用预期玉米秸秆。研究了三个预处理参数：停留时间，NaOH浓度和Cao负载。预处理是基于随后的酶水解中的糖制造的E值。在推荐的预处理条件下（9h，0.75％NaOH，0.05g CaOg〜（-1）原料生物量），总还原素屑为544.0mg g〜（-1）原料生物质，总碳水化合物转化为77.0％。但是，与在室温下推荐条件下的预处理相比，50℃的预处理可能导致更多的能量和化学输入。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号