在蒸汽爆炸预处理中的催化剂循环系统,用于从麦中生产高产量的二氧化二氧化糖
Myeong Rok Ahn1, Song Wang2, Jonghwa Kim3
1Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology (KRICT), 406-30, Jongga-ro, Jung-gu, Ulsan 44429, Republic of Korea; Department of Agriculture, Forestry, and Bioresources, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
Carbohydrate polymers
|July 24, 2024
概括
这项研究引入了一个闭环蒸汽爆炸预处理,使用回收的挥发物作为液化催化剂 (LFC). 这种新的方法显著减少了反应时间,并提高了用于 prebiottic 应用的有价值的寡合糖的产量.
科学领域:
- 生物质预处理 生物质预处理
- 催化剂是一种催化剂.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 蒸汽爆炸是一种常见的基纤维素生物质预处理方法.
- 在生物质预处理中回收催化剂可以提高工艺经济性和可持续性.
- 在蒸汽爆炸过程中产生的挥发物含有有价值的化合物,如酸和furfural.
研究的目的:
- 开发和评估使用回收挥发物作为液化催化剂 (LFC) 的闭环预处理过程.
- 调查LFC在半纤维素水解中的效率及其对产品产量的影响.
- 通过计算模拟来评估催化剂循环系统的可行性和潜在好处.
主要方法:
- 蒸汽爆炸预处理与回收和挥发物质的液化.
- 使用液化催化剂 (LFC) 的半纤维素水解.
- 使用Aspen Plus进行系统分析和验证的计算模拟.
主要成果:
- 在170°C下,LFC显著减少了半纤维素水解停留时间,从90分钟减少到30分钟,达到80%的转化率.
- 该工艺产生了富含较低分子量寡合糖的化物,适合于前生物应用.
- 计算模拟预测了转换产量的1.5倍改善和低分子量寡合物的1.6倍增加的低分子量寡合物的产量与循环系统.
结论:
- 使用LFC的闭环预处理系统对于生物质加工是有效的.
- 将酸和furfural作为LFC回收利用可以增强半纤维素水解,并产生有价值的益生菌前体.
- 拟议的催化剂循环系统显示了提高生物质预处理效率和可持续性的巨大潜力.
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