壁载纤维素酶微反应器内传递及转化特性
Transport and Conversion Characteristics in a Microreactor Loaded With Cellulase
林凯 1夏奡 1黄云 1朱贤青 1朱恂 1廖强1
作者信息
- 1. 重庆大学低品位能源利用技术及系统教育部重点实验室,重庆 400030;重庆大学工程热物理研究所,重庆 400030
- 折叠
摘要
壁载纤维素酶微反应器能够实现纤维素类生物质水解制备葡萄糖,为后续微生物能源转化提供原料.本文对壁载纤维素酶微反应器内羧甲基纤维素模型化合物的酶解糖化进行了实验与模拟研究,获得了内表面结构对微反应器物质传递及酶解反应的影响规律.模拟结果表明,相较于等边三角形、半圆形等内表面结构,设置高矩形结构对微反应器内葡萄糖生产的促进显著.此外,具有高矩形结构的微反应器单位压降下的出口葡萄糖浓度最高,有利于实际应用.相较于增加表面结构尺寸,减小结构间距具有更好的强化效果.在最适表面结构参数下,对于不同黏度的酶解反应,出口平均葡萄糖浓度的提升率均高于7.0％.
Abstract
The microreactor loaded with cellulase can efficiently convert cellulosic biomass to pre-pare glucose and provide feedstock for subsequent microbial energy conversion.In this paper,ex-perimental and simulation studies on the enzymatic saccharification of CMC were conducted in a microreactor loaded with cellulase to obtain the influence of the inner surface structure on the mass transfer and enzymatic reaction.The simulation results showed that compared to the inner surface structures such as equilateral triangles and semicircles,the setting of a high rectangular structure promotes glucose production in the microreactor more significantly.Besides,the microreactor with high rectangular structures can obtain the highest outlet glucose concentration per unit pressure drop,which is conducive to practical application.Compared with increasing the surface structure size,decreasing the structure spacing has a better enhancement effect.Under the optimal surface structure parameters,the outlet average glucose concentration enhancement rates were all higher than 7.0％for the enzymatic reactions at different viscosities.
关键词
微反应器/物质传递/壁载酶催化/表面结构/数值模拟Key words
microreactor/mass transfer/catalysis by loaded enzyme/surface structure/numerical simulation引用本文复制引用
基金项目
国家自然科学基金重点项目(51836001)
国家自然科学基金创新研究群体项目(52021004)
国家自然科学基金优秀青年科学基金(52022015)
出版年
2024
NETL
NSTL
万方数据