摘要
预水解液是使用预水解硫酸盐法制备溶解浆生产过程中产生的废液,含有大量的半纤维素和少量木质素。预水解液中的半纤维素可以通过生物质精炼技术制备糠醛等高附加值产品,而木质素的存在会严重阻碍糠醛的制备,因此实现高效制备糠醛的前提是预水解液的纯化,尤其是木质素的去除。本文对木质纤维预水解液的纯化方法及糠醛制备过程中收率的影响因素进行了综述,详细阐述了吸附法、膜过滤法和絮凝法在预水解液纯化中的应用,探讨了催化剂和反应体系对糠醛制备过程中收率的影响。
The prehydrolysate is a waste liquid produced during the production of dissolved pulp via prehydrolyzed sulfate method,containing a large amount of hemicellulose and a small amount of lignin.The hemicellulose in the prehydrolysate can be prepared high value-added products such as furfural based on biomass refining technology,and the presence of lignin would seriously hinder the preparation of furfural.Thus the prerequisite for efficient preparation of furfural is the purification of the prehydrolysate,especially the removal of lignin.In this paper,the purification method of wood fiber prehydrolysate and the influencing factors of yield during furfural preparation were reviewed,the applications of adsorption method,membrane filtration method,and flocculation method in the purification of prehydrolysate were elaborated,and the effects of catalyst and reaction system on the yield during furfural preparation were discussed.
作者
刘潇笛
贾文超
王忠善
李长庚
张贺
石海强
LIU Xiaodi;JIA Wenchao;WANG Zhongshan;LI Changgeng;ZHANG He;SHI Haiqiang(The Key Lab of High Value Utilization of Botanical Resources of China Light Industry,Key Lab of Biomass Chemistry and Materials of Liaoning,College of Light Industry&Chemical Engineering,Dalian Polytechnic University,Dalian,Liaoning Province,116034)
出处
《中国造纸》
CAS
北大核心
2024年第1期28-37,共10页
China Pulp & Paper
基金
国家自然科学基金资助项目(31971608,22378036)
辽宁省“兴辽英才计划”科技创新领军人才计划(特聘教授)(XLYC2202009)。
关键词
预水解液
分离纯化
糠醛
高值化利用
prehydrolysate
separation and purification
furfural
high value utilization
