Faculty of Science, Chemical Engineering Department, University of Vigo (Campus Ourense), Polytechnical Building, As Lagoas, 32004 Ourense, Spain.
CINBIO, University of Vigo (Campus Lagoas-Marcosende), 36310 Vigo, Spain.
Int J Mol Sci. 2023 Aug 3;24(15):12404. doi: 10.3390/ijms241512404.
Cellulose is produced industrially by the kraft and sulfite processes. The evolution of these technologies in biorefineries is driven by the need to obtain greater added value through the efficient use of raw materials and energy. In this field, organosolv technologies (and within them, those using liquid phases made up of water and one partly miscible organic solvent, known as "biphasic fractionation" in reference to the number of liquid phases) represent an alternative that is receiving increasing interest. This study considers basic aspects of the composition of lignocellulosic materials, describes the fundamentals of industrial cellulose pulp production processes, introduces the organosolv methods, and comprehensively reviews published results on organosolv fractionation based on the use of media containing water and an immiscible solvent (1-butanol, 1-pentanol or 2-methyltetrahydrofuran). Special attention is devoted to aspects related to cellulose recovery and fractionation selectivity, measured through the amount and composition of the treated solids.
纤维素在工业上可通过 Kraft 和亚硫酸盐工艺生产。这些技术在生物精炼厂中的发展是由通过有效利用原材料和能源来获得更高附加值的需求所驱动的。在这个领域，有机溶剂处理技术（其中包括使用由水和一种部分混溶性有机溶剂组成的液相的技术，在提到液相数量时称为“两相分离”）是一种越来越受到关注的替代方法。本研究考虑了木质纤维素材料组成的基本方面，描述了工业纤维素纸浆生产工艺的基础，介绍了有机溶剂处理方法，并综合回顾了基于使用含有水和不混溶溶剂（1-丁醇、1-戊醇或 2-甲基四氢呋喃）的介质的有机溶剂分离的已发表结果。特别关注与纤维素回收和分馏选择性相关的方面，通过处理固体的量和组成来衡量。
