A Study on Extraction of Softwood and Hardwood Chips Using Glycerol-Imidazole Eutectic Solvent

초록

This study examined whether lignin can be extracted from softwood and hardwood chips by the treatment of the deep eutectic solvent based on glycerol-imidazole (GI DES). In particular, the effects of DES treatment conditions including the reaction time and mixing ratio of water on the extraction efficiency and the recovered extractives contents were investigated. The results confirmed that the reaction time and mixing ratio of water during GI DES treatment of softwood and hardwood chips can affect on the recovered extractives content and extraction efficiency. The extraction efficiency for GI DES treatment without adding water (DES:water 100:0) was relatively higher than that with adding 10% water (DES:water 90:10). The extraction efficiency and the recovered extractives content of each wood chip increased as the reaction time increased from 2 hours to 6 hours. © 2023 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

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