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Research on the Pretreatment and Purification of Moso Bamboo Mechanical Pulp with Deep Eutectic Solvents
Received:June 26, 2025  Revised:July 10, 2025
DOI：10.11980/j.issn.0254-508X.2025.11.013
Key Words:deep eutectic solvent  Moso bamboo  mechanical pulp  purified  pretreatment
Fund Project:湖北省教育厅青年基金项目（Q20231414、Q20241411）；湖北工业大学绿色工业科技引领计划项目（XJ2024000301）。
Author NameAffiliationPostcode
XIE Junxian* School of Material Science and Chemical Engineering, Hubei University of Technology, Wuhan, Hubei Province, 430068 430068
CHEN Junjun School of Material Science and Chemical Engineering, Hubei University of Technology, Wuhan, Hubei Province, 430068 430068
ZHU Shiyun School of Material Science and Chemical Engineering, Hubei University of Technology, Wuhan, Hubei Province, 430068 430068
FENG Nianjie School of Material Science and Chemical Engineering, Hubei University of Technology, Wuhan, Hubei Province, 430068 430068
YANG Haitao* School of Material Science and Chemical Engineering, Hubei University of Technology, Wuhan, Hubei Province, 430068 430068
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Abstract:This study utilized Moso bamboo mechanical pulp as raw material and employed a deep eutectic solvent （DES） for pretreatment， and investigated the interactions between DES and hemicellulose/lignin under varying conditions to develop and optimize pretreatment parameters suitable for mechanical pulp. The pretreated bamboo pulp was further bleached using an alkali treatment process enhanced with sodium hypochlorite and hydrogen peroxide （H0-EP-H1）， investigating the effects of bleaching conditions on pulp properties. The results showed that moderately increasing the temperature and time of DES pretreatment enhanced the removal rates of lignin and hemicellulose while improving cellulose purity. However， excessively high temperatures and prolonged times caused cellulose degradation during DES pretreatment. Bleaching further removed lignin and hemicellulose， improving pulp properties. The final bleached pulp achieved a brightness of 90.2%， α-cellulose content of 93.47%， ash content of 0.23%， and a yield of 38.1%.
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