碱法制浆造纸黑液中提取木质素的研究进展

Research Progress of Lignin Extraction from Black Liquor of Alkaline Pulping and Papermaking

碱法制浆造纸黑液中,木质素约占黑液总量的25%~35%,是造纸废液发臭和水体污染的主要成分。研究表明,木质素和半纤维素通过酯化、塑化、接枝聚合等化学技术改性,可作为催化剂应用到化工产品的开发与应用中。木质素作为可再生的天然高分子纤维类化合物,其开发与利用对经济的发展和环境的保护都有十分重要意义。

In the black liquor of alkaline pulp and paper making,lignin accounts for about 25%~35%of the total black liquor.It is the main component of papermaking waste liquor odor and water pollution.The research shows that lignin and hemicellulose can be used as catalysts in the development and application of chemical products through chemical technologies such as esterification,plasticization and graft polymerization.Lignin,as a renewable natural polymer fiber compound,its development and utilization are of great significance to economic development and environmental protection.