棉籽壳木质素提取工艺的初步研究  

Preliminary Study on Extraction Process of Lignin from Cotton Seed Hulls

作　　者：田维亮[1] 葛振红[1] 孙辉[1] 

机构地区：[1]塔里木大学生命科学学院,新疆阿拉尔市843300

出　　处：《作物杂志》2013年第2期130-133,共4页Crops

基　　金：北京化工大学化工资源有效利用国家重点实验室开放课题(CRE-2012-C-105);塔里木大学校长基金(TDZKSS201204)

摘　　要：棉籽壳是我国棉产区的大量副产物,是极有开发价值的资源,介绍了棉籽壳的研究现状,阐述木质素提取分离的方法,通过预处理分离棉籽壳中半纤维素后,采用高沸醇溶剂法制备木质素,对棉籽壳木质素的提取工艺进行了初步研究,结果表明:反应温度215℃,高沸醇(乙二醇)浓度80%,反应时间为2h,料液比为1∶8,木质素收率可达到18.64%,高沸醇溶剂可以循环利用。A considerable amount of by-product from cotton seed hulls are produced in cotton-producing areas of China which is of great developmental potential resource. Researches of cotton seed shell were introduced and meth- ods of extraction and separation of lignin were summarized in this paper. The extraction method was： after hemicel- luloses of cotton seed shell was separated, preparation of lignin using high boiling solvent was studied. The results showed that the optimum conditions were： reaction temperature was at 215~C, ethylene glycol concentration was 80% ;reaction time was 2h, and ratio of material to liquid was 1： 8;the yield of lignin was 18.64% ;the high boiling solvent （HBS） could be recycled.

关 键 词：棉籽壳 木质素 高沸醇 提取工艺 

分 类 号：TQ351.0[化学工程]