有机溶剂法提取松木木屑中木质素的研究  

Research on extraction of pine wood lignin with organic solvent

作　　者：凌敏[1] 廖有为[1] 李茂政[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《应用化工》2009年第7期1030-1032,共3页Applied Chemical Industry

摘　　要：探讨了以有机溶剂为提取剂,在微波辐射和超声波辅助的条件下提取松木木屑中的木质素,得出了最佳工艺条件:微波辐射功率540 W,时间50 min,超声波20 min,提取剂为甲基异丁基甲酮和95%乙醇(体积比2∶1)的混合液,木屑与提取剂之比为1∶10(g/mL),少量H2SO4作催化剂。结果表明,该方法木质素的提取率为33.7%,高效且时间短,提取剂可重复使用,无废物排放,具有节能减排的意义。It was discussed that the extracting of lignin from pine wood chips under the conditions of microwave radiation and ultrasound-assisted with organic solvents as the extraction agent. It was obtained the optimum conditions from the test： microwave radiation power 540 W and duration 50 min,ultrasonic wave duration 20 min, the organic solvents were the mixture of methyl isobutyl ketone and 95 % ethanol （ volume ratio 2：1 ） ,the ratio of pine sawdust to organic solvent was 1 ： 10 （g/mL） ,and a small amount of H2SO4 as catalyst were added. Under this condition, lignin extraction rate reached 33.7%, extraction agent could be reused and non-waste emission was carried out.

关 键 词：木质素 微波辐射 超声波 有机溶剂法 提取 

分 类 号：TQ424.19[化学工程]