由甲壳素生产壳聚糖的废液制备双乙酸钠  

Preparation of Sodium Diacetate with the Waste Liquid Produced in Making Chitosan from Chitin

作　　者：蔡娟[1] 杨建男[2] 

机构地区：[1]南京工业大学理学院,江苏南京210009 [2]湛江师范学院化学系,广东湛江524048

出　　处：《广东化工》2007年第4期20-22,16,共4页Guangdong Chemical Industry

摘　　要：用甲壳素生产壳聚糖产生的高浓度强碱废液制备防腐剂—双乙酸钠。对废液脱色、浓缩、投入乙酸的量、反应时间、反应温度、干燥温度与时间等制备条件进行了研究,确定了最佳工艺条件。所得产品中含40.45%乙酸和58.45%乙酸钠,水含量小于2%,质量符合FAO/WHO标准。The high concentration strongly basic waste liquid from making chitosan from chitin was used in preparing the sodium diacetate. The preparative conditions including discoloring and enriching the liquid; adding measure of acetic acid, exerting temperature and time of the reaction and drying product were tested in order to obtain optimum preparative technology. Percentage contents of acetic acid, sodium acetate and water in the product were 40.45, 58.45 and ≤ 2 respectively by using the technology. They met the quality specification of the FAO/WHO.

关 键 词：脱乙酰基废液 双乙酸钠 废液制备 甲壳素 

分 类 号：TQ261.1[化学工程—有机化工]