羧甲基甲壳素-丙烯酰胺共聚物对印染废水的脱色研究

The Study on Decolorization of Dyeing Wastewater by Carboxymethyl Chitin-Acrylamide Copolymer

制备了羧甲基甲壳素-丙烯酰胺接枝共聚物,研究了其对印染废水的吸附脱色能力。结果显示羧甲基甲壳素-丙烯酰胺接枝共聚物对印染废水具有良好的吸附脱色性能。脱色实验最佳工艺条件为,接枝率为67.5%的羧甲基甲壳素-丙烯酰胺接枝共聚物,在投放量为0.6g.L-1,温度为20℃,脱色时间为15min的条件下,脱色率可达到96.3%,脱色效果良好。羧甲基甲壳素-丙烯酰胺接枝共聚物是一类有应用价值的廉价印染废水脱色剂,可进一步开发研究。

The graft copolymer was synthesized by grafting acrylamide onto carboxymethyl chitin and was adopted to decolorize the dyeing wastewater. The experiment results indicated that graft copolymer of acrylamide onto carboxymethyl chitin had better adsorptive ability for dyeing waste-water. The optimum conditions were shown as follows： at 20℃, added 0.6g.L-1 the graft eopolymer whose grafting rate was 67.5%, then deeolorized for 15min, the decoloration rate reached 96.3%. The graft eopolymer of acrylamide onto carboxymethyl chitin was a cheap sorbent with better adsorption behavior.