天然产物研究与开发 ›› 2018, Vol. 30 ›› Issue (6): 1078-1084.doi: 10.16333/j.1001-6880.2018.6.026

• 开发研究 • 上一篇    下一篇

阳离子型芋头淀粉絮凝剂对印染废水中直接紫N和分散艳蓝E-4R的吸附性能研究

周捷,李东芳,徐婧,汪丽丽,邱业先*   

  1. 苏州科技大学化学生物与材料工程学院,苏州 215000
  • 出版日期:2018-07-05 发布日期:2018-07-05
  • 基金资助:

    苏州市住房和城乡建设局项目(201508)

     

Adsorption of Cationic Taro Starch for Removal of C.I.Direct Violet 1 and C.I.Disperse Blue 56 in Wastewater

ZHOU Jie,LI Dong-fang,XU Jing,WANG Li-li,QIU Ye-xian*   

  1. School of Chemistry,Biology and Materials Engineering,Suzhou University of Science and Technology,Suzhou 215000,China
  • Online:2018-07-05 Published:2018-07-05

摘要: 以芋头淀粉为原料,采用2,3-环氧丙基三甲基氯化铵(GTA)为阳离子醚化剂,制备一种阳离子型芋头淀粉絮凝剂,对其进行表征,并考察其作为一种絮凝剂对水中直接紫N(C.I.Direct Violet 1)和分散艳蓝E-4R(C.I.Disperse Blue 56)的吸附性能。结果表明,当所制备淀粉絮凝剂投加量为0.6 g/L和1.8 g/L时,分别对直接紫N和分散艳蓝E-4R达到吸附平衡,脱色率均在90%以上。阳离子型芋头淀粉絮凝剂对直接紫N和分散艳蓝E-4R的吸附更符合Langmuir吸附等温式,吸附过程均是自发进行的单分子层吸热反应,其中对直接紫N的吸附以化学吸附为主,对分散艳蓝E-4R的吸附以物理吸附为主。

关键词: 阳离子型芋头淀粉絮凝剂, 吸附, 直接紫N, 分散艳蓝E-4R

Abstract: A cationic taro starch flocculant was prepared by using taro starch as raw material and 2,3-epoxypropyltrimethylammonium chloride (GTA) as cationic etherifying agent.Fourier transform infrared spectroscopy and scanning electron microscopy of flocculant were characterized.The adsorption properties of C.I.Direct Violet 1 and C.I.Disperse Blue 56 in water were investigated.When the dosage of the prepared starch flocculant was 0.6 g/L and 1.8 g/L,the adsorption equilibrium of C.I.Direct Violet 1 and C.I.Disperse Blue 56 was respectively reached,and the decoloration rate was above 90%.The adsorption behavior of C.I.Direct Violet 1 and C.I.Disperse Blue 56 on cationic taro starch conformed to the Langmuir isotherm.The adsorption was spontaneous endothermic reaction of single molecule layer.Among them,the adsorption of C.I.Direct Violet 1 was mainly chemical adsorption,and the adsorption of C.I.Disperse Blue 56 was mainly physical adsorption.

Key words: cationic taro starch, adsorption, C.I.Direct Violet 1, C.I.Disperse Blue 56

中图分类号: 

X52