高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (12): 1752.

• 研究论文 • 上一篇    下一篇

羧基淀粉接枝聚合物对重金属离子的吸附速率方程

胡中爱1, 王雪峰1, 张伏龙2   

  1. 1. 西北师范大学化学系, 兰州 730070;
    2. 甘肃教育学院化学系
  • 收稿日期:1992-12-23 修回日期:1993-05-08 出版日期:1993-12-24 发布日期:1993-12-24
  • 通讯作者: 胡中爱, 男, 31岁, 硕士, 讲师.
  • 作者简介:胡中爱, 男, 31岁, 硕士, 讲师.
  • 基金资助:

    甘肃省自然科学基金

Sorption Rate Equation of Carboxyl-Containing Starch Graft Polymer for Some Heavy Metal Ions

HU Zhong-Ai1, WANG Xue-Feng1, ZHANG Fu-Long2   

  1. 1. Department of Chemistry, Northwest Normal University, Lanzhou, 730070;
    2. Department of Chemistry, Gansu Educational College
  • Received:1992-12-23 Revised:1993-05-08 Online:1993-12-24 Published:1993-12-24

PDF (PC)

被引次数

24

摘要： 以Ce4+为引发剂,将丙烯腈接枝到高交联淀粉上,接枝产物再经皂化水解制得水不溶性羧基淀粉接枝聚合物(简称羧基淀粉).研究了羧基淀粉吸附重金属离子的动力学行为.实验结果表明,羧基淀粉吸附速率快,吸附平衡时间短,吸附量随时间的变化规律遵从Q/Q∞=αt(1+αt)方程.

关键词: 羧基淀粉, 重金属离子, 吸附速率方程

Abstract: Water-insoluble carboxyl-containing starch graft polymer(carboxyl-containing starch) was prepared by grafting acrylonitrile onto highly cross-linked starch, followed by base saponifi-cation to convert nitrile group into a mixture of carboxamide and carboxylate groups.Ceric ammonium nitrate was used as initiator for the graft polymerization.The sorption kinetic properties of carboxyl-containing starch for several heavy metal ions have also been studied systematically.It is shown that the sorption rate of carboxyl-containing starch is very rapid and the time of reaching its equilibrium is short.The relationship between the sorption amount and time completely complies with following equationQ/Q∞=at/(1+at).

Key words: Carboxyl-containing starch, Heavy metal ions, Sorption rate equation

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