CMC聚合物对重金属离子的吸附性能

doi:10.7523/j.issn.2095-6134.2009.5.007

中国科学院大学学报 ›› 2009, Vol. 26 ›› Issue (5): 627-632.DOI: 10.7523/j.issn.2095-6134.2009.5.007

CMC聚合物对重金属离子的吸附性能

刘作新^1,3, 曲威^1,2, 苗永刚^1,2, 王振营^1,3, 尹光华^1,3, 张法升^1,2

1. 中国科学院沈阳应用生态研究所,沈阳 110016;
2. 中国科学院研究生院,北京 100049;
3. 辽宁省节水重点实验室,沈阳 110016

收稿日期:2009-02-12 修回日期:2009-04-17 发布日期:2009-09-15
通讯作者: 刘作新
基金资助:
中国科学院知识创新工程项目(KSCX2-YW-N-004)、辽宁省节水农业重点实验室基金项目(05KJT21002)和辽宁省农业科技计划重大项目(2008212003)资助 

Adsorption performance of CMC polymer for heavy metal ions

LIU Zuo-Xin^1,3, QU Wei^1,2, MIAO Yong-Gang^1,2, WANG Zhen-Ying^1,3, YIN Guang-Hua^1,3, ZHANG Fa-Sheng^1,2

1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China;
3. Key Laboratory of Liaoning Water-saving Agriculture, Shenyang 110016, China

Received:2009-02-12 Revised:2009-04-17 Published:2009-09-15

摘要/Abstract

摘要：

通过正交试验得出制备羧甲基纤维素(CMC)聚合物的最佳工艺条件:丙烯酸(AA)/羧甲基纤维素=10,引发剂(硫酸铵)和交联剂(N,N'-亚甲基双丙烯酰胺)用量分别为单体的0.0014倍和0.0015倍.吸胀平衡后,将CMC聚合物在400~450℃下完全灰化16h,消解并用火焰原子吸收法测定聚合物对Zn²⁺、Cu²⁺、Pb²⁺、Cd²⁺、Cr²⁺、Ni²⁺和Mn²⁺的吸附性能.结果表明,CMC聚合物对重金属离子具有一定的吸附能力,其吸附量随着溶液pH值和重金属离子质量浓度的增加而增大,当pH为9时达到最大;并且CMC聚合物对Pb²⁺和Cu²⁺的吸附量要大于其他金属离子.

关键词: 羧甲基纤维素聚合物, 火焰原子吸收法, 重金属离子, 吸附

Abstract:

The optimum technological conditions to prepare CMC polymer were determined by orthogonal experiments, in which the weight ratio of AA to CMC was 10, while the amounts of initiator and the cross-linker were 0.0014 and 0.0015 times as much as that of the monomer, respectively. After imbibition balance, the CMC polymer was digested when it had been completely ashed for 16h at 400~450℃, and then the flame atomic adsorption spectroscopy method was used to determine the polymer's adsorbability of Zn²⁺, Cu²⁺, Pb2+, Cd²⁺, Cr²⁺, Ni²⁺, and Mn²⁺. The results showed that the CMC polymer could adsorb heavy metal ions, while the adsorption capacity increased with the increment of pH and concentration of heavy metal ions. It reached the maximum when the pH value was 9, and the adsorption quantities of Pb2+ and Cu²⁺ were higher than those of the other 5 mental ions.

Key words: CMC polymer, FAAS, heavy metal ions, adsorption

中图分类号:

O657.3

刘作新, 曲威, 苗永刚, 王振营, 尹光华, 张法升. CMC聚合物对重金属离子的吸附性能[J]. 中国科学院大学学报, 2009, 26(5): 627-632.

LIU Zuo-Xin, QU Wei, MIAO Yong-Gang, WANG Zhen-Ying, YIN Guang-Hua, ZHANG Fa-Sheng. Adsorption performance of CMC polymer for heavy metal ions[J]. , 2009, 26(5): 627-632.

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CMC聚合物对重金属离子的吸附性能

Adsorption performance of CMC polymer for heavy metal ions

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