Journal of University of Chinese Academy of Sciences >
Adsorption performance of CMC polymer for heavy metal ions
Received date: 2009-02-12
Revised date: 2009-04-17
Online published: 2009-09-15
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
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]. Journal of University of Chinese Academy of Sciences, 2009 , 26(5) : 627 -632 . DOI: 10.7523/j.issn.2095-6134.2009.5.007
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