Readily Prepared Polystyrene-Bound Pyridine-2,6-dicarboxylate and Its Application for Removal of Mercury Ions

被引：5
作者：
Iravani, M. R. [1 ]
Tangestaninejad, S. [1 ]
Habibi, M. H. [1 ]
Mirkhani, V. [1 ]
机构：
[1] Univ Isfahan, Dept Chem, Esfahan 8174673441, Iran
来源：
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY | 2010年 / 7卷 / 03期
关键词：
Polystyrene; Polymer supported; Pyridine dicarboxylate; Mercury ion removal; ATOMIC-ABSORPTION SPECTROMETRY; ENVIRONMENTAL-SAMPLES; COORDINATION POLYMER; RESIN; GEL; PRECONCENTRATION; METHYLMERCURY; EXTRACTION; SEPARATION; RECOVERY;
D O I：
10.1007/BF03246070
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Commercially available chloromethylated polystyrene (cross-linked with 2% divinylbenzene) was used to prepare novel and stable polymer supported pyridine-2,6-dicarboxylate. This polymer was found to accelerate the selective removal of Hg(II) from aqueous solutions containing different amounts of Hg(II) (10-100 ppm). Adsorption rate was high at the beginning and then equilibrium was reached in about 25 min. Maximum Hg(II) adsorption capacity of the resin was about 41.5 mg/g of the dry polymer. The Hg(II) adsorption ability increased with the increase in pH, in the range where the solubility of the Hg(II) was not affected by pH. More than 95% of the adsorbed Hg(II) was desorbed in 15 min by using 0.1 M HNO3 as an elution agent. The regeneration of this resin by strong acid was feasible and desorption ratio was very high (up to 96%).
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页码：791 / 798
页数：8
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