Sorption of Pb(II), Cd(II) and Zn(II) performed with the use of carboxyphenylresorcinarene-impregnated Amberlite XAD-4 resin
Sorption of Pb(II), Cd(II) and Zn(II) performed with the use of carboxyphenylresorcinarene-impregnated Amberlite XAD-4 resin
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DOI：
10.1080/19443994.2013.785370
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发表时间：
2014-01
影响因子：
1.1
通讯作者：
I. Zawierucha;J. Kozłowska;C. Kozlowski;A. Trochimczuk
中科院分区：
文献类型：
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作者：
I. Zawierucha;J. Kozłowska;C. Kozlowski;A. Trochimczuk
本文研究了在间歇式和固定床柱系统中，羧基苯基间苯二酚树脂对Pb（Ⅱ）、Cd（Ⅱ）和Zn（Ⅱ）的吸附特性。批式和固定床柱系统的结果证实，浸渍树脂是一个很好的吸附剂的Pb（II）和一个穷人的Cd（II）和Zn（II）离子。采用间歇固相萃取法，在不同pH值、作用时间和金属离子浓度条件下，对Pb（II）、Cd（II）和Zn（II）进行了固相萃取分析。结果表明，固相萃取分离Pb（II）的最佳条件为pH 6.5、接触时间60 min、Pb（II）初始浓度10 mg/L。在间歇体系中Pb（II）的萃取容量为107.6mg/g，即99.7%。另一方面，在最佳条件下的Cd（II）和Zn（II）的SPE表现出小得多的萃取能力。提取金属离子的选择性顺序为Pb（II）>> Cd（II）、Zn（II）。相关系数（R2）表明，Langmuir吸附等温线模型能较好地描述吸附过程。
AbstractA study on the adsorption characteristics of Pb(II), Cd(II) and Zn(II) cations onto carboxyphenylresorcinarene-impregnated resin in batch and fixed bed column systems has been conducted. Results of the batch and fixed bed column systems confirm that impregnated resin is a good adsorbent for Pb(II) and a poor one for Cd(II) and Zn(II) ions. Solid phase extraction (SPE) of Pb(II), Cd(II) and Zn(II) was conducted in batch system under various pH, interaction times, and metal concentrations. It was found that SPE of Pb(II) was optimal at pH 6.5 at contact time of 60 min, and at initial Pb(II) concentration equal to 10 mg/L. The extraction capacity for Pb(II) in the batch system was 107.6 mg/g, i.e. 99.7%. On the other hand, the SPE of Cd(II) and Zn(II) under optimal conditions has shown much smaller extraction capacities. Selectivity order of extracted metal ions was Pb(II) >> Cd(II), Zn(II). The values of correlation coefficients (R2) indicated that the Langmuir isotherm model well-described the sorp...