Adsorption of palladium(II) from chloride solutions on Amberlyst A 29 and Amberlyst A 21 resins
Adsorption of palladium(II) from chloride solutions on Amberlyst A 29 and Amberlyst A 21 resins
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DOI：
10.1016/j.hydromet.2008.10.002
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发表时间：
2009-03-01
期刊：
影响因子：
4.7
通讯作者：
Wolowicz, A.
中科院分区：
文献类型：
--
作者：
Hubicki, Z.;Wolowicz, A.
用静态和动态方法研究了2种阴离子交换树脂--强碱性Amberlyst A 2 9和弱碱性Amberlyst A 2 1在1.0和2.0M的氯化钠溶液中，在不同的酸浓度范围(0.1~2.0M)内对钯(II)络合物的吸附。用Pd(II)的穿透曲线计算了Pd(II)的离子交换容量、重量和床分配系数。动力学研究采用Legergren方程、准二级动力学模型和颗粒间扩散动力学模型计算动力学参数。结果表明，Amberlyst A 2 1比Amberlyst A 2 9更适合于从酸性氯化物溶液中吸附钯(II)氯络合物。更重要的是。第一类拟秒级线性动力学模型的相关系数最高，并与实验数据进行了最好的拟合。爱思唯尔出版公司(Elsevier B.V.)
Two anion exchange resins - strongly basic Amberlyst A 29 and weakly basic Amberlyst A 21 - were applied to the adsorption of palladium(II) Complexes from HCl-NaCl Solutions over a range of acid concentrations (0.1-2.0 M) in 1.0 and 2.0 M NaCl using static and dynamic methods. The breakthrough curves of Pd(II) were used to calculate the ion exchange capacity, weight and bed distribution coefficients. Kinetic studies applied the Legergren's equation, the pseudo-second order and the inter-particle diffusion kinetic models to calculate kinetic parameters. it was observed that Amberlyst A 21 is more promising for adsorbing palladium(II) chloro-complexes from acidic chloride solutions than Amberlyst A 29. Furthermore. the type 1, pseudosecond order linear kinetic model has the highest correlation coefficient and gives the best fit between the experimental and predicted data. Published by Elsevier B.V.