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首页> 外文期刊>Environmental engineering and management journal >REMOVAL AND PRECONCENTRATION OF CADMIUM ON POLYSTYRENE-GRAFT-ETHYLMETHACRYLATE COPOLYMER
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REMOVAL AND PRECONCENTRATION OF CADMIUM ON POLYSTYRENE-GRAFT-ETHYLMETHACRYLATE COPOLYMER

机译：在聚苯乙烯接枝的乙基丙烯酸甲酯共​​聚物上去除和富集镉

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摘要

The removal and determination of toxic heavy metal ions in aqueous solutions has been given much more attention over the past few years. In this paper, a removal and separation/preconcentration method for cadmium species on Poly S_(15)-g-EMA_(100) (a kind of polystyrene-graft-ethyl methacrylate copolymer) in water samples was developed. Some experimental parameters, such as solution pH, sample flow rate, type and concentration of eluent, amount of adsorbent and effect of common matrix ions were investigated. Under the optimum conditions, adsorption isotherms and adsorption capacities have been examined. Langmuir model had been shown to fit the experimental data well, with the correlation coefficient (R~2) of 0.997. The Langmuir monolayer adsorption capacity (q_(max)) and constant of the adsorption energy (K_L) were estimated as 9.7 mg/g and 0.15 L/g, respectively. The method was applied to different water samples such as wastewater, tap water and dam water.
机译：过去几年中，水溶液中有毒重金属离子的去除和测定受到了更多关注。本文研究了水样中聚S_（15）-g-EMA_（100）（一种聚苯乙烯-接枝-甲基丙烯酸乙酯共聚物）中镉种类的去除，分离/富集方法。研究了一些实验参数，例如溶液pH，样品流速，洗脱液的类型和浓度，吸附剂的量以及常见基质离子的影响。在最佳条件下，已经研究了吸附等温线和吸附容量。朗格缪尔模型已经很好地拟合了实验数据，相关系数（R〜2）为0.997。 Langmuir单层吸附容量（q_（max））和吸附能常数（K_L）分别估计为9.7 mg / g和0.15 L / g。该方法适用于不同的水样，例如废水，自来水和大坝水。

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