Effects of membrane content, feed phase, and stripping phase for palladium solution extraction by using a polymer inclusion membrane.

IF 2.5 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL
Water Science and Technology Pub Date : 2024-07-01 Epub Date: 2024-06-17 DOI:10.2166/wst.2024.209
Başak Keskin, Oğuz Orhun Teber, Bihter Zeytuncu, Ismail Koyuncu
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引用次数: 0

Abstract

Palladium is now frequently utilized in fuel cells, electroplating, electronics, and catalysis. Due to their rarity and high cost, precious metal recovery has taken on a significant role. The extraction method frequently utilized in polymer inclusion membranes (PIMs) is both efficient and simple since it has been demonstrated that precious metal adsorption on the membrane significantly controls the mechanism of chemical adsorption. In this study, polyvinyl chloride (PVC) as a polymer, A336 as a plasticizer, and trioctylamine (TOA) as a carrier were used to produce a PIM by evaporation. After the production of PIMs, palladium extract was studied. The stripping phase, palladium concentration in the feed phase, and components of the membrane were changed to determine the optimum condition with better extraction ability. When 0.5 M of HCl was used, higher kinetic parameter results and higher than 85% extraction efficiency were achieved compared to other concen- trations. When the EDX results were examined, 3.3% palladium was retained on the membrane surface. When the palladium concentration was selected at 2.5 ppm, higher kinetic parameters were observed, and the extraction efficiency was over 90%. The best membrane was the PIM containing 40% PVC-40% A336-20% TOA.

使用聚合物包层膜萃取钯溶液时膜含量、进料相和汽提相的影响。
目前,钯经常被用于燃料电池、电镀、电子和催化等领域。由于其稀有性和高成本,贵金属的回收发挥了重要作用。聚合物包合膜(PIMs)中经常使用的萃取方法既高效又简单,因为事实证明,贵金属在膜上的吸附能显著控制化学吸附的机制。本研究以聚氯乙烯(PVC)为聚合物,A336 为增塑剂,三辛胺(TOA)为载体,通过蒸发法制备 PIM。生产出 PIM 后,对钯提取物进行了研究。通过改变萃取相、进料相中的钯浓度和膜的成分,确定了萃取能力更强的最佳条件。与其他浓度相比,当使用 0.5 M 盐酸时,动力学参数结果更高,萃取效率也高于 85%。在对 EDX 结果进行检测时,膜表面保留了 3.3% 的钯。当选择钯浓度为 2.5 ppm 时,观察到更高的动力学参数,萃取效率超过 90%。最好的膜是含有 40% PVC-40% A336-20% TOA 的 PIM 膜。
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来源期刊
Water Science and Technology
Water Science and Technology 环境科学-工程:环境
CiteScore
4.90
自引率
3.70%
发文量
366
审稿时长
4.4 months
期刊介绍: Water Science and Technology publishes peer-reviewed papers on all aspects of the science and technology of water and wastewater. Papers are selected by a rigorous peer review procedure with the aim of rapid and wide dissemination of research results, development and application of new techniques, and related managerial and policy issues. Scientists, engineers, consultants, managers and policy-makers will find this journal essential as a permanent record of progress of research activities and their practical applications.
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