膜含量,料阶段和剥离阶段的影响,用于通过使用聚合物包容膜提取ladium溶液
Başak Keskin1, Oğuz Orhun Teber2, Bihter Zeytuncu3
1Environmental Engineering Department, Istanbul Technical University, Maslak 34469, Istanbul, Turkey; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak 34469, Istanbul, Turkey.
概括
这项研究表明,使用聚合物包容膜 (PIMs) 恢复的有效方法. 由聚乙烯,A336和三聚胺组成的优化PIM,实现了超过90%的拉提取效率.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 是一种重要的贵金属,用于各种工业应用,包括燃料电池,电,电子和催化.
- 的高成本和稀有性需要有效的回收方法来确保可持续性和经济可行性.
- 聚合物包容膜 (PIMs) 由于其效率和简单性,为贵金属提取提供了一个有前途的方法.
研究的目的:
- 开发和优化聚合物入膜 (PIM) 以有效提取.
- 为了研究不同参数,如剥离阶段,料度和膜组成,对拉提取的影响.
- 用PIM技术确定最大限度地回收的最佳条件.
主要方法:
- 聚合物纳入膜 (PIMs) 是使用聚乙烯 (PVC) 作为聚合物,A336作为塑化剂,三聚胺 (TOA) 作为载体通过蒸发方法制造的.
- 通过系统地改变剥离阶段 (例如,HCl度),料阶段的度和膜组成来研究的提取效率.
- 使用能量分散式X射线光谱 (EDX) 分析了在膜表面保留的的数量.
主要成果:
- 在剥离阶段,盐酸 (HCl) 的最佳度被确定为0.5M,从而产生更高的动力参数和超过85%的提取效率.
- 在料阶段,的度为2.5 ppm,导致更高的动力参数和超过90%的提取效率.
- 发现,用于拉提取的最有效的PIM成分是40%PVC40%A33620%TOA,EDX分析证实在膜表面保留3.3%的拉.
结论:
- 开发的PIM,特别是含有40%PVC,40%A336和20%TOA的配方,证明了回收的高效率和有效性.
- 用0.5M HCl优化剥离阶段,并使用2.5ppm的料度显著提高了提取性能.
- 这种基于PIM的提取方法为从各种来源回收宝贵的提供了可行和高效的解决方案.
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