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超声波辅助有效地将从盐水中分离出来,使用复合聚硫离子液体膜

Milad Hermani¹, Behrang Golmohammadi², Hemayat Shekaari²

¹Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic) Hafez Ave, P.O. Box 15875-4413 Tehran Iran.

|August 7, 2024

概括

超声波辅助膜分离使用复合膜有效地从盐水中提取. 优化条件提高了流量和选择性,为可持续矿开采提供了希望.

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:

对于储能至关重要,需要高效的提取方法.
盐水源含有宝贵的性金属,包括,以及化物.
目前的提取方法在选择性和效率方面面临挑战.

研究的目的:

开发和优化超声波辅助膜分离工艺,用于从盐水中选择性提取.
研究复合膜组成和超声波参数对分离效率的影响.
评估料度和膜疏水性对选择性的影响.

主要方法:

通过将支持的离子液体膜 ([RMIM][PF6] + TBP) 与聚硫 (PES) 和PVC膜集成,制造一个复合膜.
超声波辅助膜分离的应用,从盐水中的化中提取.
参数的系统变化:膜组成 (xIL=0.5的[MOIM][PF6]),超声波频率 (大约. 250 kHz),振幅 (75%),脉冲周期 (75%),和料度 (250-1000 ppm). 在这个过程中,我们可以看到

主要成果:

一种具有xIL=0.5的[MOIM][PF6]的膜显示出优越的选择性.
发现最优的超声波频率约为250kHz,更高的频率增加了流量和选择性.
增加料度 (250-1000 ppm) 和优化超声波参数 (75%的振幅和脉冲周期) 显著提高了的流量和选择性.
流量最初随着更短的超声波时间而增加,但随着长时间的暴露而减少.

结论:

使用量身定制的复合膜进行超声波辅助的膜分离,为从盐水中提取提供了一种绿色,选择性和高效的方法.
该过程的选择性受膜疏水性和离子液态行为的影响.
优化的超声波条件和料度是最大限度地回收的关键,为未来从盐水资源中开采提供了一个有希望的途径.

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