使用电极电离技术去除
Gülseren Demir1, Ayşe Nur Mert1, Özgür Arar1
1Chemistry Department, Faculty of Science, Ege University, Izmir 35040, Türkiye.
ACS omega
|May 30, 2023
概括
这项研究证明了使用混合离子交换系统有效地从水中去除离子 (Li+). 电极电离过程实现了99%的Li+去除,显示了选择性离子分离的前景.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 从水溶液中去除离子 (Li+) 对各种工业和环境应用至关重要.
- 传统的离子分离方法可能是能源密集型或低效的.
- 结合离子交换和电化学的混合系统为提高性能提供了潜力.
研究的目的:
- 为了研究混合聚合物离子交换树脂和膜系统对Li+去除的有效性.
- 评估操作参数对Li+去除效率和选择性的影响.
- 确定电极电离过程的质量传输系数和特定能耗.
主要方法:
- 使用了整合聚合物离子交换树脂和膜的混合单元.
- 研究了应用潜力,流量,共存离子和电解质度的影响.
- 使用单价离子和双价离子进行了选择性测试.
- 测量质量运输系数和特定能耗.
主要成果:
- 在20V时达到99%的Li+去除.
- 清除率从99%降至94%,因为流量从2L/h降至1L/h.
- 单价离子 (Na+,K+) 没有影响Li+的去除,但双价离子 (Ca2+,Mg2+,Ba2+) 减少了它.
- 在最佳条件下,质量传输系数为5.39 × 10-4 m/s,能量消耗为106.2 W h/g LiCl.
结论:
- 混合电极电离系统有效地从水溶液中去除+.
- 该系统表现出稳定的性能和对Li+的选择性.
- 这项技术显示了高效和选择性回收和水处理的潜力.
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