Preprint Communication Version 1 Preserved in Portico This version is not peer-reviewed

The Separation of Lithium Ion and Imidazolium Cation by Electrical Driven Membrane Technology

Version 1 : Received: 31 January 2024 / Approved: 31 January 2024 / Online: 31 January 2024 (13:04:01 CET)

How to cite: Jingyi, X.; Xiang, M.; Runci, W.; Yuan, Z.; Zheng, W. The Separation of Lithium Ion and Imidazolium Cation by Electrical Driven Membrane Technology. Preprints 2024, 2024012203. https://doi.org/10.20944/preprints202401.2203.v1 Jingyi, X.; Xiang, M.; Runci, W.; Yuan, Z.; Zheng, W. The Separation of Lithium Ion and Imidazolium Cation by Electrical Driven Membrane Technology. Preprints 2024, 2024012203. https://doi.org/10.20944/preprints202401.2203.v1

Abstract

The separation of Li+ and [Bmim]+(1-Butyl-3-methylimidazolium) by electrically driven membrane technology was studied. The effects of the types and modification processes of cation exchange membranes, current density, total cation concentration, temperature, and anion types on separation efficiency were investigated. The results indicated that it is feasible to achieve efficient separation of Li+ and [Bmim]+ using the selectivity of cation exchange membranes under electric field. Membrane CMX and the modified membrane A and B which obtained from the CMX showed obvious selective of Li+ from [Bmim]+. When the current density is 5 mA/cm2 and the feed concentrations of Li+ and [Bmim]+ are 0.3 mol/L and 0.2 mol/L, the selective transport coefficient of the modified membrane B can reach 6.2 in the first 120 minutes of the process. Reducing current density and increasing total cation concentration can improve separation efficiency. Lowering the temperature can improve the separation effect, but improvement is not obviously. Changing the anion of the feed from chloride ion to acetate has no effect on the separation.

Keywords

lithium ions; imidazolium cations; electrical driven membrane technology

Subject

Engineering, Chemical Engineering

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.