Selective Transport of Bismuth from Heavy Metal Solution by Ionic Liquid-Based Polymer Inclusion Membrane IL-PIM

Mohamed Malki; Rabea Meziani; Lynda Mitiche; Amar Sahmoune; Claudia Fontas

doi:10.55549/epstem.1755297

Selective Transport of Bismuth from Heavy Metal Solution by Ionic Liquid-Based Polymer Inclusion Membrane IL-PIM

Abstract

Bismuth is an important critical metal which is under risk of supply. It is mainly found and extracted at trace amounts in copper, lead, tin and gold mining by-product. In this work, we present the results of the selective transport of trace bismuth Bi(III) from a solution of heavy metals by an Ionic liquids-based Polymer Inclusion Membranes (PIM), using the task-specific ionic liquid: trihexyl(tetradecyl) phosphonium salicylate (THTDPS), as extractant and ion carrier. The TS-IL was first synthesized by exchanging the inorganic anion of trihexyl(tetradecyl) phosphonium chloride Cyphos IL 101 with the organic anion of sodium salycilate. Important parameters influencing extraction and transport have been examined and optimized. The studied PIM is composed of 50% CTA, and 50% THTDPS without any additional chemical (modifier or plasticizer). The performance and stability of the PIM was carried out in depth. The selective transport of Bi(III) from a solution containing the heavy metals: Pb(II), Cu(II), Cd(III), Ni(II) was carried out. The feed phase is composed of trace concentration of the metal ions (10 mg.L-1 ) in 1M HCl. The optimal receiving phase conditions were studied and the best composition is EDTA 0.05M at pH 5. The PIM exhibits a good selectivity towards Bi(III), and the transport rates are reported to be 74.8 ± 9% for Bi(III), against 62.23%, 14.8 ± 9%, 3.15 ± 3.15%, and 2.5 ± 2.5% for Cd(II), Pb(II), Cu(II), and Ni(II), respectively. The study of the stability shows that the PIM can be used up to 5 cycles of extraction-back extraction without significant decrease in the efficiency.

Keywords

References

Malki, M., Meziani R., Mitiche, L., Sahmoune, A., & Fontas C. (2025). Selective transport of bismuth from heavy metal solution by ionic liquid-based polymer inclusion membrane IL-PIM. The Eurasia Proceedings of Science, Technology, Engineering and Mathematics (EPSTEM), 34, 333-338.

Details

Primary Language

English

Subjects

Separation Processes

Journal Section

Conference Paper

Authors

Mohamed Malki This is me
Algeria

Rabea Meziani This is me
Algeria

Lynda Mitiche This is me
Algeria

Amar Sahmoune This is me
Algeria

Claudia Fontas This is me
Spain

Early Pub Date

August 1, 2025

Publication Date

August 1, 2025

Submission Date

March 7, 2025

Acceptance Date

April 29, 2025

Published in Issue

Year 2025 Volume: 34

DOI

https://doi.org/10.55549/epstem.1755297

IZ

https://izlik.org/JA32YW38TW

Cite

RIS / Bibtex

APA

Malki, M., Meziani, R., Mitiche, L., Sahmoune, A., & Fontas, C. (2025). Selective Transport of Bismuth from Heavy Metal Solution by Ionic Liquid-Based Polymer Inclusion Membrane IL-PIM. The Eurasia Proceedings of Science Technology Engineering and Mathematics, 34, 333-338. https://doi.org/10.55549/epstem.1755297