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STUDIES ON EXTRACTION OF IRON(III) USING PHOSPHONIUM AND AMMONIUM IONIC LIQUIDS AS EXTRACTANTS OF METALS

1 POSPIECH Beata
Institution:
1 Czestochowa University of Technology, Department of Chemistry, Czestochowa, Poland, EU, b.pospiech@wip.pcz
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
199-203
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
470 views / 205 downloads
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Abstract

In this work the solvent extraction has been carried out for the removal of iron(III) from hydrochloric acid solutions. Tricaprylmethylammonium thiosalicylate [A336][TS] and trihexyl(tetradecyl)phosphonium thiosalicylate, [PR4][TS], a thiol-containing task specific ionic liquids (TSIL) were used as extractants in this process. Effect of hydrochloric acid concentration in aqueous phase on iron(III) extraction and separation has been investigated. Fe(III) ions were effectively removed from the aqueous phase by the phosphonium and ammonium ionic liquids and extraction efficiency increased with hydrochloric acid concentration increase. Also separation of Fe(III) was carried out from hydrochloric solution containing Cu(II) and the separation coefficients with [A336][TS] and [PR4][TS] were found. Highly selective extraction of Fe(III) over Cu(II) from hydrochloric acid has been achieved with 0.1 M [A336][TS] in toluene.

Keywords: iron(III), solvent extraction, trihexyl(tetradecyl)phosphonium thiosalicylate, tricaprylmethylammonium thiosalicylate, ionic liquids

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