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PALLADIUM ADSORPTION ON IONIC LIQUID IMPREGNATED FLORISIL

Lavinia Lupa, Laura Cocheci, Raluca Voda, Petru Negrea

First published: 2017-06-20https://doi.org/10.5593/sgem2017/52/s20.090View metrics

Abstract

Palladium is one of the precious metals which have great economic importance. It is used in many fields such as electrical and electronic industries, corrosion resistant materials, and jewelry due to their specific physical and chemical properties, catalysts in various chemical processes. Due to its importance and high price, it is essential to develop efficient recovery methods for this element especially from water containing trace amount of Pd. Therefore in this work we report studies regarding the removal of Pd ions from aqueous solutions through adsorption onto raw and impregnated Florisil with trihexyl tetradecyl phosphonium chloride ionic liquid (Cyphos IL-101). The impregnation of Florisil with the studied ionic liquid was realized by ultrasonication method. The present paper showed that the impregnation of Cyphos IL-101 onto Florsil is obtained an homogenous adsorbent which develop a maximum adsorption capacity in the removal process of Pd(II) ions from aqueous solutions of 133.3 mg/g, which is two times higher than the adsorption capacity developed by the raw Florisil. The adsorption capacity of the studied materials are dependent by the pH, S:L ratio, stirring time and Pd(II) initial concentration. The adsorption kinetics was better described by pseudo-second-order kinetic model compare to pseudo-first-order model. The experimental data showed good fit to the Langmuir isotherm.

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Publication details

Title
PALLADIUM ADSORPTION ON IONIC LIQUID IMPREGNATED FLORISIL
Authors
Lavinia Lupa, Laura Cocheci, Raluca Voda, Petru Negrea
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Ecology, Economics, Education and Legislation
Publisher
STEF92 Technology
Year
2017
Pages
705-712
SWS Citekey
Lupa201720705712
ISSN
1314-2704
ISBN
978-619-7408-09-6
Language
en
Publication type
Conference Paper
Keywords
ionic liquidimpregnationpalladiumadsorption
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