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Molecules 2013, 18(10), 12845-12856; doi:10.3390/molecules181012845

Cs+ Removal from Aqueous Solutions through Adsorption onto Florisil® Impregnated with Trihexyl(tetradecyl)phosphonium Chloride

"Politehnica" University of Timisoara, Faculty of Industrial Chemistry and Environmental Engineering Blvd. Vasile Parvan no. 6, Timisoara 300223, Romania
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Received: 1 August 2013 / Revised: 9 October 2013 / Accepted: 10 October 2013 / Published: 16 October 2013
(This article belongs to the Special Issue Organophosphorus Chemistry)
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Abstract

This research determined the adsorption performance of Florisil® impregnated with trihexyl(tetradecyl)phosphonium chloride (Cyphos IL-101) in the process of Cs+ removal from aqueous solutions. The obtained Florisil® impregnated with the studied ionic liquid was characterized through energy dispersive X-ray analysis and Fourier transform infrared spectroscopy in order to verify that the impregnation with the ionic liquid had occurred. The adsorption process has been investigated as a function of pH, solid:liquid ratio, adsorbate concentration, contact time and temperature. The isotherm data was well described by a Langmuir isotherm model. The maximum adsorption capacities of the Florisil® impregnated with the studied ionic liquid was found to be 3.086 mg Cs+/g of adsorbent. The results indicated that the adsorption fitted well with the pseudo-second order kinetic model.
Keywords: Cs+ adsorption; trihexyl(tetradecyl)phosphonium chloride; Florisil® Cs+ adsorption; trihexyl(tetradecyl)phosphonium chloride; Florisil®
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MDPI and ACS Style

Lupa, L.; Negrea, A.; Ciopec, M.; Negrea, P. Cs+ Removal from Aqueous Solutions through Adsorption onto Florisil® Impregnated with Trihexyl(tetradecyl)phosphonium Chloride. Molecules 2013, 18, 12845-12856.

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