Abstract—New materials were obtained by impregnation of
trihexyltetradecylphosphonium chloride (Cyphos IL-101) onto
Florisil and Silica in order to be used as adsorbent in the
removal process of Sr
2+ from aqueous solutions. The obtained
materials were characterized through FT-IR, SEM, EDX, and
BET analysis. The adsorption process has been investigated as a
function of pH, solid:liquid ratio, adsorbate concentration,
contact time and temperature. The isotherm data were well
described by Langmuir isotherm model. The maximum
adsorption capacities was found to be 2.94 mg Sr
2+ / g of
adsorbent in case of Florisil and for Silica impregnated with
Cyphos IL-101 is 3.97 mg Sr
2+ / g of adsorbent. The results
indicate that the adsorption fitted well with the pseudo-second
order kinetic model.
Index Terms—Sr
2+ adsorption, Cyphos IL-101, isotherm
model, kinetic model.
The authors are with the University “Politehnica” Timisoara, Faculty of
Industrial Chemistry and Environmental Engineering, Blvd. Vasile Parvan,
no. 6, 300223, Timisoara, Romania (email: lavinia.lupa@chim.upt.ro).
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Cite:Adina Negrea, Lavinia Lupa, Mihaela Ciopec, and Petru Negrea, "Characterization of Strontium Adsorption from Aqueous Solutions Using Inorganic Materials Impregnated with Ionic Liquid," International Journal of Chemical Engineering and Applications vol. 4, no. 5, pp. 326-331, 2013.
