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Eu(III) removal by tetrabutylammonium di-hydrogen phosphate (TBAH2P) functionalized polymers
oleh: Mihaela Ciopec, Andreea Gabor, Corneliu Mircea Davidescu, Adina Negrea, Petru Negrea, Narcis Duteanu
Format: | Article |
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Diterbitkan: | Elsevier 2020-01-01 |
Deskripsi
Polymers involved as adsorbent materials during Eu(III) removal tests were prepared by functionalization of a natural polymer – cellulose, and a commercial one represented by Amberlite XAD7. As extractant, we used tetrabutil ammonium di-hydrogen phosphate (TBAH2P) which is a cheap and environmentally friendly product. Impregnated polymers using a rotavapor system in which the quaternary ammonium salt used as extractant was concentrated on to the used polymer. Later obtained materials were characterized by Fourier Transformed Infrared Spectroscopy (FTIR) and X-Ray electron dispersion (EDX). During experimental test we determine pH, contact time, Eu(III) initial concentration and temperature effect on the functionalized polymers adsorption capacity. Therewith for both functionalized polymers, a comparison was made between the adsorption process characteristics based on kinetics and thermodynamic studies. Keywords: Europium, Cellulose, Amberlite XAD7, Adsorption, Adsorption isotherm