Study of factors controlling the sorption of diclofenac on a calcined synthetic hydrotalciteÉtude des facteurs contrôlant la sorption du diclofénac sur une hydrotalcite de synthèse calcinée
| Autor: | Rachid Khatem, Abdellah Bakhti |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Water Quality Research Journal. 48:294-304 |
| ISSN: | 2408-9443 1201-3080 |
| DOI: | 10.2166/wqrjc.2013.059 |
| Popis: | The removal of diclofenac by sorption on a synthetic hydrotalcite and on its calcined product was investigated. The solid [Mg-Al-CO3], prepared by coprecipitation at constant pH, was characterized by X-ray diffraction and infrared spectroscopy (FTIR). The interaction of these materials with diclofenac shows that the kinetics of sorption is fast and follows the second order model. The effects on the sorption process of the diclofenac concentration in the solution, the sorbent concentration and the temperature were studied. The treatment of solutions containing from 0.02 to 2 mmole L−1 of diclofenac produced good results. The sorption capacity of the calcined hydrotalcite is close to 1.9 mmole g−1. The study of the reversibility of the sorption of diclofenac shows that the recycling of these calcined materials is possible, thus suggesting their possible use as supports for the removal of diclofenac. Recycling by restitution and calcination-rebuilding should make possible the recovery of this pollutant. |
| Databáze: | OpenAIRE |
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