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Título: | Adsorption of non-ionic pesticide S-Metolachlor on layered double hydroxides intercalated with dodecylsulfate and tetradecanedioate anions |
Autor: | Otero, R.; Fernández, J. M.; Ulibarri Cormenzana, M. A.; Celis, Rafael CSIC ORCID ; Bruna González, Felipe CSIC ORCID | Fecha de publicación: | 2012 | Editor: | Elsevier | Citación: | Applied Clay Science 65-66: 72-79 (2012) | Resumen: | The objective of the present research was to investigate the adsorption of non-ionic pesticide S-Metolachlor on two different organohydrotalcites (OHTs): one intercalated with dodecylsulfate (HT-DDS) and the other one with tetradecanedioate (HT-TDD) anions, both of them obtained by the coprecipitation method. The adsorbents and the adsorption products were characterized by X-ray diffraction and FT-IR spectroscopy. The results indicated that the adsorption of S-Metolachlor on the organohydrotalcite HT-TDD was higher than that on HT-DDS, but desorption was lower. The amount of S-Metolachlor adsorbed increased with temperature, especially for HT-TDD. S-Metolachlor desorption from HT-DDS and HT-TDD was characterized using two experimental procedures, which indicated the higher reversibility of S-Metolachlor adsorption from HT-DDS compared to HT-TDD. The results suggest the possibility to use both organohydrotalcites uptaking S-Metolachlor from contaminated water. | URI: | http://hdl.handle.net/10261/60817 | DOI: | 10.1016/j.clay.2012.04.022 | Identificadores: | doi: 10.1016/j.clay.2012.04.022 issn: 0169-1317 e-issn: 1872-9053 |
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