Artículo
Effect of the Al/clay ratio on the thiabendazol removal by aluminum pillared clays
Roca Jalil, María Eugenia; Baschini, Miria Teresita; Rodriguez Castellon, Enrique; Infantes Molina, Antonia; Sapag, Manuel Karim
Fecha de publicación:
01/2014
Editorial:
Elsevier
Revista:
Applied Clay Science
ISSN:
0169-1317
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In thiswork, four aluminumpillared clays (Al-PILC)with different Al/clay ratioswere synthesized and evaluated for the removal of thiabendazole (TB) (a fungicide widely used in agricultural activities) from aqueous media. The Al-PILC were thoroughly characterized by different techniques, such as X-ray diffraction (XRD), thermogravimetric analysis (DTA-TG), adsorption?desorption of N2 at 77 K, NH3-temperature programmed desorption (NH3-TPD) and transmission electron microscopy (TEM). The TB-adsorption studies were carried out in batch, at room temperature, at pH = 6 (natural pH, without additional control) and with different concentrations of TB (2?100 ppm). The measured TB adsorption capacities varied from 11.78 to 17.50 mg TB per gram of clay. The TB?Al PILC complexes obtained after the adsorption process were studied by X-ray photoelectron spectroscopy (XPS). The results suggested that the molecules of TB were adsorbed on the Al-PILC by two different phenomena: by physisorption in their porous structure and by hemisorption on their pillars, showing a concordance between the amounts of incorporated aluminumin the pillared clays and their fungicide adsorption capacity.
Palabras clave:
Fungicide Adsorption
,
Thiabendazole
,
Aluminum Pillared Clay
,
Adsorbents
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Articulos(INFAP)
Articulos de INST. DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Articulos de INST. DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Citación
Sapag, Manuel Karim; Infantes Molina, Antonia; Rodriguez Castellon, Enrique; Baschini, Miria Teresita; Roca Jalil, María Eugenia; Effect of the Al/clay ratio on the thiabendazol removal by aluminum pillared clays; Elsevier; Applied Clay Science; 87; 1-2014; 245-253
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