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Artículo

Thiabendazole adsorption on montmorillonite, octadecyltrimethylammonium- and Acremonium sp.-loaded products and their copper complexes

Gamba, MartinaIcon ; Olivelli, Melisa SoledadIcon ; Lazaro Martinez, Juan ManuelIcon ; Gaddi, Gisela MarinaIcon ; Curutchet, Gustavo AndresIcon ; Torres Sanchez, Rosa MariaIcon
Fecha de publicación: 03/2017
Editorial: Elsevier Science Sa
Revista: Chemical Engineering Journal
ISSN: 1385-8947
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
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Resumen

This study is a preliminary approach to develop novel montmorillonite (Mt) based adsorbents for removing inorganic and organic contaminants in a step-like process. Biomass (fungi) and surfactant (octadecyltrimethylammonium bromide) modified montmorillonites (BMt and OMt, respectively) were obtained. In a prior step, Cu2+ was loaded into Mt, BMt and OMt. In a second step, the materials (Mt, Mt-Cu, BMt, BMt-Cu, OMt, OMt-Cu) were used as thiabendazole (TBZ) adsorbents. TBZ adsorption isotherms were performed, and Langmuir, Freundlich and Langmuir-Freundlich mathematical models were evaluated. TBZ removal efficiency of the materials was also tested using three adsorbent dosages. The adsorbents and TBZ-adsorbed products were characterized by X-ray diffraction and thermal analysis, and by electron paramagnetic resonance (EPR) and solid-state nuclear magnetic resonance measurements (ss-NMR). To determine the subsequent arrangement of the adsorption products, leaching experiments were also conducted. In the BMt sample, TBZ adsorption was enhanced compared to the raw Mt sample. An opposite behaviour was observed for OMt samples. All the Cu2+-loaded materials showed better TBZ removal efficiencies than the same materials without Cu2+. Furthermore, Cu2+ chelation through the imidazolic and thiazolic nitrogen atoms of TBZ in all Cu2+-loaded samples allowed TBZ and Cu2+ to be resistant to migration in environmental leaching conditions.
Palabras clave: Adsorption , Bio-Montmorillonite , Montmorillonite , Organo-Montmorillonite , Thiabendazole-Cu2+ Complex
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/48943
DOI: https://dx.doi.org/10.1016/j.cej.2017.03.034
URL: https://www.sciencedirect.com/science/article/pii/S1385894717303728
Colecciones
Articulos(CETMIC)
Articulos de CENTRO TECNOL.DE REC.MINERALES Y CERAMICA (I)
Articulos(INIBIOLP)
Articulos de INST.DE INVEST.BIOQUIMICAS DE LA PLATA
Citación
Gamba, Martina; Olivelli, Melisa Soledad; Lazaro Martinez, Juan Manuel; Gaddi, Gisela Marina; Curutchet, Gustavo Andres; et al.; Thiabendazole adsorption on montmorillonite, octadecyltrimethylammonium- and Acremonium sp.-loaded products and their copper complexes; Elsevier Science Sa; Chemical Engineering Journal; 320; 3-2017; 11-21
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