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Artículo

Importance of the Hydration Degree in the Use of Clay-Fungal Biocomposites as Adsorbents for Uranium Uptake

Olivelli, Melisa SoledadIcon ; Schampera, Birgit; Woche, Susanne K.; Torres Sanchez, Rosa MariaIcon ; Curutchet, Gustavo AndresIcon
Fecha de publicación: 03/2017
Editorial: American Chemical Society
Revista: Industrial & Engineering Chemical Research
ISSN: 0888-5885
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Bioremediación, Diagnóstico Biotecnológico en Gestión Medioambiental

Resumen

The development of new adsorbent materials is a key factor for applying sorption-based technologies designed to clean effluents. Clay biomass complexes (BMMT) from fungal biomass grown on a raw montmorillonite (MMT) were generated in a previous work and used in a wet state. These samples were examined previously as a material to retain metals and improve separation after adsorption processes. The objective of this study was to characterize the uranium(VI) adsorption of previously dried BMMT, to determine differences from wet BMMT samples, and to understand some of the processes responsible for those differences. The differences between dried and wet BMMT adsorption capacities were verified. Proton exchange of dried BMMT samples was analyzed. Furthermore, X-ray diffraction and ζ-potential measurements of the samples after uranium(VI) uptake were performed. The hydration degree during the adsorption contact time was evaluated. Contact-angle measurement and diffusion experiments by Fourier transform infrared spectroscopy were also conducted. Dried BMMT samples presented a higher uranium(VI) uptake capacity than wet BMMT samples. Biomass played an important role in the behavior of samples evaluated, and the results indicated the importance to specify the hydration degree of adsorbents.
Palabras clave: Uranium , Montmorillonite , Biosorption
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info:eu-repo/semantics/restrictedAccess 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/11336/72869
URL: https://pubs.acs.org/doi/abs/10.1021/acs.iecr.6b04881
DOI: http://dx.doi.org/10.1021/acs.iecr.6b04881
Colecciones
Articulos(CETMIC)
Articulos de CENTRO TECNOL.DE REC.MINERALES Y CERAMICA (I)
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Olivelli, Melisa Soledad; Schampera, Birgit; Woche, Susanne K.; Torres Sanchez, Rosa Maria; Curutchet, Gustavo Andres; Importance of the Hydration Degree in the Use of Clay-Fungal Biocomposites as Adsorbents for Uranium Uptake; American Chemical Society; Industrial & Engineering Chemical Research; 56; 10; 3-2017; 2824-2833
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