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Título : | Cadmium adsorption onto gamma-alumina nanoparticles: experimental and modelling study |
Autor : | Alonso, Ursula Mayordomo, Natalia Missana, Tiziana |
Palabras clave : | Cadmio Alumina Nanoparticulas Adsorción |
Fecha de publicación : | dic-2019 |
Editorial : | Editorial CIEMAT |
Citación : | Alonso U., Mayordomo N., Missana T., Cadmium adsorption onto gamma-alumina nanoparticles: experimental and modelling study, Informe Técnico CIEMAT 1465 (2019) |
Resumen : | Cadmium is one of the heavy metals of concern, both from the point of view of public health and
environmental safety, because it is a toxic element, bio-accumulative and persistent. Therefore, it is
considered of vital importance to develop materials and methodologies that favour its retention and
removal.
In this study, the retention of cadmium in a nanoparticulate oxide, -Al2O3 was analyzed. A
complete experimental sorption study in a wide range of chemical was carried out, to elucidate the
main retention mechanisms.
This study is part of a broader work, in which the sorption behaviour of mixed systems, including
clay materials that would form a geochemical barrier, was analysed. For analogy with previous
studies of retention of contaminants in clays, a non-electrostatic surface complexation model,
mechanistic and thermodynamic-based, was selected to describe Cd retention on -Al2O3.
The developed model was tested on experimental data and allows the prediction of cadmium
retention in different environmental scenarios. |
URI : | http://documenta.ciemat.es/handle/123456789/3300 |
ISSN : | 1135-9420 |
Aparece en las colecciones: | Informes de Fisión Nuclear
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