Artículo
Designed organomicaceous materials for efficient adsorption of iodine
Autor/es | Osuna Barroso, Francisco Javier
Pavón González, Esperanza Pazos, M. Carolina Alba, María D. |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2021 |
Fecha de depósito | 2022-10-13 |
Publicado en |
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Resumen | The anionic iodine 129I has a significant contribution to overall long-term dose resulting from the nuclear waste storage and its immobilization by clay barrier is crucial. Organoclays have been tested as ideal adsorption ... The anionic iodine 129I has a significant contribution to overall long-term dose resulting from the nuclear waste storage and its immobilization by clay barrier is crucial. Organoclays have been tested as ideal adsorption materials, being the clay layer charge and the length and type of organic molecules the most relevant parameters affecting the adsorption. In this work, a family of designed organomicas are explored in term of iodine adsorption capacity. Their adsorption capacities were always higher than that of the traditional clays and organoclays. C18-M4 shows a maximum monolayer adsorption capacity one order of magnitude higher than natural organoclays, with a free energy typical of physical adsorption and adsorption sites of high affinity. However, its surface is not homogeneous in terms of stability constant according to the Scatchard adsorption parameters. Hence, this study can provide a guidance for the design and construction of ultrahigh-capacity iodine adsorbents. |
Agencias financiadoras | Empresa Nacional de Residuos Radiactivos, S.A. (ENRESA) |
Identificador del proyecto | 0079000237 |
Cita | Osuna Barroso, F.J., Pavón González, E., Pazos, M.C. y Alba, M.D. (2021). Designed organomicaceous materials for efficient adsorption of iodine. Journal of Environmental Chemical Engineering, 9 (6), 106577. https://doi.org/10.1016/j.jece.2021.106577. |
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