Adsorption of Chromium(VI) on Radiation Grafted N,N-dimethylaminoethylmethacrylate onto Polypropylene, from Aqueous Solutions
Polypropylene (PP) grafted with dimethylaminoethyl- methacrylate (DMAEMA), was prepared by irradiation with a 60Co γ source. The obtained PP-g-DMAEMA was used to study the Cr(VI) ion adsorption as a function of contact time, initial pH, initial concen- tration of metal ion and temperature. Chromium...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:47527856002 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=47527856002 |
| Access Level: | acceso abierto |
| Palabra clave: | Química DMAEMA chromium adsorption thermodynamics Radiation grafting |
| Sumario: | Polypropylene (PP) grafted with dimethylaminoethyl- methacrylate (DMAEMA), was prepared by irradiation with a 60Co γ source. The obtained PP-g-DMAEMA was used to study the Cr(VI) ion adsorption as a function of contact time, initial pH, initial concen- tration of metal ion and temperature. Chromium adsorption data on PP-g-DMAEMA at various initial concentration fit well the Freundlich and Langmuir isotherms. The maximum adsorption capacity (amax) was found to be 0.3103 × 0-4 mol g-1. The thermodynamic parameters ΔH0, ΔG0 and ΔS0 were estimated showing the adsorption process to be exothermic and spontaneous. |
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