| Revue: | Journal of the Mexican Chemical Society |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000413561 |
| ISSN: | 1665-9686 |
| Autores: | Salimi, Farhad1 Tahmasobi, Keivan1 Karami, Changiz2 Jahangiri, Alireza3 |
| Instituciones: | 1Islamic Azad University, Department of Chemical Engineering, Kermanshah. Irán 2Islamic Azad University, Department of Chemical, Kermanshah. Irán 3Shahrekord University, Faculty of Engineering, Shahrekord. Irán |
| Año: | 2017 |
| Periodo: | Jul-Sep |
| Volumen: | 61 |
| Número: | 3 |
| Paginación: | 250-259 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en español | Nano-silice modificado con bismuto y hierro se evaluó como adsorbente de azul de metileno (MB) presente en solución acuosa. Los adsorbentes se caracterizaron por SEM, FTIR, XRD y TEM. El pH, tiempo de contacto y concentración inicial de MB fueron algunas variables estudiadas en el proceso de adsorción. Para una adsorción máxima de 20 mg/L MB se encontraron las siguientes condiciones óptimas: 20 minutos de tiempo, pH= 5-6 y 8 gr/L de adsorbente. Los resultados de adsorción se ajustaron al modelo de Freundlich mientras que la cinética de la tinta en el adsorbente se describe mediante un modelo de pseudo segundo orden. P |
| Resumen en inglés | Modified nano-silica with Bismuth and Iron adsorbent was synthesized to be used as an effective adsorbent material for methylene blue (MB) removal from water solution. The prepared samples were characterized using SEM, FTIR, XRD and TEM. The effect of experimental parameters such as pH, contact time and initial concentration on adsorption treatment were studied. Results indicated that the optimum conditions for maximum adsorption of 20 mg/L MB were: contact time of 20 minutes, pH= 5-6 and 8 gr/L adsorbent, the remaining MB in solution was 1.75%. Langmuir and Freundlich isotherms were employed to model the experimental results and the Freundlich isotherm was the best-fitting models for the experiment results. The kinetic data were also analyzed through pseudo-first-order and pseudo-second-order models. The pseudo-second-order kinetic model well depicted the kinetics of dyes adsorption on adsorbent |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería química, Sílice, Bismuto, Hierro, Azul de metileno, Adsorción, Nanopartículas |
| Keyword: | Engineering, Chemical engineering, Silica, Bismuth, Iron, Methylene blue, Adsorption, Nanoparticles |
| Texte intégral: | Texto completo (Ver HTML) |
