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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1582| ADSORPTION OF ARSENIC (III) BY IRON OXIDES IN DRINKING Water | |
| MIRIAM ZSAZSA LOPEZ PARAGUAY MARIA TERESA ALARCON HERRERA | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| arsenic | |
| The aim of this work is to characterize a material that consists of native Fe-oxide and evaluate its potential in the removal of Arsenic (As3±) from the water through adsorption mechanisms. The surface area of the adsorbent was 3.10 m2/g. X-ray diffraction indicates that the material contains 56% Fe2O3, 25.20% Fe3O4, 14.80% FeO, and 3.50% metallic Fe. The experimental analysis was conducted with a solution containing 100 μg/L of As3±. The amount of Fe-oxide in the solution varied from 0.5 to 30 g/L (followed by a constant agitation of 150 rpm). The results indicate 100% efficiency in the removal of As3± was achieved in 3 hours using Fe-oxide at concentrations of 20 to 30 g/L. 85.2% of the As3± was removed in 4 hours and 99% in 6 hours, both using a solution with 10 g/L of Fe-oxide. The maximum adsorption capacity of the material was 164 μg/g whereas 89% of the As3± was removed in 2 hours using a solution of 20 g/L of Fe-oxide. These results are in agreement with the recommended international requirements for human water consumption. | |
| 2009 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| Miriam 10 icobte.pdf | 143.98 kB | Adobe PDF | Visualizar/Abrir |