MERCURIO Y METALES TÓXICOS EN CENIZAS PROVENIENTES DE PROCESOS DE COMBUSTIÓN E INCINERACIÓN
In Mexico, most of the ashes from combustion and incineration process have not an appropriate disposal, since they are left on industrial yards and cliffs, thrown away in open spaces and then carried by the wind to places where they can harm population, affect aquatic sources or soils. To take preve...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | México |
| Institución: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositorio: | Revista Internacional de Contaminación Ambiental |
| Idioma: | español |
| OAI Identifier: | oai:ojs.pkp.sfu.ca:article/25141 |
| Acceso en línea: | https://www.revistascca.unam.mx/rica/index.php/rica/article/view/25141 |
| Access Level: | acceso abierto |
| Palabra clave: | mercury trace metals ashes combustion and incineration mercurio metales huella cenizas combustión incineración |
| Sumario: | In Mexico, most of the ashes from combustion and incineration process have not an appropriate disposal, since they are left on industrial yards and cliffs, thrown away in open spaces and then carried by the wind to places where they can harm population, affect aquatic sources or soils. To take prevention and control actions it is necessary the knowledge about the concentration of trace elements in waste ashes. In this study several oxidation methods for ashes digestion followed by inductively coupled plasma emission spectrometry were evaluated. Hg, Cd, Cr, Cu, Ni, Pb and V were determined in ashes from coal and fuel oil combustion, as well as in ashes from the incineration of municipal, water treatment’s sludge’s, and medical wastes. Results showed important concentrations of different trace element in the ashes. This suggests that adequate disposition of these wastes should be mandatory. On the other hand, trace element’s concentrations in the ashes´ leachates indicated that these wastes are not hazardous wastes by toxicity and they could be disposed in sanitary landfill. |
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