Sludges produced by the physico-chemical treatments of waste waters generated by electroplating plants were physically and chemically characterised and incorporated in ceramic pastes. The influence of the amount of sludges added to a typical brick composition on the various processing steps and on the green and fired properties was studied. The environmental risks of the incorporation of these sludges rich in heavy metals such as Cr, Pb, Zn, Cu, Ni, etc. were evaluated by performing leaching tests on the fired products. The results showed that sludge contents up to 15 % could be incorporated without affecting significantly the physical characteristics of the ceramic products. Furthermore, a successful inertization of the pollutants was achieved.Key words: Recycling, Sludges, Heavy metals, Environment, Wastes. Inertizaci-n de lodos galv ‡nicos para su incorporaci-n a productos cer ‡micosSe han caracterizado desde el punto de vista qu'mico y f'sico lodos procedentes de las aguas residuales de procesos de galvanizado. Posteriormente se han incorporado a pastas cer ‡micas, convencionales de la industria ladrillera, estudi ‡ndose la influencia de las cantidades a-adidas sobre las propiedades de los materiales tanto en verde como en el producto final y durante las distintas etapas de fabricaci-n. Se evaluaron los riesgos medioambientales derivados de la incorporaci-n de los metales pesados, tales como Cr, Pb, Zn, Cu, Ni etc, presentes en los lodos, mediante la realizaci-n de ensayos de lixiviado. Los resultados indican que puede incorporarse hasta un 15% en peso de dichos lodos, sin que se produzcan cambios significativos en las propiedades f'sicas de los materiales cer ‡micos obtenidos. Se ha obtenido, asimismo, un procedimiento viable de inertizaci-n de los agentes contaminantes.
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