
handle: 10261/35665
[ES] La investigación se realiza en tres cenizas volantes españolas con contenidos de CaO entre 2-30% en peso. Para observar el proceso de lixiviación en estos subproductos industriales se lleva a cabo un ensayo similar al descrito por la EPA-EP. Las aguas lixiviadas se analizan por la técnica ICP, mientras que los residuos se caracterizan por difracción de rayos X y SEM-EDX. El estudio se centra en el seguimiento de los elementos más solubles, según la metodología aplicada, y en la formación de nuevas fases cristalinas secundarias. Además, se confirma la relación existente entre el pH de la disolución y el porcentaje de elemento extraído.
[EN] In this study, three Fly Ashes (FA) from Spanish Power Plants with CaO contents between 2-30% in weight were examined. They were leached using a variation on EPA-EP leaching test, checking the influence of the leaching process on FA. Leaches were analysed by ICP. XRD and SEM-EDX technique were used to analyse the leached FA. The study carried out was mainly centred in following the evolution of the most soluble elements and the formation of new secondary crystalline phases. The relationship between dissolution pH and the percentage of the extracted element was also confirmed.
Peer reviewed
Cenizas volantes, Aguas lixiviadas, lixiviación
Cenizas volantes, Aguas lixiviadas, lixiviación
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