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Estudio de las variaciones mineralógicas y morfológicas en cenizas volantes provocadas por fenómenos de lixiviación

Authors: Marta, J.; Sánchez de Rojas, María Isabel; Frías, Moisés;

Estudio de las variaciones mineralógicas y morfológicas en cenizas volantes provocadas por fenómenos de lixiviación

Abstract

[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

Keywords

Cenizas volantes, Aguas lixiviadas, lixiviación

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green