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Procesos de oxidación de pirita en medios superficiales: potencial acidificante e interés para la recuperación de suelos de mina

Pyrite oxidation processes in surface systems: acidifying potential and its interest in minesoils reclamation
Authors: Urrutia, M. M.; Graña, J.; García-Rodeja, R.; Macías Vázquez, F.;

Procesos de oxidación de pirita en medios superficiales: potencial acidificante e interés para la recuperación de suelos de mina

Abstract

[Resumen] Se analizan los mecanismos de oxidación de pirita, considerando las diferentes vías de evolución admitidas en la bibliografía, la influencia de las condiciones del medio (Eh, pH, microorganismos, etc.), la naturaleza de los productos formados y su potencial acidificante en distintas condiciones. Como ejemplo se presentan datos obtenidos en el estudio de dos explotaciones mineras en rocas anfibolíticas ricas en sulfuros de las proximidades de Santiago de Compostela. Se concluye la necesidad del conocimiento de estos procesos para una mejor planificación de las medidas de control del impacto ambiental en suelos, aguas y organismos, así como de los procedimientos más adecuados para la recuperación de escombreras y «suelos de mina».

[Abstract] Some aspects of pyrite oxidation mechanism such as the evolution pathways recognized in the literature, the influence of environmental conditions (Eh, pH, microorganism, etc.), nature of formed products and acidifying potential under different conditions are revised. As an example, the results obtained in a study of two mines in sulphide rich amphibolitic rocks near Santiago de Compostela, are included. It is concluded the need of the knowledge of these processes in order to improve the planification of the methods to control environmental iropacts in soils, waters and organisms, as well as to establish the most suitable procedures for waste materials and minesoils reclamation.

Country
Spain
Related Organizations
Keywords

Acidification, pH-EH conditions, Acidificación, Pyrite oxidation, Oxidación de pirita, Condiciones de pH-EH

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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