Rehabilitación de una presa de residuos mineros mediante la aplicación de lodo de mármol y purín de cerdo para el desarrollo de una fitoestabilización asistida
- R. Zornoza 1
- A. Faz 1
- S. Martínez Martínez 1
- J. A. Acosta 1
- M. D. Gómez-López 1
- M. A. Muñoz 1
- R. Sánchez-Medrano
- F. J. Murcia
- F. J. Fernández Cortés
- E. López Martínez
- A. Espín de Gea
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1
Universidad Politécnica de Cartagena
info
ISSN: 0366-0176
Year of publication: 2017
Volume: 128
Issue: 2
Pages: 421-435
Type: Article
More publications in: Boletín geológico y minero
Abstract
Abandoned tailings ponds produce environmental and human health hazards due to the transfer of heavy metals through wind and water erosion or leaching. To reduce these hazards, a reclamation strategy has been developed on a tailings pond based on aided phytostabilization. In 2011 marble mud and pig slurry were applied to the surface of a tailings pond and in the spring of 2012 thirteen native vegetal species were introduced. The evolution of different soil properties and the bio-available fraction of the heavy metals Cd, Pb and Zn were monitored for two years (2012-2013). The results showed that the pH, aggregate stability, organic carbon, total nitrogen and cation exchange capacity increased after the application of the amendments and the growth of vegetation, whilst the bio-available fraction of the heavy metals drastically decreased (90-99%). Thus, the strategy followed proved to be positive for reducing the availability of heavy metals and improving soil quality and fertility. These results are promising in areas with extractive activity of carbonated materials, since the generated waste can be used for the reclamation of soils affected by heavy metals, transforming a residual material into a useful by-product.