RT Journal Article
T1 Environmental assessment and management of metal-rich wastes generated in acid mine drainage passive remediation systems
A1 Macías Suárez, Francisco
A1 Nieto Liñán, José Miguel
A1 Caraballo Monge, Manuel Antonio
AB As acid mine drainage (AMD) remediation is increasingly faced by governments and mining industries worldwide, the generation of metal-rich solid residues from the treatments plants is concomitantly raising. A proper environmental management of these metal-rich wastes requires a detailed characterization of the metal mobility as well as an assessment of this new residues stability. The European standard leaching test EN 12457-2, the US EPA TCLP test and the BCR sequential extraction procedure were selected to address the environmental assessment of Dispersed Alkaline Substrate (DAS) residues generated in AMD passive treatment systems. Significant discrepancies were observed in the hazardousness classification of the residues according to the TCLP or EN 12457-2 test. Furthermore, the absence of some important metals (like Fe or Al) in the regulatory limits employed in both leaching tests severely restricts their applicability for metal-rich wastes. The results obtained in the BCR sequential extraction suggest an important influence of the landfill environmental conditions on the metals released from the wastes. To ensure a complete stability of the pollutants in the studied DAS-wastes the contact with water or any other leaching solutions must be avoided and a dry environment needs to be provided in the landfill disposal selected.
PB Elsevier
SN 1873-3336 (electrónico)
SN 0304-3894
YR 2012
FD 2012
LK https://hdl.handle.net/10272/24840
UL https://hdl.handle.net/10272/24840
LA eng
NO Francisco Macías, Manuel A. Caraballo, José Miguel Nieto, Environmental assessment and management of metal-rich wastes generated in acid mine drainage passive remediation systems, Journal of Hazardous Materials, Volumes 229–230, 2012, Pages 107-114, ISSN 0304-3894, https://doi.org/10.1016/j.jhazmat.2012.05.080.
NO This study was funded by the Spanish Government project CGL2010-21956-C02-02. F. Macías was financially supported by the Spanish Government with a FPI PhD fellowship. Manuel A. Caraballo was financially supported by the Spanish Minister of Education and the Post-doctoral International Mobility Sub-programme I + D + i 2008–2011
DS Repositorio Institucional de la Universidad de Huelva
RD 2 jun 2026