RT Journal Article
T1 From highly polluted Zn-rich acid mine drainage to non-metallic waters: implementation of a multi-step alkaline passive treatment system to remediate metal pollution
A1 Rötting, Tobias
A1 Ayora, Carlos
A1 Macías Suárez, Francisco
A1 Caraballo Monge, Manuel Antonio
A1 Nieto Liñán, José Miguel
A1 Pérez López, Rafael
AB Complete metal removal from highly-polluted acid mine drainage was attained by the use of a pilot multi-step passive remediation system. The remediation strategy employed can conceptually be subdivided into a first section where the complete trivalent metals removal was achieved by the employment of a previously tested limestone-based passive remediation technology followed by the use of a novel reactive substrate (caustic magnesia powder dispersed in a wood shavings matrix) obtaining a total divalent metals precipitation. This MgO-step was capable to abate high concentrations of Zn together with Mn, Cd, Co and Ni below the recommended limits for drinking waters. A reactive transport model anticipates that 1 m3 of MgO-DAS (1 m thick x 1 m2 section) would be able to treat a flow of 0.5 L/min of a highly acidic water (total acidity of 788 mg/L CaCO3) during more than 3 years.
PB Elsevier
SN 1879-1026 (electrónico)
SN 0048-9697
YR 2012
FD 2012
LK https://hdl.handle.net/10272/24836
UL https://hdl.handle.net/10272/24836
LA eng
NO Francisco Macías, Manuel A. Caraballo, Tobias S. Rötting, Rafael Pérez-López, José Miguel Nieto, Carlos Ayora, From highly polluted Zn-rich acid mine drainage to non-metallic waters: Implementation of a multi-step alkaline passive treatment system to remediate metal pollution, Science of The Total Environment, Volume 433, 2012, Pages 323-330, ISSN 0048-9697, https://doi.org/10.1016/j.scitotenv.2012.06.084.
NO This research was financed by the Spanish Ministry of Education and Science through project CGL2010-21956-C02. F. Macías was financially supported by the Spanish Government with a FPI PhD fellowship. The assistance of Cristóbal Cantero for EPMA analysis at the Central Research Services of the University of Huelva is gratefully acknowledged. R. Pérez-López also thanks the Spanish Minister of Science and Innovation and the ‘Ramón y Cajal’ Subprogramme (MICINN-RYC 2011). Manuel A. Caraballo was financially supported by the Spanish Ministry of Education and the Post-doctoral International Mobility Subprogramme I+D+i 2008–2011. The comments and helpful criticisms of an anonymous reviewer and the support of the Editors, Dr. Damià Barceló and Dr. Filip M.G. Tack, have considerably improved the original manuscript and are also gratefully acknowledged.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026