Passive treatment of mine leachates with wastes generated from industrial effluents treatment

Authors

  • Ricardo Millán Becerro Departamento de Ciencias de la Tierra y Centro de Investigación en Recursos Naturales, Salud y Medio Ambiente (RENSMA). Universidad de Huelva
  • Sara Romero Cruz Departamento de Ciencias de la Tierra y Centro de Investigación en Recursos Naturales, Salud y Medio Ambiente (RENSMA). Universidad de Huelva
  • Rafael León Cortegano Departamento de Ciencias de la Tierra y Centro de Investigación en Recursos Naturales, Salud y Medio Ambiente (RENSMA). Universidad de Huelva
  • Rafael Pérez López Departamento de Ciencias de la Tierra y Centro de Investigación en Recursos Naturales, Salud y Medio Ambiente (RENSMA). Universidad de Huelva

DOI:

https://doi.org/10.55407/geogaceta95203

Keywords:

acid leachates, dispersed alkaline substrate technology, column esperiment

Abstract

The “Ría de Huelva” estuary (SW Spain), is seriously polluted by acid mine leachates and phosphate fertilizer industry effluents. This work evaluates the effectiveness of calcite (CaCO3)-rich solid wastes generated during the treatment of industrial effluents with the Dispersed Alkaline Substrate (DAS) technology, for the passive treatment of highly acidic and contaminated mine waters. The study consists of flowing the mine water through a column filled with a mixture of an alkaline reactive (i.e., calcite resulting from the treatment of phosphogypsum leachates) dispersed in an inert matrix (i.e., wood chips) to raise the pH of acidic water and consequently decrease the solubility of dissolved contaminants. The proposed treatment achieved the total removal of Al, Fe, Cu, Cd and rare earth elements and Y (REY). The solubility of the contaminants during the treatment was probably controlled by co-precipitation and/or adsorption processes onto Fe and Al oxyhydroxides-oxyhydroxysulfates. This work contributes to the minimization of the economic and environmental costs of mine water treatment with DAS technology.

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Published

2023-06-05

How to Cite

Millán Becerro, R., Romero Cruz, S., León Cortegano, R. ., & Pérez López, R. . (2023). Passive treatment of mine leachates with wastes generated from industrial effluents treatment. GEOGACETA, 73, 59–62. https://doi.org/10.55407/geogaceta95203

Issue

Vol. 73 (2023): January-June

Section

Artículos

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Until the year 2023 the author assigned the copyright to the Sociedad Geológica de España, but from 2024 the author retains the copyright and grants the Sociedad Geológica de España the right of first publication and non-exclusive distribution of each article in all current or future media, while transferring, also non-exclusively, the commercial rights for the distribution of the printed version of Geogaceta. On the other hand, the articles, from the year 2023, are available simultaneously with their publication, under the Creative Commons CC BY-NC-SA 4.0 license, which allows copying, transforming the work, but if any transformation is distributed, the new work must be distributed under the same license, and never for commercial purposes, while acknowledging the authorship and original publication in GEOGACETA, so that the only role of copyright is to give authors control over the integrity of their works and the right to be properly acknowledged and cited.

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