Abstract

MORENO BALSECA, Alex Rodrigo  and  PALACIOS CABRERA, Teresa. Tratamiento de drenaje ácido de mina con el uso de zeolita natural a escala experimental. Figempa [online]. 2017, vol.4, n.2, pp.29-40. ISSN 2602-8484.  https://doi.org/10.29166/revfig.v1i2.67.

The present research project was carried out at the Instituto Nacional de Investigación Geológico Minero Metalúrgico (INIGEMM) with a total of 40 liters of water of Acid Mine Drainage (AMD) taken from the Quebrada “El Panteón”, Parroquia Torata, Cantón Santa Rosa, Provincia de El Oro. The AMD was treated through a treatment system which consisted of a series of two leach columns connected by flow through a peristaltic pump, which contained a mixture of reactive materials type Dispersed Alkaline Substrate (DAS), and the addition of natural zeolite as a filter medium. In the treatment system, 12 measurements of conductivity and pH were taken, while four measurements were taken for the analysis of metals (Al, Fe, Cu, Pb, Zn, Mn, and Cd) and SO4 2- anion. A final average of pH of treated AMD was 8.03 and a final average conductivity was 3,254mS/cm. The final average removal efficiency was Al (97.81%); Fe (99.79%); Cu (91.42%); Pb (83.33%); Zn (99.84%); Mn (96.14%); Cd (88.54%) and SO.2- (51.47%). The system has a high metal removal according to the results obtained, so the discharge complies with the national environmental regulations, except for the anion SO4 2-

Keywords : acid mine drainage; natural zeolite; experimental scale; heavy metals; dispersed alkaline substrate.

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