Vol. 21 Núm. 1 (2019)
Artículo breve

Biolixiviación indicativa del sulfato de cobre por crecimiento microbiano ante el drenaje minero

Paola del Rosario Eyzaguirre Liendo
Universidad Nacional Jorge Basadre Grohmann, Facultad de Ciencias
Daladier Miguel Castillo Cotrina
Universidad Nacional Jorge Basadre Grohmann, Facultad de Ciencias

Publicado 2019-02-26

Palabras clave

  • drenaje ácido,
  • biolixiviación,
  • cobre,
  • extracción mineral

Cómo citar

Eyzaguirre Liendo, P. del R. ., & Castillo Cotrina, D. M. . (2019). Biolixiviación indicativa del sulfato de cobre por crecimiento microbiano ante el drenaje minero. Revista De Investigaciones Altoandinas, 21(1), 49–56. https://doi.org/10.18271/ria.2019.444

Resumen

La búsqueda de alternativas tecnológicas sostenibles para el drenaje ácido de minas es una actual necesidad. El propósito del estudio fue determinar la biolixiviación indicativa del sulfato de cobre mediante el crecimiento microbiano en el drenaje minero. Desde el 2014 hasta el 2015 se determinó de forma experimental la producción promedio máxima microbiana en lixiviados pertenecientes a cuatro botaderos del asiento minero de Toquepala de la Empresa Southern Perú Copper. Se encontró diferencias significativas (p <0.05) de la actividad microbiana entre las concentraciones del sulfato de cobre aplicadas (0.0; 5.0; 10.0; 15.0; 20.0 g.L-1) donde los resultados fueron (logaritmo de cel/ml): 8.90±0.03; 7.77±0.06; 7.20±0.07; 7.04±0.04 y 7.00±0.02. Se concluyó que, la biolixiviación indicativa del sulfato de cobre se asoció al crecimiento microbiológico como proceso tecnológico. Sin embargo, se requiere establecer diseños de experimentos para determinar aquellas reacciones que optimicen el crecimiento microbiano y que permitan garantizar mayores contendidos de sulfato de cobre, a partir de la biolixiviación.

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