The search for sustainable technological alternatives for acid mine drainage is a current necessity. The purpose of the study was to determine the bioleaching of copper sulphate by microbial growth under mining drainage conditions. From 2014 to 2015, the maximum average microbial production in leachates belonging to four dumps of the Toquepala mining site of the Southern Perú Copper Company was determined experimentally. Statistically significant differences (p <0.05) were found between the averages of the microbial activity in relation to the concentrations of the copper sulphate (0.0; 5.0; 10.0; 15.0; 20.0 g.L-1) where the results were (logarithm of cel/ml): 8.90±0.03; 7.77±0.06; 7.20±0.07; 7.04±0.04 and 7.00±0.02. It was concluded that the indicative bioleaching of copper sulphate was associated with microbiological growth as a technological process. However, it is necessary ...

La biolixiviación de cobre es un proceso en el cual el mineral de baja ley es oxidado por microorganismos para solubilizar el metal de interés. El proceso tiene como primera etapa la oxidación de fierro presente en el mineral que puede ser calcopirita, por parte de los microorganismos. Este proceso es más rentable frente a otros métodos convencionales de minería. En este trabajo se estudió la influencia de la concentración de cobre en la bioxidación del fierro, en el crecimiento microbiano y en el grado de correlación entre estos procesos. Se instaló un sistema de 5 tratamientos, cada uno con dos repeticiones experimentales y una repetición control. La concentración de cobre de cada tratamiento fue 0, 5, 10, 15 y 20 g/L. Se adicionó medio de cultivo 9K líquido (Silverman y Lundgren, 1959) a pH 1,8. Sólo para los tratamientos experimentales se utilizó un inóculo microbia...

La búsqueda de alternativas tecnológicas sostenibles para el drenaje ácido de minas es una necesidad. El propósito del estudio fue analizar de forma exploratoria la biolixiviación del cobre como tecnología de extracción del mineral. Desde el 2014 hasta el 2015 se determinó la producción promedio máxima microbiana de lixiviados pertenecientes a cuatro botaderos del asiento minero de Toquepala pertenecientes a la Empresa Southern Perú Coper. Las concentraciones promedio con relación a la determinación de cobre (0, 5, 10, 15, 20) fueron: 8,903089987 ± 0,026; 7,778151250 ± 0,058, 7,204119983 ± 0,071, 7,041392685 ± 0,039 y 7,000000000 ± 0,016 donde se encontró diferencias estadísticamente significativas (p<0,05). Los resultados experimentales indicaron que, el cobre puede extraerse mediante el proceso de biolixiviación.

The search for sustainable technological alternatives for acid mine drainage is a current necessity. The purpose of the study was to determine the bioleaching of copper sulphate by microbial growth under mining drainage conditions. From 2014 to 2015, the maximum average microbial production in leachates belonging to four dumps of the Toquepala mining site of the Southern Perú Copper Company was determined experimentally. Statistically significant differences (p <0.05) were found between the averages of the microbial activity in relation to the concentrations of the copper sulphate (0.0; 5.0; 10.0; 15.0; 20.0 g.L-1) where the results were (logarithm of cel/ml): 8.90±0.03; 7.77±0.06; 7.20±0.07; 7.04±0.04 and 7.00±0.02. It was concluded that the indicative bioleaching of copper sulphate was associated with microbiological growth as a technological process. However, it is necessary ...

The search for sustainable technological alternatives for acid mine drainage is a current necessity. The purpose of the study was to determine the bioleaching of copper sulphate by microbial growth under mining drainage conditions. From 2014 to 2015, the maximum average microbial production in leachates belonging to four dumps of the Toquepala mining site of the Southern Perú Copper Company was determined experimentally. Statistically significant differences (p <0.05) were found between the averages of the microbial activity in relation to the concentrations of the copper sulphate (0.0; 5.0; 10.0; 15.0; 20.0 g.L-1) where the results were (logarithm of cel/ml): 8.90±0.03; 7.77±0.06; 7.20±0.07; 7.04±0.04 and 7.00±0.02. It was concluded that the indicative bioleaching of copper sulphate was associated with microbiological growth as a technological process. However, it is necessary ...