Microorganismos potenciales degradadores de cianuro en residuos de minería de oro
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Cardona Giraldo, Edwin Alexis
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Trabajo de grado - Maestría
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EspañolFecha de publicación
2015-11-28
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El cianuro es un compuesto químico utilizado para la extracción de oro. Este, provoca la contaminación de fuentes de agua y suelo. En este trabajo se evaluó la capacidad de las bacterias de efluentes de la minería de oro para degradar el cianuro. Para el desarrollo de este trabajo, las bacterias de residuos de la minería de oro fueron aisladas. Se realizaron experimentos in vitro y en suelo bajo condiciones de invernadero con plantas para la degradación de cianuro. Como resultado, se encontró seis morfotipos de bacterias tolerantes y capaces de degradar las concentraciones de cianuro de 100 a 400 ppm. Dos bacterias fueron las más eficientes degradantes de cianuro en condiciones in vitro. Sin embargo, los resultados de biorremediación no mostraron que la degradación por bacterias y plantas fueron significativas respecto al ensayo in vitro.
Abstract: Cyanide is a chemical compound used for gold extraction. This, causes pollution in soil and water sources. In this work, the ability of effluent bacteria from gold mining to degrade the cyanide was evaluated. For the development of this work, bacteria from gold mining waste were isolated. The experiments were performed in vitro conditions and in greenhouse soil with plants for tests cyanide degradation. As a result, It was found six morphotypes bacteria tolerant and capable of degrading cyanide concentrations from 100 to 400 ppm. Two bacteria were the most efficient cyanide degrading in vitro. However, the biorremedation results did not show that the degradation by bacteria and plants were significant respect to the tesh in vitro
Abstract: Cyanide is a chemical compound used for gold extraction. This, causes pollution in soil and water sources. In this work, the ability of effluent bacteria from gold mining to degrade the cyanide was evaluated. For the development of this work, bacteria from gold mining waste were isolated. The experiments were performed in vitro conditions and in greenhouse soil with plants for tests cyanide degradation. As a result, It was found six morphotypes bacteria tolerant and capable of degrading cyanide concentrations from 100 to 400 ppm. Two bacteria were the most efficient cyanide degrading in vitro. However, the biorremedation results did not show that the degradation by bacteria and plants were significant respect to the tesh in vitro
Abstract
Palabras clave
Biorremediación ; Cianuro ; Degradación ; Minería de oro ; Bacterias ; Contaminación ; Cyanide ; Bacteria ; Gold Mining ; Contamination ; Degradation