Las afiliaciones filogenéticas dominantes de las bacterias fueron determinadas por secuenciación del gen RNAr 16S. La combinación de métodos microbiológicos y herramientas moleculares permitieron inferir la presencia de una población dominante y la composición cambió tanto en lugares de origen como con el método usado. El tratamiento con la ayuda de microorganismos, puede ser usado efectivamente para reducir la carga de productos químicos nocivos en el medio ambiente. Keywords: cyanide bacterial diversity TTGE gold processing plants, 16S rRNA geneĮl cianuro es un componente básico de muchos procesos industriales, entre los cuales se encuentra el procesamiento de oro, sin embargo, es muy tóxico e incluso letal. This study provides information about the presence of a diverse bacterial community associated with residual effluents from cyanidation processes in Colombia and suggests that their presence could play a role in the biological degradation of cyanide compounds, offering an alternative for mining wastewater treatment. The isolates identified, as Bacillus and Enterococcus were capable to degrade 41.9 and 27.5 mg CN - L -1 respectively. The dominant phylogenetic affiliations of the bacteria were determined by sequencing the 16S rRNA gene. The combination of microbiological methods and molecular tools allowed inferring the presence of a dominant population and the composition varied both in the places of origin and in the method used. Treatment, with the help of microorganisms, can be used effectively to reduce the load of harmful chemicals into the environment. Cyanide is the basic component of many industrial processes, among which is gold processing, being very toxic or even lethal.

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