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Resumen.- Se desarrollo carbon activado modificado (CAM) por la presencia de cobre metalico y sales de cobre (CuSO4,CuCl2, Cu(NO3)2) impregnadas en su estructura microporosa con una superficie especifica de 600 m2/g. Se estudio la influencia del ion cuprico y del cobre metalico en la oxidacion del ion cianuro con aire y CAM mediantesoluciones sinteticas de cianuro de sodio, en lechos fluidizados agitados, utilizando 80 g/L de CAM, a pH de 10.5y 190 N L/h de aire. Se logro oxidar el 99% de ion cianuro en 180 min, pudiendose reutilizar el CAM por varias veces. Ensayos realizados con el CAM y efluentes industriales del proceso de cianuracion-carbon en pulpa de mineralespolisulfurados, presentaron la oxidacion del 99.5% de cianuro libre, incrementando 26 veces la velocidaddel proceso. Abstract.- Modified active carbon (CAM) was developed by impregnation of metallic copper and copper salts (CuSO4,CuCl2, Cu(NO3)2) on the microporous structure of an activated carbon (600m2/g of specific surface). The influenceof the cupric ion and the metallic copper on the oxidation of the cyanide ion with air and CAM was studied usingsynthetic solutions of sodium cyanide in fluidized bed reactors employing 80 g/L CAM, pH = 10.5 and 190N L/hof air. An oxidation of 99.0% of the cyanide ion was achieved after 180 min. CAM was reused several times forfurther procedures. Different tests were run using CAM and industrial effluents from processes of cyanidationcarbonin pulp of polysulfide minerals that showed an oxidation of free cyanide of 99.5 %, thus, increasing 26 timesthe oxidation process velocity.

Influencia del ion cúprico y del cobre metlico en la oxidación del cianuro libre con aire y carbón activado