Industrial effluents containing cobalt ions have become a serious problem for the environment,\nunless properly treated, due to their toxic potential. Currently there has been an intensification of\nthe use of cobalt in several industrial sectors as super alloys, catalysts, batteries and pigments in\nceramic materials, and a consequent intensification also of environmental contamination. This\npaper aims to show a simple and effective treatment for the removal of cobalt ions from simulated\nindustrial wastewater, based on cathodic eletrolytic removal using a carbon steel screen. As a result,\na 73% removal of cobalt ions from solutions was achieved with a concentration of 400 mg\nCo2+/L, a current of 0.30 A and a voltage of 30 V. In the same conditions, 84% and 88% was removed\nfrom 200 mg Co2+/L and 100 mg Co2+/L, respectively. Thus, this method presents itself as a\ncheap and efficient alternative for the treatment of industrial effluents containing cobalt ions.
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