Industrial effluents containing cobalt ions have become a serious problem for the environment, unless properly treated, due to their toxic potential. Currently there has been an intensification of the use of cobalt in several industrial sectors as super alloys, catalysts, batteries and pigments in ceramic materials, and a consequent intensification also of environmental contamination. This paper aims to show a simple and effective treatment for the removal of cobalt ions from simulated industrial wastewater, based on cathodic eletrolytic removal using a carbon steel screen. As a result, a 73% removal of cobalt ions from solutions was achieved with a concentration of 400 mg Co2+/L, a current of 0.30 A and a voltage of 30 V. In the same conditions, 84% and 88% was removed from 200 mg Co2+/L and 100 mg Co2+/L, respectively. Thus, this method presents itself as a cheap and efficient alternative for the treatment of industrial effluents containing cobalt ions.
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机译：含有钴离子的工业废水由于其潜在毒性，除非经过适当处理，否则已成为严重的环境问题。当前，在一些工业领域中，钴在陶瓷材料中作为超合金，催化剂，电池和颜料的使用正在增加，并且随之而来的是环境污染的增加。本文旨在展示一种简单有效的处理方法，该方法基于碳钢筛网的阴极电解去除，从而从模拟工业废水中去除钴离子。结果，在浓度为400 mg Co2 + / L，电流为0.30 A，电压为30 V的情况下，从溶液中去除了73％的钴离子。在相同条件下，从溶液中去除了84％和88％的钴。 200 mg Co2 + / L和100 mg Co2 + / L。因此，该方法本身是用于处理含钴离子工业废水的一种廉价而有效的替代方法。
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