In this work, a new methodology has been developed for the elimination of cobalt, nickel and a mixture of both metals from synthetic wastewater in a continuous way. This methodology consists of the electrochemical formation of ferrites of these metals through the oxidation of iron sheets and the reduction of water. Two critical process parameters, current densities and initial pollutant concentration, were analysed. An initial batch prototype resulted in efficiencies on the order of 98% under conditions of applied densities of 50 mA/cm² and concentrations of both metals of until 100 ppm of the ions. The obtained particles have been characterized by X-ray diffraction to determine the formation of ferrites without the appearance of secondary phases. The formed particle sizes are approximately 30 nm, with hemispherical or flower-like shapes. A flow system prototype was designed for the recirculation of the solution with 100 ppm of both contaminating metals, obtaining approximately 90% recovery with an easy magnetic harvesting.

在这项工作中，开发了一种新方法，用于以连续方式从合成废水中去除钴、镍和这两种金属的混合物。该方法包括通过铁皮的氧化和水的还原来电化学形成这些金属的铁氧体。分析了两个关键工艺参数，电流密度和初始污染物浓度。在应用密度为 50 mA/cm ^{2 的}条件下，初始批次原型的效率约为 98%和两种金属的浓度直到 100 ppm 的离子。获得的颗粒已通过 X 射线衍射表征，以确定铁氧体的形成，而没有出现二次相。形成的粒径约为30 nm，呈半球形或花状。流动系统原型设计用于溶液的再循环，其中含有 100 ppm 的两种污染金属，通过简单的磁性收集获得大约 90% 的回收率。