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Modelling a copper electrowinning cell based on reactive electrodialysis

机译:基于反应性电渗析对铜电积池进行建模

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This work reports the development of a mathematical model for the operation of a laboratory-scale copper electrowinning cell based on reactive electrodialysis (RED). Data were obtained from experiments and from the literature. The catho-dic reaction was copper electrodeposition and the anodic reaction was ferrous to ferric ion oxidation. The catholyte was aqueous cupric sulphate in sulphuric acid and the anolyte was aqueous ferrous sulphate in sulphuric acid. An anion membrane separated anolyte from catholyte while keeping a conductive path between them. The model includes (a) the cathodic and anodic kinetics, (b) the speciation of catholyte and anolyte and (c) ion transport through the membrane. The computer code was implemented in MATLAB software. The model was calibrated and validated and its predictions are in good agreement with experimental results for: amount of deposited copper, amount of produced Fe(III) species, cell voltage and specific energy consumption.
机译:这项工作报告了基于反应性电渗析(RED)的实验室规模的铜电解沉积池操作数学模型的开发。数据是从实验和文献中获得的。阴极反应是铜的电沉积,阳极反应是亚铁到三价铁离子的氧化。阴极电解液是在硫酸中的硫酸铜水溶液,而阳极电解液是在硫酸中的硫酸亚铁水溶液。阴离子膜将阳极电解液与阴极电解液分开,同时保持它们之间的导电路径。该模型包括(a)阴极和阳极动力学,(b)阴极电解质和阳极电解质的形态以及(c)离子通过膜的传输。该计算机代码在MATLAB软件中实现。该模型已经过校准和验证,其预测与以下实验结果非常吻合:沉积铜的量,产生的Fe(III)种类的量,电池电压和比能耗。

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