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Determination of Limiting Current Density, Plateau Length, and Ohmic Resistance of a Heterogeneous Membrane for the Treatment of Industrial Wastewaters with Copper Ions in Acid Media

机译:非均相膜的限制电流密度,平台长度和欧姆抗性的测定酸性介质铜离子处理工业废水的抗性

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In the last years, the electrodialysis process has been considered as an alternative to the chemical precipitation for the treatment of wastewaters from electroplating industries due to some limitations involved in the precipitation, as the sludge formation. For the success of the electrodialysis, some membranes properties have to be evaluated and the chronopotentiometry technique can be used. Hence, the present paper aimed at using chronopotentiometry for determining the limiting current density, plateau length, and ohmic resistance of the cationic heterogeneous HDX100 membrane by constructing current-voltage curves. The synthesized solution of the effluent from the electroplating industry evaluated was prepared with copper sulfate and sulfuric acid (2 g Cu~(2+)/L and pH 2). The chronopotentiometric curves were also evaluated for the study of the precipitate formation. According to the results, typical curves of monopolar membranes were obtained and the properties could be effectively determined by chronopotentiometry.
机译:在过去的几年中,电渗析方法被认为是由于沉淀的一些限制,作为污泥形成的一些限制,将电镀工艺视为从电镀行业处理废水的化学沉淀。对于电渗析的成功,必须评估一些膜特性并且可以使用计时管测量术技术。因此,目前纸张旨在通过构造电流 - 电压曲线来确定阳离子异质HDX100膜的限制电流密度,平台长度和欧姆电阻的速度计。用硫酸铜和硫酸(2g Cu〜(2 +)/ L和pH 2)制备来自电镀工业的流出物的合成溶液。还评估了计时表曲线以研究沉淀地层的研究。根据结果​​,获得了单极膜的典型曲线,可以通过时分测定法有效地确定性质。

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