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New Trends in Electrocoagulation for the Removal of Dyes from Wastewater: A Review

机译：电凝去除废水中染料的新趋势：综述

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摘要

Electrocoagulation (EC) is a powerful and environmentally friendly technology for the treatment of azo dyes, acid, and reactive dyes. This article reviews the fundamental and recent developments in EC and EC-coupled processes for the removal of dye from wastewater. EC processes utilize different electrolytic reactors, such as batch reactor, continuous reactor, and electrodes of monopolar and bipolar configurations. Different cathodes and anodes used in this process are discussed and the mechanisms are reviewed. Effects of various operating parameters like pH, the nature of electrolytes, electrolyte concentration, initial concentration of dye, current density, exposed area of electrodes, spacing of electrodes, temperature of solution, electrode configuration, and number of electrodes and their optimum ranges for dye removal are reviewed. Kinetic models and their reaction rate constants for different dyes are analyzed. Different dye pollutants removed by this process and their degradation are also reported.
机译：电凝（EC）是一种功能强大且环保的技术，用于处理偶氮染料，酸和活性染料。本文回顾了EC和EC耦合工艺从废水中去除染料的基础和最新进展。 EC工艺利用不同的电解反应器，例如间歇反应器，连续反应器以及单极和双极配置的电极。讨论了此过程中使用的不同阴极和阳极，并对其机理进行了综述。各种操作参数的影响，例如pH，电解质的性质，电解质浓度，染料的初始浓度，电流密度，电极的暴露面积，电极的间距，溶液的温度，电极的配置以及电极的数量及其最佳染料范围删除进行了审查。分析了不同染料的动力学模型及其反应速率常数。还报道了通过该方法去除的不同染料污染物及其降解。

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