The objective of this work was to study the influence of NaCl concentration, time, and current density on the removal efficiency of phenolic compounds by electrocoagulation process, as well as to compare the specific energy consumption (SEC) of these processes under different experimental conditions. Electrocoagulation was carried out on two different samples of water: model water of mimosa tannin and olive mill wastewater (OMW). Low carbon steel electrodes were used in the experiments. The properties of the treated effluent were determined using UV/Vis spectroscopy and by measuring total organic carbon (TOC). Percentage of removal increased with time, current density, and NaCl concentration. SEC value increased with increased time and current density but it was decreased significantly by NaCl additions (0-29 g L-1). It was found that electrocoagulation treatment of effluents containing phenolic compounds involves complex formation between ferrous/ferric and phenolic compounds.
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机译：这项工作的目的是研究电凝过程中NaCl浓度，时间和电流密度对酚类化合物去除效率的影响，并比较这些过程在不同实验条件下的比能耗（SEC）。对两种不同的水样品进行电凝：含羞草单宁的模型水和橄榄磨废水（OMW）。在实验中使用了低碳钢电极。使用UV / Vis光谱法和通过测量总有机碳（TOC）来确定处理后的废水的特性。去除百分比随时间，电流密度和NaCl浓度而增加。 SEC值随时间和电流密度的增加而增加，但添加NaCl（0-29 g L-1）则显着降低。已经发现，对含有酚类化合物的废水进行电凝处理涉及在亚铁/铁和酚类化合物之间形成络合物。
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