Studies on the decolorization of textile dye wastewater by continuous electrocoagulation process
Studies on the decolorization of textile dye wastewater by continuous electrocoagulation process
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DOI：
10.1016/j.cej.2008.10.018
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发表时间：
2009-07
影响因子：
15.1
通讯作者：
Belkacem Merzouk;B. Gourich;A. Sekki;Khodir Madani;C. Vial;M. Barkaoui
中科院分区：
文献类型：
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作者：
Belkacem Merzouk;B. Gourich;A. Sekki;Khodir Madani;C. Vial;M. Barkaoui
研究了铝电极连续电凝聚法对模拟印染废水的脱色和COD去除效果。相关的废水特性，如电导率，进水pH值和入口染料浓度的影响，但也的关键操作条件，如电流密度和停留时间进行了研究，以优化工艺性能。结果表明，当pH值为6 ~ 9，停留时间为14 min，电流密度为31.25mA/cm 2，水电导率为2.4mS/cm，电极间距为1cm时，对COD为2500 mg/L，染料浓度小于200 mg/L的废水，红色染料的脱色率可达85%以上。在此条件下，COD去除率也高于80%。
The performance of a continuous electrocoagulation (EC) process was investigated for decolorization and chemical oxygen demand (COD) abatement of a synthetic textile wastewater using aluminum electrodes. The effects of the relevant wastewater characteristics such as conductivity, influent pH and inlet dye concentration, but also of the key operating conditions such as current density and residence time were studied in order to optimize process performance. The results showed that color induced by a red dye was effectively removed (with a removal yield higher than 85%) for wastewater with a COD of 2500mg/L and a dye concentration lower than 200mg/L when pH ranged from 6 to 9, residence time was 14min, current density was 31.25mA/cm2and water conductivity was 2.4mS/cm for an inter-electrode distance of 1cm. Under these conditions, the COD abatement was also higher than 80%.