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首页> 外文期刊>Separation and Purification Technology >Combining fluidized metal-impregnated granular activated carbon in three-dimensional electrocoagulation system: Feasibility and optimization test of color and COD removal from real cotton textile wastewater
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Combining fluidized metal-impregnated granular activated carbon in three-dimensional electrocoagulation system: Feasibility and optimization test of color and COD removal from real cotton textile wastewater

机译：在三维电凝系统中结合流化金属浸渍的颗粒状活性炭：从真正的棉纺织废水中脱色和去除COD的可行性和优化测试

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摘要

The present study focused on the treatment of real cotton textile wastewater by combining metal (Al/Fe)-impregnated granular activated carbon (MIGAC) as moving particle electrodes in electrocoagulation, referred to here as the MIGAC-TEC system. The feasibility test clearly indicated that MIGAC significantly accelerated the decolorization and COD removal efficiency. The effects of four parameters: applied voltage, initial pH, MIGAC dosage, and reaction time on the percentage of color and COD removal were investigated using response surface methodology with a central composite design. As results, it was found that the decolorization (R-2 = 0.9576) and COD removal (R2 = 0.9395) were well fitted by a developed quadratic polynomial models and the initial pH was the most influential factor. Through numerical optimization, highly acceptable removal performances of 99.13 +/- 0.21% decolorization and 97.01 +/- 0.18% COD removal efficiency were achieved under statistically optimized conditions, and suggested that the developed system is a very suitable technique for the enhancement of electrocoagulation-based cotton textile wastewater treatment. (C) 2015 Elsevier B.V. All rights reserved.
机译：本研究的重点是通过在电凝过程中结合金属（Al / Fe）浸渍的颗粒状活性炭（MIGAC）作为移动粒子电极来处理真棉纺织废水，此处称为MIGAC-TEC系统。可行性测试清楚地表明，MIGAC显着提高了脱色和COD去除效率。使用具有中心复合设计的响应表面方法研究了四个参数的影响：施加电压，初始pH，MIGAC剂量和反应时间对颜色百分比和COD去除的影响。结果发现，通过开发的二次多项式模型可以很好地拟合脱色（R-2 = 0.9576）和COD去除（R2 = 0.9395），并且初始pH是影响最大的因素。通过数值优化，在统计学优化的条件下，获得了可接受的99.13 +/- 0.21％脱色脱色性能和97.01 +/- 0.18％COD去除效率的高度可接受的去除性能，表明该开发的系统是一种非常适合的增强电凝的技术-基础棉纺织废水处理。 （C）2015 Elsevier B.V.保留所有权利。

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