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首页> 外文期刊>Journal of industrial and engineering chemistry >Application of response surface methodology to the decolorization by the electrochemical process using FePMo12O40 catalyst
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Application of response surface methodology to the decolorization by the electrochemical process using FePMo12O40 catalyst

机译：响应面法在FePMo12O40催化剂电化学脱色中的应用

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摘要

In order to optimize the experimental conditions, the decolorization of Acid Red 3R by electrochemical oxidation process with catalyst FePMo12-APS-MS4A as packing was performed using response surface methodology (RSM). The microstructure and morphology of FePMo12-APS-MS4A were characterized with Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray fluorescence spectroscopy (XRF). Four control factors were throughly analyzed by means of RSM based on Box-Behnken design (BBD). Taking the decolorization efficiency as response value, a second order polynomial model was established. The model and analysis strongly indicated that the cell voltage and airflow caused positive, and the initial pH and inter-electrode distance caused negative effect on the decolorization efficiency. The interaction between cell voltage and initial pH, initial pH and airflow were also revealed. Under the optimal conditions, the color, COD and TOC removal efficiency reached 67.3%, 58.4% and 47.9% after 60 mm. Liquid chromatography-mass spectrometry (LC-MS) analysis revealed that the dye molecule underwent a series of reduction and oxidation steps, including azo bond fracture, desulfonation and denitrogenation. The possible mechanisms involving in this reaction process were proposed. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：为了优化实验条件，使用响应表面法（RSM）通过FePMo12-APS-MS4A催化剂的电化学氧化对酸性红3R进行了脱色。 FePMo12-APS-MS4A的微观结构和形貌通过傅里叶变换红外光谱（FT-IR），X射线衍射（XRD），扫描电子显微镜（SEM）和X射线荧光光谱（XRF）进行了表征。通过基于Box-Behnken设计（BBD）的RSM全面分析了四个控制因素。以脱色效率为响应值，建立了二阶多项式模型。该模型和分析强烈表明，电池电压和气流引起正电，初始pH和电极间距离对脱色效率产生负影响。还揭示了电池电压与初始pH，初始pH和气流之间的相互作用。在最佳条件下，60 mm后的颜色，COD和TOC去除效率分别达到67.3％，58.4％和47.9％。液相色谱-质谱（LC-MS）分析表明，染料分子经历了一系列还原和氧化步骤，包括偶氮键断裂，脱硫和脱氮。提出了该反应过程可能涉及的机理。 （C）2014韩国工业和工程化学学会。由Elsevier B.V.发布。保留所有权利。

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