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A Comparison of Central Composite Design and Taguchi Method for Optimizing Fenton Process

机译：优化Fenton工艺的中央复合设计与Taguchi方法的比较。

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摘要

In the present study, a comparison of central composite design (CCD) and Taguchi method was established for Fenton oxidation. [Dye]ini, Dye : Fe+2, H2O2 : Fe+2, and pH were identified control variables while COD and decolorization efficiency were selected responses. L 9 orthogonal array and face-centered CCD were used for the experimental design. Maximum 99% decolorization and 80% COD removal efficiency were obtained under optimum conditions. R squared values of 0.97 and 0.95 for CCD and Taguchi method, respectively, indicate that both models are statistically significant and are in well agreement with each other. Furthermore, Prob > F less than 0.0500 and ANOVA results indicate the good fitting of selected model with experimental results. Nevertheless, possibility of ranking of input variables in terms of percent contribution to the response value has made Taguchi method a suitable approach for scrutinizing the operating parameters. For present case, pH with percent contribution of 87.62% and 66.2% was ranked as the most contributing and significant factor. This finding of Taguchi method was also verified by 3D contour plots of CCD. Therefore, from this comparative study, it is concluded that Taguchi method with 9 experimental runs and simple interaction plots is a suitable alternative to CCD for several chemical engineering applications.
机译：在本研究中，建立了中心复合设计（CCD）和Taguchi方法进行Fenton氧化的比较。 [Dye] ini，Dye：Fe +2 ，H2O2：Fe +2 和pH值是控制变量，而COD和脱色效率则作为响应。实验设计采用L 9正交阵列和面心CCD。在最佳条件下，可获得最大99％的脱色率和80％的COD去除率。 CCD和田口方法的R平方值分别为0.97和0.95，表明这两个模型具有统计学意义，并且彼此之间具有很好的一致性。此外，Prob> F小于0.0500，方差分析结果表明所选模型与实验结果吻合良好。然而，根据对响应值的贡献百分比来对输入变量进行排名的可能性使Taguchi方法成为检查运行参数的合适方法。就目前的情况而言，具有87.62％和66.2％的百分比贡献的pH值被认为是贡献最大，最重要的因素。 Taguchi方法的这一发现也通过CCD的3D等高线图得到了证实。因此，从这项比较研究中得出的结论是，具有9个实验运行和简单交互作用图的Taguchi方法是CCD在某些化学工程应用中的合适替代方法。

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