Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
J Hazard Mater. 2010 Jan 15;173(1-3):544-51. doi: 10.1016/j.jhazmat.2009.08.120. Epub 2009 Aug 31.
The decolorization of C.I. Basic Yellow 2 (BY2) by peroxi-coagulation process based on carbon nanotube-PTFE electrode as cathode was studied in a batch reactor. Response surface methodology (RSM) was employed to assess individual and interactive effects of the four main independent parameters (electrolysis time, initial pH, applied current and initial concentration of the dye solution) on the decolorization efficiency. A central composite design (CCD) was employed for the optimization of peroxi-coagulation treatment of BY2. A second-order empirical relationship between the response and independent variables was derived. Analysis of variance (ANOVA) showed a high coefficient of determination value (R(2)=0.949). Maximum decolorization efficiency was predicted and experimentally validated. The optimum electrolysis time, initial pH, applied current and initial dye concentration were found to be 16 min, 3, 200 mA and 15 mg l(-1), respectively. Under the optimum conditions established, high decolorization (>95%) was experimentally obtained for BY2. This study clearly showed that response surface methodology was one of the suitable methods to optimize the operating conditions. Graphical response surface and contour plots were used to locate the optimum point.
以碳纳米管-PTFE 电极作为阴极的过氧凝聚过程对 C.I.碱性黄 2（BY2）的脱色研究在批式反应器中进行。响应面法（RSM）用于评估四个主要独立参数（电解时间、初始 pH 值、施加电流和染料溶液初始浓度）对脱色效率的单独和交互影响。采用中心复合设计（CCD）对 BY2 的过氧凝聚处理进行优化。得出了响应和自变量之间的二阶经验关系。方差分析（ANOVA）表明，确定系数值（R(2)=0.949）较高。预测并实验验证了最大脱色效率。发现最佳电解时间、初始 pH 值、施加电流和初始染料浓度分别为 16 min、3、200 mA 和 15 mg l(-1)。在建立的最佳条件下，实验获得了 BY2 的高脱色率（>95%）。本研究清楚地表明，响应面法是优化操作条件的合适方法之一。图形响应面和等高线图用于定位最佳点。
