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首页> 美国卫生研究院文献>Data in Brief >Experimental data of a catalytic decolorization of Ponceau 4R dye using the cobalt (II)/NaHCO3/H2O2 system in aqueous solution
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Experimental data of a catalytic decolorization of Ponceau 4R dye using the cobalt (II)/NaHCO3/H2O2 system in aqueous solution

机译：钴（II）/ NaHCO3 / H2O2体系在水溶液中催化丽春红4R染料脱色的实验数据

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The treatment by Advanced Oxidation Processes (AOPs) of wastewater polluted with dyes is of particular interest in the field of environmental engineering, especially for the removal azo-dyes, representing over 50% of the global annual production of dyes. Unfortunately, most azo-dyes are non-biodegradable and can be toxic to aquatic organisms. This is the first data article that applies the methodology of response surface for the optimization of decolorization of an azo-compound using cobalt in a homogeneous medium as the catalyst of a bicarbonate activated hydrogen peroxide (BAP) system which, in turn, is an emerging technology for wastewater treatment. The Response Surface Methodology (RSM) based on a Central Composite Design (CCD) was used to evaluate and optimize the influence of three experimental variables (stoichiometric dosage of H O , molar ratio H O /NaHCO and cobalt concentration) on the decolorization of Ponceau 4R. Reactions were performed at 25 °C, pH 8.3 with a reaction time of 2 h. Analysis of variance (ANOVA) showed values of R and adjusted-R of 0.9815 and 0.9648, and experimental data were fit to a second-order regression model. The optimal conditions to achieve a maximum decolorization (96.31%) of a Ponceau 4R aqueous solution of 20 mg/l were: 4.73 times stoichiometric dosage of H O , molar ratio H O /NaHCO of 1.70 and cobalt concentration of 11.16 µM. Under the optimal reaction conditions, the influence of temperature (20, 25, 30 and 35 °C) on decolorization was evaluated and data were adjusted to second order kinetics. To verify the efficiency of the BAP system on the decolorization of Ponceau 4R, under the optimal conditions of reaction, UV–Vis spectra, at different reaction times, were measured. Additionally, blank experiments in order to evaluate the effect of individual factors in the Ponceau 4R decolorization, using BAP system, were carried out. Data showed that the Co(II)-NaHCO -H O system is a suitable technology for the decolorization of azo-dyes aqueous solutions.
机译：在环境工程领域，特别是对于去除偶氮染料而言，通过高级氧化工艺（AOP）处理被染料污染的废水尤为重要，占全球染料年产量的50％以上。不幸的是，大多数偶氮染料是不可生物降解的，并且对水生生物有毒。这是第一篇将响应表面方法应用于在均匀介质中使用钴作为碳酸氢盐活化的过氧化氢（BAP）系统催化剂的偶氮化合物的脱色优化的数据文章。废水处理技术。基于中央复合设计（CCD）的响应表面方法（RSM）用于评估和优化三个实验变量（化学计量的H O剂量，H O的摩尔比/ NaHCO和钴的浓度）对Ponceau 4R脱色的影响。反应在25°C，pH 8.3和2°h的反应时间下进行。方差分析（ANOVA）显示R值和调整后的R值分别为0.9815和0.9648，并且实验数据适合于二阶回归模型。实现Ponceau 4R水溶液最大脱色（96.31％）为20 mg / l的最佳条件为：H O的化学计量剂量的4.73倍，H O / NaHCO的摩尔比为1.70和钴浓度为11.16μM。在最佳反应条件下，评估了温度（20、25、30和35°C）对脱色的影响，并将数据调整为二级动力学。为了验证BAP系统对Ponceau 4R脱色的效率，在最佳反应条件下，测量了不同反应时间的UV-Vis光谱。另外，使用BAP系统进行空白实验，以评估各个因子在Ponceau 4R脱色中的作用。数据表明，Co（II）-NaHCO-HO系统是一种用于偶氮染料水溶液脱色的合适技术。

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