Abstract
This study aimed to propose a mathematical method to investigate and optimize the simultaneous elimination process of multiple organic pollutants using the Fenton process. Hence, the treatment of rhodamine B (RB) and acid red 14 (AR14) dyes in their binary solution was studied. Multivariate curve resolution alternating least square (MCR-ALS), a novel chemometric method, was applied along with correlation constraints to resolute the UV-Vis spectrophotometric data, enabling quantification of investigated dyes despite a high spectral overlapping. Response surface methodology was adopted to assess the model and optimize individual and interactive effects of three independent factors (Fe2+, H2O2 and initial pH) on the simultaneous elimination of RB and AR14. The values of the regression coefficient for RB and AR14 were determined as 98.48 and 98.67 percent, respectively, revealing the reliability of the obtained polynomial models to predict decolorization efficiencies. Desirability function was employed to optimize the independent variables to attain the highest possible degradation performance for both dyes in their binary solution. At the optimum point of operation ([Fe2+] = 143.88 mg/L, [H2O2] = 126.89 mg/L and pH = 3.71), degradation efficiencies of RB and AR14 were found as 81.58% and 80.22%, respectively, which were nearly identical to the experimental results.
Highlights
Dyes are classified as one of the most significant environmental pollutants whose existence harms the environment and living organisms such as toxicity and carcinogenicity [1]
Multivariate curve resolution alternating least square (MCR-ALS) Analysis The UV-Vis spectra of rhodamine B (RB) and acid red 14 (AR14) was featured high spectral overlapping at the previously specified concentration demonstrated in Figure 1, which cannot be identified by univariate spectrophotometric approaches
In this work, simultaneous degradation of a binary mixture of RB and AR 14 dyes in aqueous solution was studied by homogenous Fenton reaction
Summary
Dyes are classified as one of the most significant environmental pollutants whose existence harms the environment and living organisms such as toxicity and carcinogenicity [1]. Throughout a chain of chemical reactions, are used to total mineralization of a wide range of persistent organic pollutants. Fenton’s oxidation reaction is one of the most cost-effective AOP methods which uses ferric. ALIASGHARLOU et al./Turk J Chem ions to catalyze the generation of hydroxyl radical for subsequent mineralization organic materials to CO 2 , H 2 O and light-weight organic acids (Eq (1) and (2)) [7,8,9]
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