Modeling and optimization of simultaneous degradation of rhodamine B and acid red 14 binary solution by homogeneous Fenton reaction: a chemometrics approach

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 (Fe 2+ , H 2 O 2 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 ([Fe 2+ ] = 143.88 mg/L, [H 2 O 2 ] = 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.

Adsorption and decolorization study of reactive black 5 by immobilized metal–organic framework of UiO-66 andGloeophyllum trabeumfungus

“…The Fenton reaction is one of the least expensive methods for Advanced Oxidation Processes (AOPs) that use ferric ions to catalyze the formation of hydroxyl radicals and the subsequent mineralization of organic to CO 2 , H 2 O, and lower organic acids. 10 Some dyes that have been studied for degradation by this fungus include Methyl Orange, Methylene Blue, Methyl Green, Remazol Brilliant Blue R, Remazol Brilliant Yellow GL, Remazol Brilliant Orange 3R, Reactive Blue 4, Remazol Brilliant Red F3B, and Reactive Black 5. [11][12][13][14][15] However, the pollutant biodegradation process using free cells still has some drawbacks, such as the cells used are limited in terms of operational stability, reusability, and transfer of substrates into cells.…”

Degradation of Imidacloprid Residue on Red Tomatoes (Solanum lycopersicum) by Advanced Oxidation Processes and Analysis using Spectrophotometer and HPLC

“…Advanced Oxidation Processes (AOPs) are modern methods that can break down organic compounds into simpler molecules, this approach uses hydroxyl radicals (OH•) as an oxidizing agent that include photolysis (used chemical reaction where a chemical compound is broken by photons or light energy), ozonolysis (used organic chemical reaction where ozone/O 3 is employed to cleave the unsaturated bonds), and sonolysis (where used ultrasonic waves). This method which has previously been successful to degrade organic compounds such as the pesticides diazinon, dyes (Safni Safni et al, 2020), phenol (Safni Safni et al, 2019), paracetamol (Safni Safni et al, 2017), and rhodamine B and acid red 14 binary solutions with homogeneous Fenton reaction (Aliasgharlou et al, 2020). Moreover, this method has several advantages, such as a low cost, a short amount of time needed, and the ability to produce environmentally friendly compounds.…”