9/5/2023 0 Comments Shimadzu multispec 1501J., Bonilla-Petriciolet, A., Ben Lamine, A., & Ismail, S. Optimization of Hg(II) adsorption on bio-apatite based materials using CCD-RSM design: characterization and mechanism studies. Equilibrium, kinetic and thermodynamic studies of the biosorption of textile dye (Reactive Red 195) onto Pinus sylvestris L. Therefore, the results pointed that the Fenton reaction is very efficient in solution discoloration.Īksakal, O., & Ucun, H. The phytotoxicity tests indicate that the Fenton reactions were very effective to reduce the toxicity of almost all contaminated solutions however, for more complex solution (mixture of dyes and real effluents), a longer reactional time is necessary. The mixture of dyes and the real textile effluent obtained lower AR, 56% and 22%, respectively. From kinetic study, the absorbance reduction for RY145 followed a second-order model, while RB19 and RR195 followed a first-order model. The results obtained by RSM indicated that the optimum conditions for Fenton were = 50 mg L −1, = 0.5 mmol L −1, and dye concentration = 0.075 g L −1, obtaining up to 90% of AR. Considering the analysis of variance (ANOVA), the statistical models could be used to describe experimental results and to predict the process behavior. A 2 3 full factorial design coupled with a response surface methodology (RSM) was conducted to evaluate the effects of H 2O 2, Fe 2+, and dye concentration on the Fenton reaction measured by absorbance reduction (AR) as response. Fenton process was successfully applied to degrade three reactive dyes, blue 19 (RB19), red 195 (RR195), and yellow 145 (RY145), a mixture of dyes and a real textile effluent.
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