The Role of Ascorbic Acid in the Process of Azo Dye Degradation in Aqueous Solution.

ABSTRACT: In this work, the role of ascorbic acid in the process of azo dye degradation was explained. For this purpose, the kinetics of azo dye degradation under different conditions was studied. Among them, the influence of daylight protection/exposition, different concentrations of ascorbic acid (0.567-0.014 mol/dm³), and temperature (20 °C and 50 °C) on the rate of the dyes' degradation was considered. For this process, the kinetic equation was proposed, which indicates that the process of azo dye degradation using ascorbic acid is first order. Moreover, the observed rate constants were determined, and the mechanism of azo dye degradation was proposed. Spectrophotometry results, together with FTIR, fluorescence spectroscopy, and DFT calculations, explain the origin of the decolorizati

SUBMITTER: Pach A 

PROVIDER: S-EPMC11313820 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature