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Статья
2021

Effect of Inorganic Anions on the Photochemical Destruction of Azo Dyes


M. R. SizykhM. R. Sizykh, A. A. BatoevaA. A. Batoeva, V. A. MunkoevaV. A. Munkoeva
Российский журнал физической химии А
https://doi.org/10.1134/S0036024421060236
Abstract / Full Text

The effect anions (hydrocarbonates, chlorides, nitrates, and sulfates) have on the kinetics of oxidation of methyl orange in a combined UV/S2O\(_{8}^{{2 - }}\)/Fe2+ system is studied using the UV radiation of a KrCl exilamp (222 nm). Adding hydrocarbonates and nitrates to a solution inhibits the mineralization of dissolved organic carbon. Mineralization degree grows from 31 to 60% in the presence of chlorides (10 mM) and sulfates (1–100 mM). Oxidation is inhibited greatly in real aqueous matrices (natural water and waste water from fur dyeing). In natural surface water, this is mainly due to the effect of hydrocarbonates; in waste water, it is caused by the multicomponent pattern of an aqueous matrix containing process impurities.

Author information
  • Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, 670047, Ulan-Ude, RussiaM. R. Sizykh, A. A. Batoeva & V. A. Munkoeva
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