Lilov E.Lilova V.Nedev S.Kozhukharov S.Girginov C.2024-07-162024-07-162024-07-162024-07-162022-01-011314-79781314-7471SCOPUS_ID:85140005237https://rlib.uctm.edu/handle/123456789/1398The dependence of the photodecomposition rate on the initial concentration of methyl orange (MO) as model pollutant was investigated. On the basis of relatively simple calculations, it was concluded that the role of the thermally exited charge carriers could not be neglected in case of high pollutant concentrations. It was found that the correlation between the reaction rate and the methyl orange concentration possesses a complicated N-shaped form. A model was proposed, on the basis of two reactions obeying the Langmuir-Hinshelwood mechanism. It describes the dependence of the reaction rate on the model pollutant concentration, on the basis of an equation, which comprises three parameters. Here, two of them were estimated by two, different ways and show excellent match, confirming that the model describes the dependence correctly.enArticle