Photodegradation of some Furocoumarins in Ethanol under UV Irradiation

Nataliya Bryantseva; Olga N. Tchaikovskaya; Vlada S. Kraiukhina; Maria Gómez; Jose Luis Gómez

doi:10.4028/www.scientific.net/KEM.683.402

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 683Photodegradation of some Furocoumarins in Ethanol...

Photodegradation of some Furocoumarins in Ethanol under UV Irradiation

Abstract:

Photodegradation of 5-Methoxypsoralen (5-MOP), 4', 5'-dimethyl-3,4-cyclogeksilpsoralen (KC5) and 4'-methyl-3,4 cycloheptylpsoralen (KC4) has been carried out in an XeBr exilamps, both in the presence of H2O2, and a kinetic model, which explains the dependence of the pseudo-first order kinetic parameter on the substrate concentration and other operational variables, has been developed. In the development of the model, mass transfer of 5-MOP, KC5 and KC4from the bulk solution to the wall of the vessel was assumed as the step determining the rate of the photodegradation process, which successfully explains some singularities observed in the experimental results.By fitting the experimental data to the model, a detailed study of the influence of all operational variables on the pseudo-first order kinetic parameter has been done, in good agreement with the model hypotheses.

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Periodical:

Key Engineering Materials (Volume 683)

Pages:

402-405

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.683.402

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Online since:

February 2016

Authors:

Nataliya Bryantseva*, Olga N. Tchaikovskaya, Vlada S. Kraiukhina, Maria Gómez, Jose Luis Gómez

Keywords:

4',5'-Dimethyl-3,4-Cyclohexyllpsoralen, 4'-Methyl-3,4-Cycloheptylpsoralen, 5-Methoxypsoralen, Excilamp, Kinetic Model, Photodegradation, UV, XeBr

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