engleski

PHOTOLYTIC AND PHOTOCATALYTIC DEGRADATION OF PHARAMCEUTICALS

Pharmaceuticals are highly diverse group of compounds used for treating and preventing diseases in humans and animals. They are designed to be biologically active and therefore they might negatively affect non- target living organisms. Owing to the advances of different analytical methodologies during the last decade, the widespread occurrence of these compounds in the environment was demonstrated. Although they are present in the environment in ng/L concentrations the proof of their existence in the environment lead to an arising social and scientific awareness. Many studies showed that the main point of collection and subsequent release of pharmaceuticals into the environment are wastewater treatment plants, suggesting that their upgrade and implementation of advanced treatment technologies are required. This work presents the results of use of some AOPs - photolytic and photocatalytic degradation of three pharmaceuticals (sulfamethazin, febantel and praziquantel) from different groups. In the experiments with UV-C radiation both photolytic and photocatalytic degradation processes occur, whereas with UV-A radiation only photocatalytic treatment was driven. Although photocatalytic experiments with UV-A are not as efficient as those with UV-C, they have a potential for practical use since natural UV-A solar radiation, which lowers the overall cost of the treatment, can be used.

photolysis ; photocatalysis ; TiO2 film ; pharmaceuticals

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