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Determination of the ozone concentration generated by dielectric barrier discharge.
Manduchová, Ivana ; Töröková, Lucie (referee) ; Mazánková, Věra (advisor)
The bachelor´s thesis is focused on the study of determination of the ozone concentration generated by dielectric barrier discharge from high-purity oxygen gas of 99,999 9 %, at changes in different experimental conditions, using absorption spectrometry. The emphasis was put also equally on the comparison of two representatives of the basic methods determining the concentration of ozone. In the theoretical part are described characteristic properties of ozone and fields of utilization, methods of ozone generation, experimental methods of determining the concentration of generated ozone and microbicidal effects of ozone. In the experimental part was investigated the generation of ozone created by interaction of oxygen with oxygen adsorbed on the walls of ozonizer depending on variation of experimental conditions. Multiple series of experiments were conducted, where the changing variable of experimental conditions was the change of voltage on power supply, the flow change of oxygen and the change of reaction time period. Besides of these, there has been also examined the applicability of determining the concentration of ozone using iodometric titration in comparison with the method of UV absorption at conditions used in the experiment. Ozone was generated by assembly of two identical cylindrical ozonizers made from stainless steel functioning on principle of dielectric barrier discharge using dielectric from alumina.
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Determination of the ozone concentration generated by dielectric barrier discharge.
Manduchová, Ivana ; Töröková, Lucie (referee) ; Mazánková, Věra (advisor)
The bachelor´s thesis is focused on the study of determination of the ozone concentration generated by dielectric barrier discharge from high-purity oxygen gas of 99,999 9 %, at changes in different experimental conditions, using absorption spectrometry. The emphasis was put also equally on the comparison of two representatives of the basic methods determining the concentration of ozone. In the theoretical part are described characteristic properties of ozone and fields of utilization, methods of ozone generation, experimental methods of determining the concentration of generated ozone and microbicidal effects of ozone. In the experimental part was investigated the generation of ozone created by interaction of oxygen with oxygen adsorbed on the walls of ozonizer depending on variation of experimental conditions. Multiple series of experiments were conducted, where the changing variable of experimental conditions was the change of voltage on power supply, the flow change of oxygen and the change of reaction time period. Besides of these, there has been also examined the applicability of determining the concentration of ozone using iodometric titration in comparison with the method of UV absorption at conditions used in the experiment. Ozone was generated by assembly of two identical cylindrical ozonizers made from stainless steel functioning on principle of dielectric barrier discharge using dielectric from alumina.
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