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Removing organic contamination from water, using UV radiation.
Venská, Petra ; Vávrová, Milada (referee) ; Repková, Martina (advisor)
This diploma thesis focuses on possibilities of applications of UV radiation to remove pollutants from water. It summarizes sources of UV radiation and list their benefits and properties. The thesis characterizes so called advanced oxidation processes using UV light. Degradation pathways od pyridine and its derivatives especially halogenated pyridines are described. The photodegradability of pyridine and a rate of this reaction in model water is investigated in the experimental part. Also, the effect of concentration and dose of H2O2 is assessed. Gas chromatography was used to determinate concentrations of pyridine in samples.
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Optimizing requirements for wood coatings
Bednářová, Ilona ; Petránek, Vít (referee) ; Vaněrek, Jan (advisor)
The work deals with wood coating systems. It is focused on the theoretical division of paints due to different aspects, moreover on testing of wood coating systems. In the practical part of the work, the experimental work regarding the influence of weather conditions onto durability of different wood coatings system was preceded. They were compared two different coatings within the basic tests in different environments.
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The application of chlorine for public swimming pool water disinfection
Wagnerová, Andrea ; Svoboda, František (referee) ; Biela, Renata (advisor)
The bachelor thesis focuses on issues surrounding disinfectants of swimming pool water. The dissertation examines various chlorine based disinfectants as well as chlorine free disinfectants. Part of the thesis compares advantages and disadvantages of different possibilities of securing hygienic swimming pool water. Several complexes of public swimming pools in Brno and its neighbourhood were visited in order to examine the methods of disinfection, which are currently used at those swimming pools. Disinfectants based on chlorine are currently used the most for swimming pool water.
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Generation of ozone by photochemical processes in CO2
Kucserová, Aneta ; Salyk, Ota (referee) ; Mazánková, Věra (advisor)
The bachelor thesis deals with the measurement of ozone concentration, which was produced by dielectric barrier discharge, corona discharge and UV lamp. The concentration of ozone in the air was also measured. The theoretical part deals with the basic properties of ozone, its use and determination of concentration by various methods. In the experimental part, ozone generation is described by the above-mentioned discharges.
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Optimization of methods for determining the durability of wood coating systems
Škvařil, Michael ; Žák, Antonín (referee) ; Vaněrek, Jan (advisor)
The bachelor thesis deals with the optimization of methods for determining the durability of wood coating systems. The theoretical part deals with a detailed analysis of wood coating systems, including the specification of their composition, especially with a focus on modern water-borne coating systems. In the practical part an experiment was carried out, where on the selected types of coatings applied to lumber was performed analysis of selected durability parameters of coatings after exposure to short-term and long-term exposure to degradation factors
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Printed chemical sensors of UV light
Fanglová, Michaela ; Čeppan, Michal (referee) ; Veselý, Michal (advisor)
The main task of the bacherol´s thesis was to prepare a photosensitive layer reacting to the radiation dose with a color change. And to calibrate the prepared dosimeters to the required values of the radiation doses of the UVB radiation. This bacherol´s thesis is about light dosimeters, which are based on photochemical reactions. These reactions take place in a thin polymer layer. The experimental study focoused on the preparation and application of photosensitive compositions. These prepared dosimeter compositions were exposed to different doses of UVB radiation, where the color response to the exposure was monitored.
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Design and Operation of Water Disinfections Plants
Krupicová, Simona ; Rajnochová, Markéta (referee) ; Kučera, Tomáš (advisor)
In the first part of my bachelor thesis I deal with individual disinfectants used for hygienic supply of drinking water based on chlorine and without chlorine. Then I mention the operation without chlorine disinfectants. In the second part of this thesis I describe individual plants using various disinfection methods and at the end of the thesis I compare these methods and use it in practice.
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Kinetic study of photochemical reactions in thin printed layer
Rudická, Andrea ; Čeppan,, Michal (referee) ; Veselý, Michal (advisor)
This diploma thesis deals with a study of kinetics of photochemical reactions in a thin printed polymer layer. The experimental part deals with the composition preparation and layers coating. The prepared layers were exposed and subsequently studied for their colour response to the light. The aim of this work was to prepare a photosensitive layer with a significant colour change between individual doses of radiation, to improve the mechanical resistance of the layers, to adjust the sensitivity of the compositions to UVB radiation and to study the kinetics of the photochemical reaction used.
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Development and optimization of stable recipe of tanning lotion.
Němečková, Lenka ; Pávek, Stanislav (referee) ; Pekař, Miloslav (advisor)
This bachelor´s thesis is focused on problems of development and optimalization of stable formula of sunscreen with a sun protective factor SPF 15, which is produced in Altermed Olomouc company. In theoretical part are defined terms as cosmetics, laws, which deal with cosmetics and sunscreens especially. Somatic types of the skin, their reaction to UV rays and their protection against them are there described as well. In experimental part there summarized all requirements, which are necessary to realize for introduction of preparation into the market place and during long term use it must continue to pass all laws, health, marketing and functional claims. I produced a sample of stable sunscreen with protective factor SPF 15 in practical part. This sample was tested in accredited laboratory for all aspects which are necessary for legislation. The results of these testing are noticed in laboratory protocol.
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Photosensitive thin polymeric layers
Rudická, Andrea ; Klusoň, Petr (referee) ; Veselý, Michal (advisor)
This bachelor thesis deals with photosensitive thin polymeric layers. The experimental part deals with the composition preparation and layers coating. The prepared layers were exposed and studied in detail for their color response to the light. The aim was to prepare a dosimeter, to achieve significant color change between individual doses, to improve the mechanical resistence of the layers and to adjust the sensitivity of the compositions to UVB radiation.
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