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Utilization of hydrodynamic cavitation for water treatment
Balko, Marek ; Kozák, Jiří (referee) ; Rudolf, Pavel (advisor)
This bachelor thesis deals with the observation of features of cavitation with emphasis on the hydrodynamical cavitation and its use for eliminating unwanted and badly degradable compounds from water. Thanks to high temperature and pressures that are present at a colapse of cavitation bubbles the water decomposes into highly reactive hydroxile radicals which are able to decompose even. This effect can furthermore be strenghtened by the use of advanced oxidation processes – AOP. The experimental part of thesis is dedicated to examining a ability of hydrodynamical cavitation degrade particular chemical substance from water, namely estrogen.
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Utilization of hydrodynamic cavitation for water treatment
Balko, Marek ; Kozák, Jiří (referee) ; Rudolf, Pavel (advisor)
This bachelor thesis deals with the observation of features of cavitation with emphasis on the hydrodynamical cavitation and its use for eliminating unwanted and badly degradable compounds from water. Thanks to high temperature and pressures that are present at a colapse of cavitation bubbles the water decomposes into highly reactive hydroxile radicals which are able to decompose even. This effect can furthermore be strenghtened by the use of advanced oxidation processes – AOP. The experimental part of thesis is dedicated to examining a ability of hydrodynamical cavitation degrade particular chemical substance from water, namely estrogen.
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The possibilities to use hydrothermally treated biowaste for air and water cleaning
Usťak, Sergej ; Muňoz, Jakub ; Usťaková, Marie
The aim of the methodology is to provide to farmers, agricultural consultants, biogas plants owners and operators, originators and processors of biowaste, experts in the field of reclamation and recultivation, investors and other interested parties on issues concerned with the basic information on the use of hydrothermally treated biowaste, especially hydrothermally treated residues from anaerobic fermentation for water and air cleaning. In the introduction, the methodology provides a basic overview on literature regarding to coal similar materials, methods for their preparation, especially the way of hydrothermal carbonization, its basic characteristics and its possibilities and perspectives of application in practice. Furthermore, the methodology describes the actual results obtained during the research project usable in practice and provides their agrochemical, environmental and economic evaluation in the case of application at soils. At the end summarizes the main potential applications and uses of new products based on hydrothermally modified residues as essential components of the filter medium for water and air cleaning.
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Aplication of Photocatalytic Processes for Contaminated Water Cleaning
Maléterová, Ywetta ; Krejčíková, Simona ; Spáčilová, Lucie ; Cajthaml, Tomáš ; Kaštánek, František ; Šolcová, Olga
The necessity of finding the alternative solutions for environmental protection leads to development and use of the new technologies. Photo-catalysis has been applied as a promising technique for the wastewater decontamination and/or purification using semiconductor particles have found increasing interest to solve the resistant pollutants remove problems. This study is focused on verification of the specially designed photoactive materials and their modified versions suitable for photo-processes carried out upon illumination in the UV light.TiO2 as a photocatalyst immobilized in thin layers on glass beads or glass tubes were used for the degradation of 4-chlorophenol and endocrine disruptors namely 4-nonylphenol, 17-ethynylestradiol and bisphenol A in water solution with allowance of the toxicity of final water. Experiments demonstrate the efficiency of photocatalytic degradation for all compounds in both types of photocatalytic reactor (batch and continual arrangement) was 85% in average. The toxicity and the estrogenity of final water were monitored. The long term efficiency of titania catalyst was also proved.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22013103010060 - PDF
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