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Importance of contact tests of ecotoxicity
Modlitbová, Pavlína ; Doležalová Weissmannová, Helena (referee) ; Zlámalová Gargošová, Helena (advisor)
This bachelor thesis is dealing with an issue of contact tests of ecotoxicity and their importance for solid matrices testing as wastes, contaminated soil etc. According to the requierements of current legislative, ecotoxicity of these materials is evaluated only for results obtained with testing their water leach. Need of insertion ecotoxicity contact tests into mandatory set of tests is discussed in thesis, because current set of tests is relevant only for water ecosystem and does not support sufficient prediction for eventual ecotoxicologic impacts for terrestrial ecosystem.
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The problems of fenol sorption from waste water
Židek, Michal ; Pavlovský,, Jiří (referee) ; Doležalová Weissmannová, Helena (advisor)
The bachelor work deals of sorption of phenol from waste water. In theoretical part the basic characteristic of phenol, their effects and presence in environmental compounds are described. The possibility of removal phenol from waste water in waste water treatment is also described. The adsorption process of removal phenol introduced too. The analysis current adsorbents using in removal phenol from aqueous solutions and characteristic properties are also presented in relation to materials on the base of clay minerals. The experimental part is focused on the possibility of removal phenol from aqueous solution via adsorption mechanism under various pH conditions.
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Tin and his species in the environment
Bušinová, Markéta ; Moos, Martin (referee) ; Doležalová Weissmannová, Helena (advisor)
Presented bachelor thesis is background research on tin and his species in the environment. Mainly deals with the effects of inorganic and organic compounds of tin on elements of environment. The work resumes accessible information about properties of tin and his compounds, entry of tin and his compounds into the elements of environment, cycle and occurrence of tin speciation in water, soils, sediments and biological materials.
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The environmnetal impact of burning products
Ročňáková, Ivana ; Vávrová, Milada (referee) ; Doležalová Weissmannová, Helena (advisor)
The submitted thesis deals with the study of combustion products and their impact on the environment and human organism. It explains the nature of combustion and conditions under which the fire originates. In this action is developed a large number of different substances. As concrete examples of inorganic substances were selected following compounds: carbon monoxide, carbon dioxide, sulfur dioxide, sulphates, hydrogen chloride, hydrogen cyanide, nitrous gases and ammonia. From the organic compounds were selected only a few examples, such as the burning of plastics or the subsequent fire extinguishing device is developed by a diverse range of organic compounds. The wide range of compounds was chosen phosgene, formaldehyde, acetaldehyde, PAHs and extremely toxic. When burning the noxious substances into the air first and then wet or dry slope to reach the other components of the environment. These combustion products have diverse adverse effects on both humans and the environment. In some cases, these substances have fatal consequences for all components of the environment.
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