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Analysis of thermal power plants environmental impacts using radioanalytical methods
Král, Dušan ; Ing. Ondřej Huml, Ph.D., KJR FJFI ČVUT v Praze (referee) ; Katovský, Karel (advisor)
Operation of classical power sources, like coal fueled thermal power plants, causes more or less strong impact on surrounded environment. Beside to the generally discussed CO2 emissions, there are CO, SOx, NOx too; and also fly ash emissions containing various trace elements depending on coal quality. Heavy trace elements carried by fly ash generate locally distributed fallout and contaminate soil in the power plant neighborhood for many years. These elements may be detected in soil samples as well as in biomass. Objectives of this work are to find and quantify trace elements in soil samples near Oslavany hard coal fueled thermal plant, which was in operation from 1913 to 1993. Power plant did not use any advanced fly ash filters. Hard coal was used as a fuel for power plant and it was mined locally in Rosice-Oslavany coal district in very deep mines (up to 1428 m). Coal contained a lot of trace elements. A mine as well as power plant is for more than 20 year closed, but trace elements can be still find in the environment. Main goal is to find these elements using activation analysis and gamma-ray spectrometry methodology. We have assembled thirty six soil samples in square lattice drawn around Oslavany power plant brownfield. On behalf of cooperation with colleagues from the Czech Technical University in Prague and their Open-Access project, we irradiated samples in three vertical channels of VR-1 research nuclear reactor. Irradiated samples were transported to gamma spectroscopy & activation analysis laboratory and measured by HPGe detector. Gamma spectra were analyzed and some trace elements identified. We have determine relative and absolute concentration of found elements. We observe and determine activity and weight of As, U, Ba, La, Eu, Mn, K, V, Mg and Na only. Results show a real suspicion for increase of trace elements in soil samples of hard coal power plant surroundings.
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Electric and heat energy sources
Kosek, Stanislav ; Pitron, Jiří (referee) ; Mastný, Petr (advisor)
This thesis deals with different types of electric power sources in the Czech Republic. It describes power plants located in the Czech Republic and also those which do not have such potential of use in the Czech Republic, but are used much more elsewhere in the world. In the Czech republic approximately one third of power plants are nuclear. They are less harmful to the environment than thermal power plants, because they leave out to their surroundings only water vapour from the cooling towers, while thermal ones leave out various harmful gases despite the effort to reduce them as much as possible. Thermal power plants use mostly fossil fuels such as black or brown coal to generace electricity. Some of them are designed to be able to burn biomass, e.g. wood chips, bark or another wood processing industry waste. Finally, renewable energy sources are depicted in this thesis. They appear to be the cleanest source of electricity, but the problem is that this type of power plants cannot be build anywhere. We can take a wind power plant as an example. It is not effective to build it in a windless place and that is why they are build on a higher located places.
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Electric and heat energy sources
Kosek, Stanislav ; Pitron, Jiří (referee) ; Mastný, Petr (advisor)
This thesis deals with different types of electric power sources in the Czech Republic. It describes power plants located in the Czech Republic and also those which do not have such potential of use in the Czech Republic, but are used much more elsewhere in the world. In the Czech republic approximately one third of power plants are nuclear. They are less harmful to the environment than thermal power plants, because they leave out to their surroundings only water vapour from the cooling towers, while thermal ones leave out various harmful gases despite the effort to reduce them as much as possible. Thermal power plants use mostly fossil fuels such as black or brown coal to generace electricity. Some of them are designed to be able to burn biomass, e.g. wood chips, bark or another wood processing industry waste. Finally, renewable energy sources are depicted in this thesis. They appear to be the cleanest source of electricity, but the problem is that this type of power plants cannot be build anywhere. We can take a wind power plant as an example. It is not effective to build it in a windless place and that is why they are build on a higher located places.
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Analysis of thermal power plants environmental impacts using radioanalytical methods
Král, Dušan ; Ing. Ondřej Huml, Ph.D., KJR FJFI ČVUT v Praze (referee) ; Katovský, Karel (advisor)
Operation of classical power sources, like coal fueled thermal power plants, causes more or less strong impact on surrounded environment. Beside to the generally discussed CO2 emissions, there are CO, SOx, NOx too; and also fly ash emissions containing various trace elements depending on coal quality. Heavy trace elements carried by fly ash generate locally distributed fallout and contaminate soil in the power plant neighborhood for many years. These elements may be detected in soil samples as well as in biomass. Objectives of this work are to find and quantify trace elements in soil samples near Oslavany hard coal fueled thermal plant, which was in operation from 1913 to 1993. Power plant did not use any advanced fly ash filters. Hard coal was used as a fuel for power plant and it was mined locally in Rosice-Oslavany coal district in very deep mines (up to 1428 m). Coal contained a lot of trace elements. A mine as well as power plant is for more than 20 year closed, but trace elements can be still find in the environment. Main goal is to find these elements using activation analysis and gamma-ray spectrometry methodology. We have assembled thirty six soil samples in square lattice drawn around Oslavany power plant brownfield. On behalf of cooperation with colleagues from the Czech Technical University in Prague and their Open-Access project, we irradiated samples in three vertical channels of VR-1 research nuclear reactor. Irradiated samples were transported to gamma spectroscopy & activation analysis laboratory and measured by HPGe detector. Gamma spectra were analyzed and some trace elements identified. We have determine relative and absolute concentration of found elements. We observe and determine activity and weight of As, U, Ba, La, Eu, Mn, K, V, Mg and Na only. Results show a real suspicion for increase of trace elements in soil samples of hard coal power plant surroundings.
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