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Možnosti využití vybraných materiálů pro výrobu bioplynu
Vogeltanz, Jakub
This work deals with the anaerobic treatment of grape marcs. In this work we tested two varieties of wine. Veltlínské zelené and Zweigletrebe. Tests were carried out in the Republic reference laboratory at Mendel University in Brno under mesophilic anaerobic conditions for 24 days in 0.003 m3 reactors and for 26 day in 0.120 m3 reactors. Biogas production and methane content were monitored daily during the test. The measurement results of testing variety Veltlínské zelené were: Substance loads ratio 0.496 kg.kg-1 - specific production of biogas 0.415 m3.kg-1, specific production of methane 0.246 m3.kg-1 and average concentration of methane in biogas was 59.3%. Substance loads ratio 0.099 kg.kg-1 - specific production of biogas 0.656 m3.kg-1, specific production of methane 0.262 m3.kg-1 and average concentration of methane in biogas was 39.8 %. The measurement results of testing variety Zweigeltrebe were: Substance loads ratio 0.496 kg.kg-1 - specific production of biogas 0.378 m3.kg-1, specific production of methane 0.234 m3.kg-1 and average concentration of methane in biogas was 61.9 %. Substance loads ratio 0.095 kg.kg-1 - specific production of biogas 0.544 m3.kg-1, specific production of methane 0.262 m3.kg-1 and average concentration of methane in biogas was 48.9 %.
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Combi-cycle power plant
Tkachuk, Andriy ; Fiedler, Jan (referee) ; Škorpík, Jiří (advisor)
This master thesis follows the bachelor thesis with the same name. It is looks into the analyses of the combi-cycle, the advantage of which is high efficiency and easy separation of CO2 for its storage and further usage. It introduces the Graz cycle, its thermal balance a basic arrangement. The calculation is attached in a separate .XLS file. At the end of the thesis, the result of the calculation is interpreted and the conditions under which the project would be realized are outlined.
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Failure rate wastewater treatment plants
Boryśová, Michaela ; Vlčková, Veronika (referee) ; Hluštík, Petr (advisor)
This thesis deals with the sludge management in wastewater treatment plants. It provides a basic overview of methods for modifying risk material in sludge ending. The main goal of this work is to create a fault trees based on faults which occurred in the sludge management facilities. Furthermore, it was created frequency of failures assessment of the objects on wastewater treatment plant in Hodonín. Provided information were obtained during excursions of WWTP Hodonín and Zbýšov.
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Combi-cycle power plant
Tkachuk, Andriy ; Borbély, Richard (referee) ; Fiedler, Jan (advisor)
This bachelor thesis analyzes the combi-cycle, the advantage of which is easy separation of CO2 for its storage and further usage. The first part shortly presents the currently used cycles and introduces the Graz cycle. It also lists its advantages and disadvantages. The second part focuses on the description of the calculation of thermal efficiency of the cycle and the calculation itself. The calculation is attached in a separate .XLS file. At the end of the thesis, the result of the calculation is interpreted and the conditions under which the project would be realized are outlined.
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The possibilities of usage natural gas as fuel in agriculture.
KAŇKA, Miloslav
This contribution is focused on the possibilities of using gas fuels in transportation, from the historical beginning, the historical development in individual European countries till now. The main focus is on the possibility of using compressed natural gas (CNG) and biogas in agriculture, because the industry is starting the production of new CNG tractors and other vehicles using in agriculture nowadays. The advantages and disadvantages of CNG usage are mentioned too. In some sectors of agriculture, where the handling machines are used, may CNG as fuel be applied successfully. The contribution deals with the real experience of usage the lift trucks powered by CNG, which can be an inspiration for the farms where they consider of CNG as fuel for their vehicles.
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The methanotrophic community in soils of cattle overwintering area
NITKULINCOVÁ, Andrea
The long-term cattle impact on soil methanotrophs was investigated at cattle overwintering area located at the ecofarm in the South Bohemia. Four sets of soil samples were sampled in spring and fall of 2009 and 2010. Differences in methanotrophic community structure among experimental sites and were investigated by DGGE and MISA. Real-Time PCR was used for estimation of quantity of Type I methanotrophs. The CARD-FISH method was used to estimate the percentage shared and cell counts of Type I and Type II methanotrophs among all prokaryotic cells. Substantial part of the thesis was focused on optimization of methods used.
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The use of the reactor with sludge cloud and external biomass separator for methane production from the substrate for BPS Chotýčany, processed by IFBB technology (Integrated Generation of Solid Fuel and Biogas from Biomass)
BROŽEK, Jiří
There were two points of research in this graduation work. The first was IFBB technology (Integrated generation of Solid Fuel and Biogas from Biomass) used for preparation of the substrate for fermentation. The second point was to test reactor with sludge cloud (completed with external biomass separator). This reactor was filled by substrate (prepared by IFBB technology) from agricultural biogas energy plant located in Chotýčany. After IFBB preparation substrate was filled in laboratory reactor´s group. Then it was inoculated by digestate. Digestate is a substance, which is in the end of fermentation process. That substance was first taken in biogas station Chotýčany, then, for comparsion, from station Věžovatá Pláně. Results are that IFBB technology is good for substrate preparation and folowing fermentation is better. Reactor with sludge cloud is good for intensive fermentation. Efficiency of the reactor was measured by CHSKCr. The best fermentation was found after using inoculum from Věžovatá Pláně. The best temperature for fermentation was 50 degree Celsius for both inoculums.
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Gaseous products of microbial decomposition of organic pollution in constructed wetland used for wastewater treatment.
ŠTĚPÁNEK, Jindřich
This master thesis is dealing with monitoring of gaseous products of microbial decomposition of organic pollution in constructed wetland. This wetland was used for wastewater treatment in a village Slavošovice, Czech Republic. Emissions of CO2, CH4 and N2O were measured in one treatment bed of the system. The emissions were quantified, their seasonal course was followed, and the main factors affecting gaseous emissions were identified. Only 3 % of total C emissions were in form of methane, N2O emissions were negligible and only 1,5 % of nitrogen denitrified were in form of N2O. Carbon and nitrogen balances of the system were estimated.
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