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Question of determination of analgetics in waters
Benešová, Markéta ; Lisá, Hana (referee) ; Vávrová, Milada (advisor)
The bachelor thesis is focused on the optimization of the method for the determination of analgetics in waters. The aim of this work is to work up the methodical procedure for determination of chosen pharmaceuticals i.e. salicylic acid and naproxen in model water samples. Analytes were isolated by solid phase extraction (SPE); they were identified by high performance liquid chromatography with UV-VIS detection of diode – array type (HPLC – DAD). The optimal method was selected from several verified procedures on the basis of practical experience.
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Analysis of the heat utilisation from biogas stations for heating
Kareš, Martin ; Lisá, Hana (referee) ; Milčák, Pavel (advisor)
This bachelor thesis deals with the analysis of the use of heat from biogas stations. The first part describes the production of biogas, its combustion efficiency and the development of energy production thus obtained. In the second part it deals with individual solutions of the application of heat produced and in the last chapter it analyses the balance of the specific solution of heat transfer and its impact on the environment.
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New generation of biofuels
Pražák, Vojtěch ; Lisá, Hana (referee) ; Baláš, Marek (advisor)
This bachelor's thesis deals with different generations of biofuels. Their advantages and disadvantages and problems associated with their use in practice. The first part of the theses focuses on legislation and acquaintance with the issue of biofuels as a whole. The second part is focused on acquaintance and description of individual biofuels with examples of use in practice. At the end of the work there is an analysis of individual generations, representation in the fuel market and their efficiency.
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Agropellets for Combustion
Nejerál, Michal ; Lisá, Hana (referee) ; Lisý, Martin (advisor)
Agropellets are one of the alternative fuels which have been used very often nowadays. Therefore, this thesis deals with the use of agropellets as a fuel. It‘s focused on the generation of emissions during combustion. There are described properties of pollutants released during combustion and properties of agropellets. In a sample of selected fuels, the proportion of chemical composition of elements in the combustible and the calculation of their calorific value are experi-mentally determined. Furthermore, we found out the basic elemental composition of the flue gas, which was measured during combustion on the pilot unit.
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Application of gas chromatography for determination of drug residuals
Sýkora, Richard ; Lisá, Hana (referee) ; Vávrová, Milada (advisor)
Analgesics are nowadays widely used group of drugs in human and also in veterinary medicine. Residuals of these drugs enter surface waters via discharges from the waste water treatment plants as the result of insufficient efficiency of their removal during cleaning process. In this bachelor thesis the possibilities of the analgesics residuals determination in waters using derivatization followed by gas chromatography with mass spectrometric detection were experimentally evaluated. Individual derivatization procedures were compared too. Several derivatization agents were tested and experimental parameters for selected analgesics were optimized (reaction time and temperature, amount of derivatizing agent). Further, several procedures of isolation of target compounds from water based on Solid Phase Extraction were verified. In all cases, gas chromatography with TOF-based mass spectrometric detection acts as final analytical method.
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Conventional and small modular reactors
Vintr, Lukáš ; Lisá, Hana (referee) ; Milčák, Pavel (advisor)
This thesis deals with nuclear energy. It contains a brief history of the development of this industry and provides insight into the process and control of the fission chain reaction used in nuclear reactors. It also describes conventional reactor types and the current state of their use in the world. It then mentions the research objectives set by the Generation IV International forum. Finally, it defines small modular reactors, describes a number of conceptual designs, and presents an analysis of the current state of their development, together with the possibilities of their use for the production of electricity or process heat.
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Comparison of heat sources for family houses
Mužík, Jan ; Lisá, Hana (referee) ; Toman, Filip (advisor)
The bachelor thesis focuses on the comparison of different heat sources for four model houses with different heat losses. The main types of fuels used for heating the houses, such as solid fuels (biomass, fossil fuels), natural gas and electricity, their advantages and disadvantages as well as their environmental impact are presented. Subsequently, a complete overview of the available technologies in the field of heating of family houses is prepared, describing their technical parameters, operation, energy efficiency, costs and environmental impact. The thesis focuses on traditional heat sources such as solid fuel boilers, local heaters, gas and electric boilers, but also on their more modern alternatives such as gasifier boilers, automatic pellet boilers, condensing gas boilers and heat pumps. In the practical part, calculations of the total costs of heating and domestic hot water heating by each heat source of all four model houses are performed. This part is complemented by tables with technical parameters of the selected heat sources and also graphical dependencies comparing their total operating costs.
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Energy production systems designed to reduce the energy dependency of a family home
Švehla, František ; Lisá, Hana (referee) ; Toman, Filip (advisor)
This thesis deals with the issue of electricity production in family houses, focusing mainly on photovoltaic and wind power plants, but also on the use of hydroelectric and biogas sources. The main objective of the thesis is to analyse and compare methods for efficient electricity generation in households. Technical aspects such as the appropriate size and location of photovoltaic systems and wind turbines, their technical parameters, and above all issues of economic viability are examined. The most important result of the work is the identification of optimal combinations of renewable energy sources for individual households, which can lead to a significant reduction of energy consumption from conventional sources and improve the energy independence of houses. Based on the analyses and calculations, recommendations for decision-making in the selection and implementation of renewable energy sources in family houses are presented. This work provides interesting insights for homeowners, energy consultants and professionals in the field of electricity generation using renewable energy sources in family houses.
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Research of the effect of desicants on moisture adsorption
Němec, Mojmír ; Lisá, Hana (referee) ; Elbl, Patrik (advisor)
Desiccants are special materials that can effectively adsorb moisture from the surrounding air or space. Desiccants such as silica gel or molecular sieve are often used in laboratory applications, for example to determine the properties of solid fuels. The introduction of the research section is devoted to the description of these properties. The thesis then describes the methods used to accurately determine the moisture in solid fuels. The main part of the thesis is devoted to desiccators together with desiccants, which form a significant part in the process of determining moisture in solid fuels. The experimental part deals with the investi-gation of the effect of different desiccants on the rate of air moisture depletion in the desic-cator under laboratory conditions. The moisture loss in the desiccator is measured using the SHT4x Smart Gadget, which is placed in the desiccator together with the desiccant. The out-put of the experimental measurements are the moisture uptake rate curves of different desic-cants for desiccant weights of 50 g, 100 g, 150 g, 200 g and 250 g. At the end of the thesis, the measured curves of the different desiccants are compared with each other in terms of efficiency.
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Conventional and small modular reactors
Vintr, Lukáš ; Lisá, Hana (referee) ; Milčák, Pavel (advisor)
This thesis deals with nuclear energy. It contains a brief history of the development of this industry and provides insight into the process and control of the fission chain reaction used in nuclear reactors. It also describes conventional reactor types and the current state of their use in the world. It then mentions the research objectives set by the Generation IV International forum. Finally, it defines small modular reactors, describes a number of conceptual designs, and presents an analysis of the current state of their development, together with the possibilities of their use for the production of electricity or process heat.
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