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Alternative drive
Přikryl, Karel ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
This bachelor's thesis describes types of alternative propulsion systems considering enviroment and reusable sources of energy. It also arguments its functionality and disadvantages. Specifically it talks about electric vehicles.
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Combustion of Paper Pellets
Veselý, František ; Elbl, Patrik (referee) ; Lisý, Martin (advisor)
The bachelor thesis deals with combustion of pellets of wheat straw with paper sludge additive. The work is divided into two main parts. The first part deals with theory of combustion and pellets. The second part is experimental and describes combustion test and measurements.
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Using biofuels in air transport (legislation, measures)
Adámek, Petr ; Šplíchal, Miroslav (referee) ; Nastálek, Ondřej (advisor)
Bachelor thesis contains an overview of the legislation and measures of alternative fuels – biofuels and time mapping their development. Basic division of alternative fuels and focused on biofuels and their basic division and description technology of production, advantages and disadvantages compared to conventional fuels and making evaluation of preparedness for current and future using in civil aviation.
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Modern Trends in Alternative Powertrains
Křivánek, Filip ; Hloska, Jiří (referee) ; Dundálek, Radim (advisor)
This bachelor thesis deals with an overview of modern alternative powertrains for cars. The thesis is focused on the effort to lessen the negative impact on our environment. The main part of the thesis includes key advantages and disadvantages of drive units using alternative fuels, their specific properties, utilization and arrangement in cars. The work also describes in outline further alternatives of powertrains for the future.
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Feasibity study of biofuels sources
Zemach, Vít ; Baláš, Marek (referee) ; Lisý, Martin (advisor)
Technical-economical study of biofuel cultivation is the topic of this diploma thesis. This is a study that includes the technology of growing biomass and its subsequent treatment. Part of the work is an economic and sensitivity analysis, which aims to determine the price of produced biomass. This work focuses on herbal biofuels and their comparison with other types of fuels.
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Combustion of Coffee Pellets
Kurečková, Andrea ; Baláš, Marek (referee) ; Lisý, Martin (advisor)
The bachelor thesis deals with combustion of coffee pellets, which are made of spend coffee grounds. The work is divided into two main parts. The first part contains a research of combustion, solid fuels and energy use of spent coffee grounds. The second part is experimental and describes the combustion test. It describes the measurement procedure, the necessary calculations and evaluation.
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Production of liquid biofuels by using enzymatic hydrolysis of waste paper
Roštek, Martin ; Jecha, David (referee) ; Brummer, Vladimír (advisor)
This bachelor thesis focuses on the retrieval summary of current knowledge about the process of enzymatic hydrolysis with utilization of waste paper as raw material, in order to convert it into liquid biofuels. The thesis summarizes the general knowledge of the lignocellulosic a raw materials and their resources, an overview of available hydrolysis methods for materials and fermentation technologies, and also summary of methods currently used to rise enzymatic hydrolysis process effectivity. The next section provides an overview of commercial plants which use enzymatic hydrolysis of lignocellulosic materials.
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Study of growth and optimization of selected metabolites production by Zymomonas mobilis
Lukačková, Adéla ; Vránová, Dana (referee) ; Babák, Libor (advisor)
In the diploma thesis are discussed the process of enzymatic hydrolysis of waste paper as a source for the production of bioethanol by bacteria Zymomonas mobilis. In the theoretical part summarize basic information about particular methods of hydrolysis, about paper used as a raw material for enzymatic hydrolysis, about possibilities of the fermentative production of bioethanol focusing on the method of simultaneous saccharification and fermentation comparison with enzymatic hydrolysis and fermentation. Suitable microorganisms for ethanolic fermentation and simultaneous saccharification and fermentation and their advantages and disadvantages, are further discussed in this part as well. The theoretical part ends with the suggestion of the technological process for production of bioetanol. It covers all necessary steps from the input of raw material to the separation of produced ethanol. In the experimental part various parameters of hydrolysis, fermentation and simultaneous saccharification and fermentation were optimized using enzymes from Novozymes® company and the Zymomonas mobilis CCM2770 and Zymomonas mobilis LMG457 bacterium. The conversion rate of paper cellulose to gluckose and production of ethanol were observed by HPLC/RI method. Type of buffer, quantity of cells, enzyme and substrate were optimized in order to maximize the efficiency of the process. All experiments were performed on paper containing high amount of cellulose and for comparison on standard medium which contains gluckose. The highest yields was achieved with the use of Novozymes® Cellulosic ethanol enzyme Kit. The strain Zymomonas mobilis LMG457 has demonstrated as a better producer.
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Application of cavitation in industrial processes
Hamar, Oliver ; Tancjurová, Jana (referee) ; Rudolf, Pavel (advisor)
The bachelor thesis deals with the research of the application potential of cavitation technologies in various industries. Thanks to its properties, cavitation seems to be a promising tool for streamlining a large number of industrial processes in several aspects. The first part deals with the theoretical description of the cavitation phenomenon, its negatives and methods of their detection. The second part focuses on the analysis of possible usage areas of cavitation technologies and the ways of generating the cavitation, focusing on current research and findings in the area of hydrodynamic cavitation application.
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