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The aim of the bachelor thesis is to analyze the change of opinions on selected problems, which have occurred during the last decade in connection with biofuels. The main question at hand is whether the form of discussion on the topics below may be related to the development of world biodiesel consumption. Attention is focused specifically on palm oil biodiesel. Two countries - Indonesia and Malaysia - were selected as the model area. The thesis deals with the issue of the relation of palm oil biodiesel and the environment on the example of the emission of greenhouse gases into the air. It also addresses the evolution of changes in opinions on small farmers, whose relation to environment is significantly different. Finally, the work evaluates the relationship of the society to biofuels and specifically to palm oil biodiesel. Keywords: Biofuels, biodiesel, palm oil, emissions, Indonesia, Malaysia.

This work deals with the use of biofuels as transport fuels. The first part is devoted to the basic distribution of biofuels division and biomass division for their production. The main part focuses on particular biofuels and the ways of obtaining these fuels. The work describes in detail the technological processes and trends in the production of biofuels, such as MTBE, ETBE, bioethanol, biodiesel, butanol, further global use of biofuels for transport, their properties in motor vehicles, their production and consumer prices. The paper gives the basic statistics of some major countries and Czech Republic about total biomass production, covering area of growing crops for the production of bioethanol and biodiesel, their prices. At the end the attention is paid to assessment of the positive and negative characteristics of biofuels and their effect on nowadays.

Bibliographic entry Filip, O. (2015): "Food vs. Fuel: The Role of Bioenergy." (Unpublished master's thesis). Charles University in Prague. Supervisor: prof. Ing. Karel Janda M.A., Dr., Ph. D. Length: 121,976 characters Abstract This thesis studies the relationship between the first generation biofuels and selected commodities and assets in the USA, Europe, and Brazil. It is the first attempt to combine the taxonomy and wavelet analyses in a single research application. Our unique dataset comprises 32 weekly price series covering the 2003-2015 time period. First, we employ a method of minimum spanning trees and hierarchical trees to model a biofuel-related price network. We demonstrate a development phase shift between Brazilian and the US/EU biofuel industries. We reveal a strong and stable connection between Brazilian ethanol and its main production factor, local sugarcane. We further find that US ethanol is closely linked to corn. In the contrary, European biodiesel exhibits only moderate ties to its production factors. Subsequent wavelet analysis scrutinizes the identified price connections both in time and frequency domains. Both Brazilian and US ethanols are found to be positively related to their respective feedstock commodities. In particular, feedstock proves to lead the price of the biofuel and not...

This bachelor's work is dealing with the various aspects of utilization of liquid biofuels in the road transport. These aspects are physicochemical, technical, economic, social and environmental. In the first part of the work, there are definitions of bioethanol and biodiesel at the beginning, which are the most frequently used in the category of liquid biofuels. Properties of both biofuels and production processes are also included. Combustion of biofuels has a significant impact on human health, among others. So, the chapter dealing with the emissions from combustion of bioethanol or biodiesel and health effects of these emissions is following. The second part of the work aims to map a current situation in the field of biofuels in selected countries. These countries are the United States of America, Federative Republic of Brazil and People's Republic of China. Analysis of each country is divided into several topics - production of bioethanol/biodiesel, government programs to support the development of biofuels and possible future perspectives of developments in the fields of biofuels. The third and last part deals with numerous side effects of production and utilization of liquid biofuels. These effects are divided into the two main categories, environmental effects and social effects. The side...

The dissertation is dedicated to the utilization of alternative propellants in transport with concentration in biofuel. Firstly, the theoretical part is focused on the technical aspects of their utilization. In addition, fuel characteristics, conditions and options of their applications in diesel-powered vehicle engines are there characterized. The influence on production of exhaust emission is also mentioned and legislation is briefly summed up there. Secondly, the practical part contents the measurement of basic parameters to the classic-powered engine and the biofuel-powered engine in a tractor Zetor Forterra 9641. The whole measurement is carried out in vehicle laboratories in the Department of Technology and Automobile Transport of Mendel University in Brno. Moreover a detailed elaboration and the final evaluation of the measurement results are included in the second part of the dissertation.

Negative predictions about oil stocks combined with the instability in the Middle East encourage development of alternative fuels, which would reduce dependence of the world's economies on oil. The oil and petroleum derivatives are the main dependencies for vehicular traffic, which contributes to the greenhouse gas emissions by a large part. It is therefore necessary to focus on trying to reduce the fuel consumption of cars used for personal transportation. One way to achieve this goal is, for example, to convert existing cars to run on biofuels, buying a hybrid or an electronic vehicle, or, hopefully soon, hydrogen-powered automobile. Obstacles preventing a wider deployment of such fuels and drive systems are often higher purchase and operating costs. These economic disadvantages are being gradually reduced though, and in the future we can surely expect an increase in the number of alternative vehicles on the roads.

Thesis is concentrated on two biotechnologies: biofuels and genetically modified crops. Defines technical and economical characteristics, lists international agreements and czech and european legislation regarding both biotechnologies. Introduces opinions and analyses positions of selected political subjects as UNO, WTO, OECD, EU, catholic church and main czech political parties.