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Biogas production
Rybecký, Adam ; Toman, Filip (referee) ; Sitek, Tomáš (advisor)
Biogas is a stable and controllable renewable energy source that helps to reduce dependence on fossil fuels and thus reduces greenhouse gas emissions. Biogas production uses biodegradable waste, such as agricultural or food waste, thus contributing to the reduction of waste going to landfill. This bachelor thesis deals with the technology of biogas production by anaerobic digestion. The biogas production process is very sensitive to many factors where the main ones are pH in the fermenter, C/N ratio, temperature and hydraulic residence time. There are different biogas production technologies that are distinguished from each other by factors such as the dry matter content of the feedstock or by the temperature regime outside the fermenter. The most common technology for biogas production in practice is the wet fermentation method. The role of biogas in the energy mix of the Czech Republic, but also in the EU, will grow in the future, in its upgraded form to biomethane, as it is completely interchangeable with natural gas and can be used in any sector and in any form. The experimental part of this bachelor thesis deals with and describes the actual process of biogas production using wet anaerobic digestion technology and then evaluates the effects of selected factors such as temperature, nitrogen atmosphere, residence time and dilution of fermenter contents on the quality and quantity of biogas.
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