National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Production of an alternative fuel from digestate using bio-drying method
Rákosník, Vítězslav ; Innemanová, Petra (advisor) ; Šváb, Marek (referee)
Biogas represents one of the renewable sources of energy, which has been growing on use rapidly over the past decades. Biogas is produced during anaerobic digestion of organic material in biogas plants and it is most frequently used for heat and electricity production purposes. There are still plenty of unresolved questions as it is with the other renewable sources of energy. One of the most actual topics is the question of the subsequent usage of a digestate - side product of the biogas production process. Digestate is generally applied as an organic fertilizer for farmlands, but there are tendencies to use its solid phase for another energy producing processes or eventually as farm animal bedding, which is unfortunately connected with few problematic aspects such as transportation and storing of the biologically unstable material with high amount of water in it. Answer to those challenges could be provided by the bio-drying of the digestate's solid phaze - substrate is dried up by heat produced during the microbial decomposition of organic matter and artificial aeration. The main objective of the experimental part of this thesis was to comprehensively test the process of bio-drying of unmodified solid phase of digestate from different biogas plants with agricultural origin for the purpose of...
The study of recycling non-ferrous metals in the EU and the Czech Republic
Rákosník, Vítězslav ; Benešová, Libuše (advisor) ; Tonika, Jaroslav (referee)
Overall, recycling entails both advantages and disadvantages. The major advantage is saving large amounts of energy in recycling compared to primary raw material, which is another big plus for recycling non-ferrous metals - save primary raw material. The Czech Republic and many other countries are largely dependent on imports of certain raw materials (aluminum, lead, copper, etc.) or just on mentioned recycling. Nowadays, increase in the number of electrical devices (computers, mobile telephones, tablets, etc.), is recycling of scrap metal very important, because in each device occurs a certain amount of non- ferrous metals, noble metals, which can be used again. In this work will be described commonly used non-ferrous metals (properties, inventories, recovery and recycling). Theses also deal with e-waste and its management. Key words: non-ferrous metals, recycling, utilization

Interested in being notified about new results for this query?
Subscribe to the RSS feed.