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Production and characterization of biochar derived from different kind of bran
Černíková, Eliška ; Kalina, Michal (referee) ; Pořízka, Jaromír (advisor)
The bachelor thesis was focused on production and characterization of biochar prepared from different sorts of bran. According to the philosophy of circular economy bran, the biproduct of flour production, was chosen for the production of biochar. This lignocellulosic material was walked through pyrolysis to broaden potential application. Biochar was prepared by slow pyrolysis and considering its properties multiple applications are possible. Biochar’s usage is limited by European Biochar Certificate. The theoretical part contains general description of biochar properties, requests of European Biochar Certificate and possible analytical methods. In the practical part process of biochar preparation and biochar characterization per chosen methods are described. Analysed properties were: specific surface, pH, particle size distribution, electrical conductivity, composition of elements and content of polycyclic aromatic hydrocarbons. Based on measured data possible applications were recommended. Only biochar from rye bran fulfilled the strict criteria of European Biochar Certificate. However all of the prepared materials can be used in agriculture, except from rice bran biochar which according to EBC can only be used in material industry.
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Production and characterization of biochar from mixed plant waste
Bureš, Vojtěch ; Nábělek, Jakub (referee) ; Pořízka, Jaromír (advisor)
This work focused on biochar production from mixed vegetable waste in the context of home gardens and small farms. The aim of the work was to produce different types of biochar from common mixed garden waste material and then to characterize it according to the European Biochar Certificate (EBC) classification, as well as to develop a methodology for household biochar production, according to current knowledge. Four of the five biochar samples produced met all the criteria for the EBC-Feed category and are therefore suitable for any form of use, including animal feed production. The last sample did not meet the EBC parameters for usable biochar due to above-limit levels of polycyclic aromatic hydrocarbons (PAHs), but according to current studies and the new European Union limit values for fertilisers and amendments, the detected PAHs concentrations do not prevent its application to agricultural land. Therefore, based on the findings of this work, it is possible to recommend domestic production of biochar and its application to agricultural soils for long-term improvement of soil quality.
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Production and characterization of biochar derived from different kind of bran
Černíková, Eliška ; Kalina, Michal (referee) ; Pořízka, Jaromír (advisor)
The bachelor thesis was focused on production and characterization of biochar prepared from different sorts of bran. According to the philosophy of circular economy bran, the biproduct of flour production, was chosen for the production of biochar. This lignocellulosic material was walked through pyrolysis to broaden potential application. Biochar was prepared by slow pyrolysis and considering its properties multiple applications are possible. Biochar’s usage is limited by European Biochar Certificate. The theoretical part contains general description of biochar properties, requests of European Biochar Certificate and possible analytical methods. In the practical part process of biochar preparation and biochar characterization per chosen methods are described. Analysed properties were: specific surface, pH, particle size distribution, electrical conductivity, composition of elements and content of polycyclic aromatic hydrocarbons. Based on measured data possible applications were recommended. Only biochar from rye bran fulfilled the strict criteria of European Biochar Certificate. However all of the prepared materials can be used in agriculture, except from rice bran biochar which according to EBC can only be used in material industry.
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