| Abstract [eng] |
The amount of bio-waste is increasing every year, therefore, in order to apply the principle of the circular economy, it is possible to produce not only biofuels from biomass waste, but also a by-product - biochar. Biochar can be a great tool for improving the physical and chemical properties of the soil, increasing plant fertility, clearing the soil of contaminants, and so on. During the experiment, slow pyrolysis was performed at atmospheric pressure, gradually raising the temperature. Local raw materials for the pyrolysis process - rapeseed waste after biodiesel production, sewage sludge, corn stalks. The course of the pyrolysis process and the yields of the obtained products were analyzed. The purpose of the pyrolysis process is to produce biochar. The physical and chemical properties of the produced biochar were also investigated - elemental composition (C, H, N, P), organic carbon content, pH, density. The produced biochar is then applied to the soil by growing two different crops - buckwheat and mustard. The effects of biochar on immobilization of heavy metals, soil pH, plant biomass and altitude are investigated. |
