Scientific Reports of the National University of Life and Environmental Sciences of Ukraine

Prospects of biogas obtaining from sweet sorghum in Ukraine

G. Kulichkova, N. Savytska, O. Volodko, T. Ivanova, S. Tsygankov
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Abstract

The development of energy has a decisive influence on the state of the economy in the country and the standard of living of the population. With the help of biogas technologies, it is possible to increase the share of energy from renewable sources in the national energy balance, reduce the volume of waste generation and increase the volume of their processing and reuse based on innovative technologies and productions, as well as limit greenhouse gas emissions. It is possible to regulate the performance of anaerobic fermentation using macronutrients and micronutrients. They are stimulants, as well as more economically and environmentally safe catalysts compared to chemical reagents, which often require significant energy costs. It has been shown that sweet sorghum bagasse of the Botanical grade has a high content of organic dry matter (87.85%), is rich in trace elements, therefore it is definitely a promising raw material for anaerobic fermentation. The theoretical yield of biogas from sorghum bagasse is 476.38 l/kg of dry matter, with a methane content of 52.90%. The expected energy value of methane is 9.02 MJ/kg dry matter of sorghum bagasse. Sorghum is one of the crops with the highest C/N ratio, which determines the prospect of co-fermentation with a substrate that has a low value of this parameter (suger beet vinasse). Sugar sorghum is a promising candidate for biogas production due to its good chemical composition, relatively high methane yield and the possibility of exploiting marginal lands in Ukraine for its cultivation

Keywords

biogas, anaerobic fermentation, sweet sorghum, bagasse, microelements, energy value

Suggested citation
Kulichkova, G., Savytska, N., Volodko, O., Ivanova, T., & Tsygankov, S. (2022). Prospects of biogas obtaining from sweet sorghum in Ukraine. Scientific Reports of the National University of Life and Environmental Sciences of Ukraine, 18(5). https://doi.org/10.31548/dopovidi2022.05.001
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