Comparative Research of Thermochemical Conversion Properties of Coarse-Energy Crops

Živilė Černiauskienė, Algirdas Jonas Raila, Egidijus Zvicevičius, Vita Tilvikienė and Zofija Jankauskienė
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Živilė Černiauskienė: Department of Mechanical, Energy and Biotechnology Engineering, Vytautas Magnus University, Studentų str. 15, 53362 Akademija, Kaunas distr., Lithuania
Algirdas Jonas Raila: Department of Mechanical, Energy and Biotechnology Engineering, Vytautas Magnus University, Studentų str. 15, 53362 Akademija, Kaunas distr., Lithuania
Egidijus Zvicevičius: Department of Mechanical, Energy and Biotechnology Engineering, Vytautas Magnus University, Studentų str. 15, 53362 Akademija, Kaunas distr., Lithuania
Vita Tilvikienė: Lithuanian Research Centre for Agriculture and Forestry, Instituto al. 1, 58344 Akademija, Kėdainiai distr., Lithuania
Zofija Jankauskienė: Lithuanian Research Centre for Agriculture and Forestry, Instituto al. 1, 58344 Akademija, Kėdainiai distr., Lithuania

Energies, 2021, vol. 14, issue 19, 1-15

Abstract: In the world, as in Lithuania, there is a costant search for new crops suitable for energy conversion. The coarse-energy crops and their biomass studied for this paper were assessed in a comprehensive manner, i.e., not only their calorific value and ash content but also their ash melting properties and pollutants emitted during the thermochemical conversion. The calorific value of energy crops varies from 17.92 ± 0.32 to 18.50 ± 0.66 MJ kg ?1 and decreases in the following order: A. dubia > M. giganteus > C. sativa. Ash content varies from 1.51 ± 0.03 to 3.36 ± 0.23% and decreases in the following order: C. sativa > A. dubia > M. giganteus . The lowest primary ash deformation (648 ± 8 °C) was recorded for C. sativa. Taking into account the specificity of our research and the changes in biomass ash content due to mineral nitrogen fertilization, it has been found that that higher levels of nitrogen fertilizers in the combustion products reduce CO and increase the total CO 2 content of the combustion product. Significant changes in fertilization were usually 170 kg ha ?1 for A. dubia and 90 kg ha ?1 for M. giganteus . In summary, A. dubia , M. giganteus and C. sativa biomass should be used for thermochemical conversion.

Keywords: Artemisia dubia Wall.; Miscanthus×giganteus; Cannabis sativa L.; biomass; thermal properties; emissions; mineral fertilizers (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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