Original scientific paper
https://doi.org/10.5513/JCEA01/23.4.3669
Evaluation of selected Miscanthus genotypes for biogas production as a possible solution of regional bioenergy
Martin PRČÍK
; Institute of Environmental Management, Faculty of European Studies and Regional Development, Slovak University of Agriculture, Nitra, Slovak Republic
Marián KOTRLA
; Slovak Environmental Inspectorate, Bratislava, Slovak Republic
Tomáš GIERTL
; Institute of Agricultural Engineering, Transport and Bioenergetics, Faculty of Engineering, Slovak University of Agriculture, Nitra, Slovak Republic
Žaneta PAUKOVÁ
; Institute of Environmental Management, Faculty of European Studies and Regional Development, Slovak University of Agriculture, Nitra, Slovak Republic
Martin HAUPTVOGL
; Institute of Environmental Management, Faculty of European Studies and Regional Development, Slovak University of Agriculture, Nitra, Slovak Republic
Dávid ERNST
; Institute of Agronomic Sciences, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, Nitra, Slovak Republic
Ján GADUŠ
; Institute of Environmental Management, Faculty of European Studies and Regional Development, Slovak University of Agriculture, Nitra, Slovak Republic
Alexander FEHÉR
; Institute of Environmental Management, Faculty of European Studies and Regional Development, Slovak University of Agriculture, Nitra, Slovak Republic
Abstract
Plantations of fast-growing crops represent local agroecosystems providing provisioning services in the form of
phytomass that can be utilized for energy and/or non-energy purposes. Permanent grasses such as Miscanthus are
identified as potentially suitable sources of raw materials for the output of second-generation biofuels. The experiments
focused on the production ability of the perennial energy grass Miscanthus were performed in the region of SW Slovakia.
It was confirmed that the studied genotypes (Miscanthus sinensis Tatai and Miscanthus × giganteus) exceeded the costefficient level of biomass production. The above-ground biomass of the studied genotypes was ensiled and afterwards
fed to the experimental fermenters to evaluate the biogas production. The experiments with individual silage mixtures
lasted 600 hours. The total amount of biogas produced from M. × giganteus and M. sinensis Tatai silage mixture was 273
dm3 and 328 dm3, respectively. The average share of methane in the biogas of both studied samples of silage mixtures
was 51%. On the basis of the 10-year average yields of the studied Miscanthus genotypes achieved in our conditions, it is
possible to produce 8 181 m3/ha (M. × giganteus) and 11 248 m3/ha (M. sinensis Tatai) of biogas from the silage mixtures.
The achieved production represents sufficient and stable amount of biogas and its use can be economically efficient and
sustainable in the long run in SW Slovakia.
Keywords
anaerobic digestion; bioenergy; biogas; biomass; Miscanthus × giganteus; Miscanthus sinensis Tatai
Hrčak ID:
288324
URI
Publication date:
21.12.2022.
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