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Type of publication: conference paper
Type of publication (PDB): Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Energetika ir termoinžinerija / Energetics and thermal engineering (T006)
Author(s): Venslauskas, Kęstutis;Navickas, Kęstutis;Norkevičienė, Eglė
Title: Biogas Production From Switchgrass: Issues of Energy Efficiency
Is part of: Rural Development 2017 [elektroninis išteklius]: Bioeconomy Challenges : The 8th International Scientific Conference, 23-24th November, 2017, Aleksandras Stulginskis University : Abstracts Book. Akademija : Aleksandras Stulginskis University, 2017
Extent: p. 125-126
Date: 2017
Note: Puslapiai nurodyti pagal pataisytą leidinį
Keywords: Biomass;biogas;anaerobic digestion;switchgrass;energy efficiency
ISBN: 9786094491238
Abstract: Installation and generation of renewable energy sources is a very fast growing area in the world during the past decade due to the resources depletion and climate change. Growing interest in the use of biomass for energy purpose has created demand for high biomass yielding crops. Therefore, C4 grass species, such as switchgrass (Panicum virgatum), should become strategic agricultural crops. Switchgrass cultivation in Europe for bioenergy is new. Biogas production of switchgrass provides an outstanding opportunity to convert biomass into energy. The objective of this study is to examine possibilities of the biogas production from switchgrass silage and evaluate energy efficiency. The experiments were performed under mesophilic conditions (38±1oC) using AMPTS laboratory digesters. Grass was chopped to 3-5 mm just after harvesting and ensiled in a 3 l jars for 120 days. After the evaluation of the biogas yield and energy conversion efficiency performance it was found that switchgrass biomass is suitable as raw material for the production of biogas. The biomethane yield of selected plants ranged from 189 to 243 l CH4/kg dry organic matter.The energy potential from switchgrass legume can reach 31,2 - 36,7 GJ/ha. Direct and indirect energy input for switchgrass biomass production was 5,53 - 5,71 GJ/ha and for biogas production – 6,1 GJ/ha. The energy efficiency factor for biogas production from switchgrass silage was in the range of 2.39 - 3.15
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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