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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: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Streikus, Dionizas;Jasinskas, Algirdas
Title: Evaluation of giant knotweed and bulrush as perspective non-traditional herbaceous energy plants and quality assessment of biofuel produced from these plants
Is part of: Biosystems engineering : 10th international conference, May 8-10, 2019 in Tartu, Estonia : book of abstracts. Tartu : Estonian University of Life Sciences, 2019
Extent: p. 80-80
Date: 2019
Keywords: Knotweed;Bulrush;Pellets;Properties;Density;Life cycle
ISBN: 9789949536818
Abstract: As the consumption and demand of biofuels in the Central Europe increases, Lithuania is in need to find more types of biomass that can not only be grown locally, but also produce effective results. In this study, two non-traditional herbaceous energy plants, giant knotweed (Fallopiasachalinensis) and bulrush (Typha), were chosen and the important biofuel properties of these plants, such as life cycle assessment, were investigated. Giant knotweed was chosen because it is not demanding for soil quality and is considered to be one the most effective crops in the Central Europe according to biomass yield. Likewise, bulrush is a very common plant in the region, growing on lake shores. For the study, giant knotweed and bulrush biomass was cut, chopped, milled and granulated with a small capacity granulator (250 – 300 kg h-1), then the technical means of plant preparation and use for energy purposes were investigated and applied. To assess biofuel quality, the compositions of plant ash and milling fractions were determined and the granule quality indicators were measured – moisture content, density, compressive strength as well as elemental composition, ash content and calorific value. Moisture content reached 22.3 ± 0.07 % in giant knotweed pellets and 15.3 ± 0.07 % in bulrush pellets, pellet density was respectively 1057.5 ± 73.6 kg m-3 and 1050.0 ± 34.1 kg m-3, pressing force of degradation of both plant pellets reached 569.4-642.2 N. Ash content was 4.3 ± 0.01 % in giant knotweed pellets and 5.88 ± 0.06 % in bulrush pellets, net calorific value was respectively 18.96 ± 0.28 MJ kg-1 and 17.43± 0.39 MJ kg-1. These parameters meet high quality requirements for solid biofuels; biomass of both plants can be compared to wooden briquettes and pellets because of their similar mechanical and thermal properties. The production and use of giant knotweed and bulrush pellets for energy needs can be recommended to farmers and individual homeowners, [...]
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio inžinerijos fakultetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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