scholarly journals Determination of Strength Properties of Energy Plants on the Example of Miscanthus × Giganteus, Rosa Multiflora and Salix Viminalis

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3660 ◽  
Author(s):  
Monika Słupska ◽  
Arkadiusz Dyjakon ◽  
Roman Stopa

Energy from biomass accounts for 70% of all renewables used for heat and electricity production. Such a significant share of biomass determines the need for the investigation of their mechanical properties, as most of the lignocellulosic material requires cutting, chipping or milling before its utilization for energy purposes. Therefore, the knowledge about cutting resistance, bending stiffness, and impact strength of the energy plants is very important. The values of these parameters are used in the proper selection of shredding machines and their elements, wrapping nets or determination of power demand during raw material conversion. This paper presents the results of research on the mechanical properties of selected energy plants. The scope of the research included three different plant species: Miscanthus × giganteus, Rosa multiflora, and Salix viminalis, investigated in terms of cutting resistance, bending stiffness and impact strength of stalks. The results showed that the average stalk cutting resistance for the rotation speed of 4200 RPM was 0.17 N·mm−2 for the Miscanthus × giganteus, 0.15 N·mm−2 for the Rosa multiflora and 0.2 N·mm−2 for the Salix viminalis. Meanwhile, for a rotation speed of 3200 RPM, the cutting resistance amounted to 0.15 N·mm−2 for Miscanthus × giganteus, 0.16 N·mm−2 for Rosa multiflora and 0.18 N·mm−2 for Salix viminalis. For the impact measurements, the Salix viminalis exceeded 40 J·mm−2 of absorbed energy. Meanwhile, the average impact strength value for the Rosa multiflora was 0.53 J·mm−2 and for the Miscanthus × giganteus was 0.22 J·mm−2. The bending stiffness of Miscanthus × giganteus at an average modulus of 3.44 GPa was 1.1 N·m2 for the basal zone, 0.78 N·m2 for the central zone, and 0.72 N·m2 of the apical zone. For the average Young’s modulus of 0.19 GPa, the bending stiffness of the Rosa multiflora reached a value of 0.64 N·m2 for the basal zone, 0.23 N·m2 for the central zone, and 0.28 N·m2 for the apical zone. The Salix viminalis, with an average modulus of elasticity of 0.23 GPa, achieved bending stiffness in the basal zone of 0.99 N·m2, the central zone 0.33 N·m2, and the tip zone 0.38 N·m2. This research makes it possible to expand our knowledge in the field of biomass processing and construction of agricultural machinery with higher processing efficiency.

2013 ◽  
pp. 167-170
Author(s):  
G. Rudko ◽  
O. Zinchenko ◽  
V. Zinchenko

It has been proved that mankind has no other alternative for saving from the energy catastrophe (as a result of global warming) than a wide introcluction of fast-growing energy plants on all land areas where possible, especially for the degraded soil rehabilitation though without losses in land for obtaining the sufficient quantity of food products. Miscanthus giganteus (or napier grass) proves most effective among plant biofuels. This plant on the majority of Ukraine’s lands can yield considerably not only because of biomass quantities, but due to the lowest expenditures on its growing. Miscanthus giganteus also contributes to the degraded soil rehabilitations.   


2012 ◽  
Vol 15 (3) ◽  
pp. 77-103 ◽  
Author(s):  
Agata Pszczółkowska ◽  
Zdzisława Romanowska-Duda ◽  
Wiktor Pszczółkowski ◽  
Mieczysław Grzesik ◽  
Zofia Wysokińska

The objective of this article is the conducting of an analysis of the production of selected energy plants that are already a basic source of agrobiomass in Poland. The analysis looks at environmental aspects and production conditions for biomass designated for energy for the Virginia mallow (Sida hermaphrodita), common osier (Salix viminalis), silver–grass (Miscanthus x giganteus), and switchgrass (Panicum virgatum). What is presented is an economic analysis of the production of selected energy plants, taking into account the costs of establishing plantations and their cost effectiveness. Moreover, logistic strategies for the delivery of biomass intended to secure continuous production of renewable energy as a part of sustainable development is signaled.


2020 ◽  
Vol 75 (1) ◽  
pp. 29-41
Author(s):  
ROMAN MOLAS ◽  
HALINA BORKOWSKA ◽  
DOMINIKA SKIBA ◽  
ALEKSANDRA GŁOWACKA

Through the six successive years (2010–2015), from the 5th to the 10th year of cultivation, research was carried out on yielding and species characteristics of 4 perennial vegetatively propagated energy crops. These were: 2 species of Miscanthus, Sida hermaphrodita, and 2 Salix viminalis clones (1047 and 1054), cultivated side-by-side. The height and shoot number, yield and biomass moisture were evaluated. The highest shoot density of Miscanthus sacchariflorus was found, while the largest yield of Miscanthus × giganteus. Salix viminalis and Miscanthus × giganteus biomass was characterized by the highest content of accumulated moisture (on average 50%). The Sida hermaphrodita plants were appeared as the tallest ones on the six-year average. It is worth mentioning, we have concluded that yield of Miscanthus, and Sida is high and stable in the long-term study. However, in the average yields of these 2 species (Miscanthus × giganteus and Sida hermaphrodita) no statistically significant differences were found. Results can strengthen the improved species diversity in perennial energy crops cultivation.


2020 ◽  
Vol 110 ◽  
pp. 73-78
Author(s):  
Anita Wronka ◽  
Grzegorz Kowaluk

There is a systematic increase in the use of wood waste as raw material in particleboard production, but in the face of an upward trend in particleboard demand, these activities are insufficient. Therefore, there arises the necessity of using materials whose resources are renewable easier (faster) than forest resources, or materials which are considered waste. Such materials could be: “energetic” willow (Salix Viminalis L.) and rape straw. In the case of willow, its production potential quite often cannot be fully utilized in an “energy production” way, due to consumers’ requirements and capabilities. In the case of rape straw, which is regarded as waste material (in more optimistic scenarios – as a side product) in agricultural production, it is known, that the amount of this material will increase, because of the EU regulations, concerning biofuels. Today only 2–3% of rape straw is industrially utilized. The results of research show that appropriate preparation of the mentioned alternative raw material and adjustment of technological parameters give a possibility to produce particleboards of parameters equal to, or even higher than, those of typical, commercially available boards. The research confirmed the possibility of replacing industrial wood shavings with rapeseed straw particles even in 50% without significantly worsening the properties of the manufactured boards. The strength and thermal insulation parameters of boards with reduced density, made of Salix Viminalis L. willow particles, are also promising.


2015 ◽  
Vol 208 ◽  
pp. S118
Author(s):  
Valentina Tudor ◽  
Ioan Niculae Alecu ◽  
Ionela Mituko Vlad ◽  
Marcela Ştefan ◽  
Adriana Badea ◽  
...  

2018 ◽  
Vol 22 (6 Part B) ◽  
pp. 3057-3071 ◽  
Author(s):  
Obid Tursunov ◽  
Jan Dobrowolski ◽  
Katarzyna Zubek ◽  
Grzegorz Czerski ◽  
Przemyslaw Grzywacz ◽  
...  

2014 ◽  
Vol 12 (1) ◽  
pp. 107-117
Author(s):  
Aleksandra Sieciechowicz ◽  
Zofia Sadecka ◽  
Sylwia Myszograj ◽  
Monika Suchowska-Kisielewicz

AbstractSewage sludge is considered to be high quality fertilizer. Therefore, in Poland, it is used to fertilize energy plants. On the one hand, it allows using large amount of sewage sludge on the other hand it contributes to the production of renewable energy.The study was based on monitoring the plantation of energetic willowSalix viminalisfertilized with sewage sludge from wastewater treatment plant in Sulechow. The aim of the investigation was to study changes of the lead content in different parts collected during a year and analyze the differences in the accumulation of lead in the plants planted at different times. The results of the study showed that the amount of lead content in the biomass willow was not influenced by sewage sludge used as a fertilizer.


1990 ◽  
Vol 80 (2) ◽  
pp. 301-306
Author(s):  
Tiina Vahala ◽  
Tage Eriksson ◽  
Peter Engstrom

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