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Wyświetlanie 1-4 z 4
Tytuł:
Content of carbon, hydrogen and sulphur in biomass of some shrub willow species
Zawartosc wegla, wodoru i siarki w biomasie wybranych gatunkow wierzb krzewiastych
Autorzy:
Stolarski, M
Powiązania:
https://bibliotekanauki.pl/articles/15169.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
willow
plant species
shrub
shrub willow
productivity
biomass
carbon
hydrogen
sulphur
shoot
root
Salix viminalis
Salix dasyclados
Salix triandra
Salix purpurea
Salix alba
biomass yield
Opis:
Carbon, hydrogen and sulphur were determined in biomass (shoots and roots) of five species of shrub willow: Salix viminalis, Salix dasyclados, Salix triandra, Salix purpurea and Salix alba. Samples of the biomass collected from a strict experiment were dried to constant weight at 105oC. The content of carbon, hydrogen and sulphur was determined in an automatic determinator ELTRA CHS 500. In addition to the chemical determinations, willow plants were assessed, in the first year of cultivation, in terms of their morphological traits and yields. The results underwent statistical analysis using Excel spreadsheets and Statistica PL software programme. An average content of carbon in the biomass of the five analysed willow species was 496.33 g⋅kg-1 d.m. Among the five species, the highest carbon content was discovered in the biomass of Salix purpurea (501.32 g⋅kg-1 d.m.). An average content of hydrogen in aerial parts of shrub willow was significantly higher than in their roots (507.95 vs 465.88 kg-1⋅d.m.). The content of hydrogen in all the species of shrub willow was on average 71.11 g⋅kg-1 d.m., with the highest hydrogen amount in biomass attributed to Salix triandra (74.98 g ⋅kg-1 d.m.). This species, on the other hand, had the lowest concentration of sulphur in its biomass (on average 0.43 g⋅kg-1 d.m.). The average content of sulphur in aerial parts was significantly lower than in roots of willow plants (0.52 vs 0.95 g⋅kg-1 d.m.). This relationship held true for all the five species of willow plants. An average yield of dry biomass obtained from the five shrub willow species in the year when the experiment was established was 5.81 Mg⋅ha-1. The highest dry biomass yield was produced by Salix viminalis (7.22 Mg⋅ha-1).
W biomasie pięciu gatunków wierzby krzewiastej: Salix viminalis, Salix dasyclados, Salix triandra, Salix purpurea oraz Salix alba, w pędach i korzeniach oznaczono zawartość węgla, wodoru i siarki. Pobrane ze ścisłego doświadczenia polowego próby biomasy wierzby wysuszono w temp. 105°C do uzyskania stałej masy. Zawartość węgla, wodoru i siarki w biomasie oznaczono w automatycznym analizatorze ELTRA CHS 500. Ponadto określono cechy morfologiczne oraz produktywność roślin Salix spp. w pierwszym roku uprawy. Wyniki badań opracowano statystycznie z użyciem arkusza kalkulacyjnego Excel oraz programu komputerowego Statistica PL. Zawartość węgla w biomasie badanych gatunków wierzby krzewiastej wynosiła średnio 496,33 g·kg-1 s.m. Spośród badanych gatunków najwyższą zawartość węgla oznaczono w biomasie Salix purpurea, średnio 501,32 g·kg-1 s.m. Zawartość węgla w pędach nadziemnych była średnio istotnie wyższa (507,95 g·kg-1 s.m.) niż w korzeniach (465,88 g·kg-1 s.m.). Zawartość wodoru u badanych gatunków wynosiła średnio 71,11 g·kg-1 s.m. Istotnie najwyższą średnią zawartość wodoru w biomasie stwierdzono u gatunku Salix triandra (74,98 g·kg-1 s.m.). Gatunek Salix triandra zawierał istotnie najmniej siarki w biomasie, średnio 0,43 g·kg-1 s.m. Średnia zawartość siarki w pędach nadziemnych była istotnie niższa niż w korzeniach, odpowiednio 0,52 g·kg-1 s.m. i 0,95 g·kg-1 s.m. Zależność tę stwierdzono u wszystkich badanych gatunków wierzb. Plon suchej biomasy badanych gatunków wierzb uzyskany w roku założenia doświadczenia wyniósł średnio 5,81 Mg·ha-1. Spośród badanych gatunków istotnie najwyższy plon suchej biomasy uzyskano u Salix viminalis — 7,22 Mg·ha-1.
Źródło:
Journal of Elementology; 2008, 13, 4; 655-663
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermophysical and chemical properties of biomass obtained from willow coppice cultivated in one- and three-year rotation cycles
Autorzy:
Krzyzaniak, M.
Stolarski, M.J.
Szczukowski, S.
Tworkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/14814.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
Most of the energy today is obtained from fossil fuels, which are becoming more expensive and less available. Energy from biomass produced on agricultural land is an alternative option. Energy crops should guarantee high yield and good quality parameters, associated with their use in energy production. This study analysed the thermophysical and chemical properties of biomass obtained from 15 new clones of willow selected in the Department of Plant Breeding and Seed Production of the University of Warmia and Mazury in Olsztyn. The plants were cultivated in one- and three-year rotation cycles, run in 2009-2011 at two research stations: in Bałdy and in Łężany. The energy content as well as elemental and physical properties of biomass were analysed. The higher heating value was better in biomass from one-year shoots (on average 19.66 MJ kg-1 d.m.). The highest value of this parameter was recorded for the clone of Salix acutifolia UWM 093 (20.04 MJ kg-1 d.m.). The higher heating value in biomass of three-year old clones was on average lower by 0.06 MJ kg-1 d.m. The lower heating value in biomass increased in longer willow coppice harvest cycles. The highest lower heating value was recorded for the clone UWM 035 of Salix pentandra (9.27 MJ kg-1) harvested in a three-year cycle, whereas the lowest one was achieved by the clone of Salix dasyclados UWM 155 (7.55 MJ kg-1) harvested in a one- -year cycle. The average moisture content in three-year shoots was 50.01% d.m., being higher by 2.31% in one-year shoots. The ash content was lower in biomass harvested in three-year rotation. In conclusion, willow biomass obtained in a three-year harvest cycle contains less of undesirable elements and proves to be better quality fuel than biomass obtained in a one-year harvest cycle.
Źródło:
Journal of Elementology; 2015, 20, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes of willow biomass quality as renewable energy feedstock harvested with biobaler
Autorzy:
Stolarski, M.J.
Krzyzaniak, M.
Szczukowski, S.
Tworkowski, J.
Grygutis, J.
Powiązania:
https://bibliotekanauki.pl/articles/14857.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
biomass change
willow biomass
biomass quality
chemical composition
renewable energy
BioBaler harvesting system
Opis:
Willow biomass can be collected in the form of entire or chipped shoots. The method depends on the harvest cycle of the plants, availability of necessary machines and the expected use of harvested raw material. Methods of harvesting influence on biomass quality during its acquisition and further in the storage period. Therefore, the aim of the research was to characterize the harvest of willow plantation with the use of a biobaler WB 55 and to assess the quality of the obtained biomass during the 9-month period of its storage. Willow was harvested with biobaler WB 55 in January 2010 on a commercial plantation. The 3.5 ha plantation was situated in the north-east of Poland, in the village of Dorotowo (53°42′9.88″ N 20°25′11.02″ E). An analysis of the biomass quality in terms of its thermophysical and chemical properties was carried out at the laboratory of the Department of Plant Breeding and Seed Production of the UWM in Olsztyn. Willow harvesting with a unit consisting of a 129 kW tractor and biobaler WB 55 was conducted efficiently. The average harvesting efficiency was about 18 bales per hour of the unit operation (8.75 Mg h-1 FM). The fresh matter density in the bales averaged 358.10 kg m-3 FM, whereas in dry matter it was 166.16 kg m-3 DM. With extended duration of storage, the quality of willow biomass as an energy raw material improved. The biomass in the bales steadily lost its moisture, from 53.06% in January to 17.48% in September. On the other hand, the lower heating value increased during that same period from 7.75 MJ kg-1 to 15.65 MJ kg-1. It has been found based on the observations made during the study period that the advantages of a biobaler WB 55 are the easy and efficient harvesting of plants on a plantation and bales can be used for energy production as needed.
Źródło:
Journal of Elementology; 2015, 20, 3
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermophysical properties and elemental composition of agricultural and forest solid biofuels versus fossil fuels
Autorzy:
Stolarski, M.J.
Rybczynska, B.
Krzyzaniak, M.
Lajszner, W.
Graban, L.
Peni, D.
Bordiean, A.
Powiązania:
https://bibliotekanauki.pl/articles/14077.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:
Journal of Elementology; 2019, 24, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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