Temat: post-consumer wood - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Zastosowanie kompostów z drzewnych odpadów poużytkowych w uprawie pelargonii rabatowej (Pelargonium zonale) 'Andria'
The use of compost obtained from post-consumer wood waste in the cultivation of zonal pelargonium (Pelargonium zonale) 'Andria'
Autorzy:: Wróblewska, H.
Schroeter-Zakrzewska, A.
Zakrzewski, P.
Powiązania:: https://bibliotekanauki.pl/articles/271268.pdf
Data publikacji:: 2013
Wydawca:: Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:: komposty
drewno poużytkowe
wzrost
kwitnienie
composts
post-consumer wood
growth
flowering
Opis:: Celem przeprowadzonych badań było poznanie wpływu kompostów uzyskanych z drewna poużytkowego na wzrost i kwitnienie pelargonii rabatowej (Pelargonium zonale) 'Andria'. W badaniach zastosowano dwa warianty kompostów otrzymanych z drzewnych odpadów poużytkowych, oznaczone symbolami OPA i OPB. Rośliny uprawiano w podłożach składających się z kompostów i torfu wysokiego w różnych kombinacjach objętościowych. Analizując uzyskane wyniki stwierdzono, że rodzaj podłoża wywarł istotny wpływ na wzrost i kwitnienie pelargonii rabatowej. Większe dawki kompostu (100% i 75%) w podłożu powodowały zahamowanie wzrostu roślin w porównaniu z kontrolą. Dawki mniejsze (25%) dawały wyniki porównywalne w stosunku do kontroli, zwłaszcza w przypadku roślin nawożonych pogłównie.
The aim of this study was to identify the effect of composts obtained from post-consumer wood waste on the growth and flowering of zonal pelargonium (Pelargonium zonale) 'Andria'. Two types of composts, marked OPA and OPB, were used in the research. Plants were grown in media consisting of composts and high peat in various combinations by volume. Analyzing the results it was fund that type of medium has a major impact on the growth and flowering of zonal pelargonium. Higher doses of compost (100% and 75%) in the substratum inhibited the growth of plants compared to control plants, whereas lower doses (25%) gave results comparable to control plants, especially for plants fertilized during the vegetation period.
Źródło:: Aparatura Badawcza i Dydaktyczna; 2013, 18, 4; 365-372
2392-1765
Pojawia się w:: Aparatura Badawcza i Dydaktyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Study of Physical and Mechanical Properties of Post-Consumer Wood of Different Age
Autorzy:: Gayda, Serhiy
Kiyko, Orest
Powiązania:: https://bibliotekanauki.pl/articles/27323548.pdf
Data publikacji:: 2023
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:: post-consumer wood
physical properties
mechanical properties
characteristics
strength
recycling
technology
use
Opis:: It should be noted that there is currently a problem with wood resources in the woodworking industry. A potential, unused wood reserve is post-consumer wood (PCW). The problem with the quality of this wood resource has not been fully resolved since there is no regulatory database. In fact, there is a lack of appropriate regulatory documents, which makes it impossible to describe to a full extent the physical and mechanical properties of PCW of common wood species of different ages as a source of additional raw materials for various woodworking technologies. Proceeding from the goal, the task of the study is to describe the physical and mechanical properties of postconsumer wood using the example of fir wood, which for a long period of time has been used to create furniture and joinery products. The task is also to identify patterns of change in the indicators of this resource with age – an expired service life or suitability. In order to use PCW in woodworking and to fill the scientific base with physical and mechanical indicators of fir wood of different ages with an expired product service life, the following characteristics were investigated: static hardness, swelling, coefficients of swelling, the value of transverse anisotropy, density, static bending strength, splitting strength along the fibers, modulus of elasticity in compression, and the modulus of elasticity in static bending. The characteristics of PCW of the widespread fir species in the range of use from 0 to 20 years were explored, with intermediate control over the properties every 5 years. The dynamics of the physical and mechanical indicators of fir PCW were revealed and it was found that in the course of operation time in various conditions they change, mainly decreasingly: static hardness by 9.2-9.6%; the value of transverse anisotropy by 30-32%; strength: static bending strength by 3.4-7.95%, splitting strength by 4.49-8.67%; modulus of elasticity: in compression by 3.89-4.08%, in bending by 2.75-6.64%. The main causes of changes in the properties of PCW with age: natural: weathering, partial internal rot, insect damage, other biological effects; mechanical: splitting, scratches, small holes from means of fastening and other defects due to use; operational: the influence of power and dynamic loads, the influence of surface finishing agents and other factors on the structural elements of wood products. A summary table was compiled for the selection of indicators of the physical and mechanical properties of fir PCW of different ages. When knowing the indicators and dynamics of the physical and mechanical properties of PCW with age, it can be recommended for manufacturing structural materials – blockboards and furniture panels.
Źródło:: Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2023, 66, 212; Art. no. 177453
1644-3985
Pojawia się w:: Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Ocena przydatności kompostów z drzewnych odpadów pokonsumpcyjnych do uprawy roślin na podstawie testów wegetacyjnych z sałatą (Lactuca sativa L.) i bazylią pospolitą (Ocimum basilicum L.)
Evaluation of the usefulness of composts from post-consumer wood waste for plant growth based on vegetation tests with lettuce (Lactuca sativa L.) and basil (Ocimum basilicum L.)
Autorzy:: Kozik, E.
Wróblewska, H.
Golcz, A.
Wojciechowska, E.
Powiązania:: https://bibliotekanauki.pl/articles/271334.pdf
Data publikacji:: 2012
Wydawca:: Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:: drzewne odpady pokonsumpcyjne
komposty
testy wegetacyjne
post-consumer wood waste
composts
vegetation tests
Opis:: Biologiczna metoda utylizacji przez kompostowanie odpadów o dużej zawartości substancji organicznej, do których zalicza się wszelkie odpady drzewne, jest sposobem ponownego włączenia materii do naturalnego obiegu w przyrodzie. Celem doświadczeń było określenie wpływu dwóch wariantów kompostów (OPA) i (OPB) uzyskanych z pokonsumpcyjnych odpadów drzewnych na wzrost oraz stan odżywienia sałaty i bazylii. Rośliny uprawiano w samym kompoście i w podłożach, w których komposty mieszano z glebą mineralną w stosunkach objętościowych 1:1 lub 1:3. Kontrolę stanowiły rośliny uprawiane w glebie mineralnej oraz w substracie torfowym TS-1. Największe plony sałaty i bazylii otrzymano z uprawy roślin w substracie torfowym, a najmniejsze w samych kompostach OPA i OPB. W podłożu z dodatkiem 50% lub 25% kompostów plon roślin był większy lub porównywalny do uzyskanego w glebie mineralnej. Zawartość makroskładników zarówno w liściach sałaty jak i bazylii zależała od rodzaju zastosowanego podłoża.
Biological utilization of waste with a high content of organic matter, which include all the wood waste, by method of composting is a way to re-enable the matter to the natural cycle of nature. The aim of experiments was to determine the effect of two variants of the compost (OPA) and (OPB) obtained from post-consumer wood waste on the growth and nutritional status of lettuce and basil. Plants were grown in the compost or in substrates in which the compost was mixed with mineral soil in the relations of 1:1 or 1:3 by volume. Control plants were grown in mineral soil and peat substrate TS-1. The highest yields of lettuce and basil were obtained from plants growing in peat substrate, and the smallest in the pure composts OPA and OPB. In the substrate with 50% or 25% compost plant yield was greater than or comparable to that of the mineral soil. Macronutrient content of both lettuce and basil depend on the type of substrate.
Źródło:: Aparatura Badawcza i Dydaktyczna; 2012, 17, 4; 63-70
2392-1765
Pojawia się w:: Aparatura Badawcza i Dydaktyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The investigation of properties of blockboards made of post-consumer wood
Autorzy:: Gayda, Serhiy
Kiyko, Orest
Powiązania:: https://bibliotekanauki.pl/articles/2010870.pdf
Data publikacji:: 2020
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:: post-consumer wood
blockboards
mathematical model
physical properties
mechanical properties
characteristics
strength
recycling
technology
use
Opis:: Today in woodworking, there are problems with the use of wood waste and the accumulation of involved wood as an additional and not fully used resource. The problem has not been completely solved, as there is no scientific basis and practical recommendations for efficient production processes with predicting the properties of products made from Post-Consumer Wood (PCW), in particular in the production of blockboards (BB). The objective of the studies is to substantiate and develop a scientific and technical basis for resource-saving and environmentally friendly technologies, to establish the influence patterns of PCW properties on the mechanical characteristics of the products obtained, to develop operating parameters and to formulate practical recommendations, confirmed by the results of experimental studies. The studies have proved the expediency of using PCW in technological processes of woodworking, in particular in the production of construction materials - blockboards with predicted characteristics. In order to rationally use raw materials for the manufacture of conventional blockboards made from Post-Consumer Wood (PCW-BB), new designs of a conventional PCW blockboard with a thickness of 22 mm and with a unified strip width of 16, 32, 48, and 64 mm, the strips are glued ones, 3 mm thick, and faced with plywood on both sides. The authors of the article found that in order to ensure improved operating characteristics of the blockboards, it is important to lay radial, semi-radial and tangential strips in structures with the ratio of width to thickness of the cross-sections of the strips - rationally and efficiently - 1:1, 2:1, 3:1. Substantiation on this basis of new designs of PCW blockboards makes it possible to reveal shortcomings of these products at the conceptual stage of the project and correct them before manufacturing taking into account the specified technical conditions and reducing costs at the development stage. Mathematical models for predicting the main characteristics of conventional PCW blockboards (PCW-BB) have been constructed, which made it possible to determine the indexes of the bending strength of the BB across the strips, σBB, and the shear strength of the BB along the glue line, τВВ. The coefficients of approximation of mathematical dependencies for predicting the strength of PCW-BBs, the strips of which were made of fir wood, were calculated, which would allow for the selection of rational designs of blockboards with appropriate characteristics. It has been established that the developed mathematical models make it possible to predict the characteristics of the PCW-BB depending on the cross-sectional dimensions of the strips, the angle of the annual rings slope to the blockboard face and the age of the PCW, and, on this basis, to propose improved designs of these blockboards for the technological processes of woodworking. The influence patterns of the properties of structural elements on the indicators of conventional PCW-BB (500 × 500 × 22 mm) were experimentally established. It was found that an increase in the width of the strips leads to a decrease in the strength indexes (by 29-37%); an increase in the angle of the annual rings slope to the BB face leads to an increase in static bending strength (by 31-33%) but to a decrease in shear strength (by 4-7%); an increase in the age of the PCW leads to a decrease in strength indexes (by 3-8%). It was found that the physical and mechanical parameters of the experimental PCW-BBs with a strip cross-sections of 1:1, 2:1, 3:1 meet the requirements of the standard (larger values: for static bending of a rate of 15 MPa and for shearing at a rate of 1 MPa), and for the 4:1 cross- -section, they partially had lower indexes by 2-3%. To ensure the strength of the developed structures of the PCW-BBs, it is recommended to use the 3:1 ratio of the sides in the cross-section of the strips, and the slope of the annual rings to the blockboard face must be at least 45o. It was found that the deviation of the values obtained by mathematical models in determining the strength in static bending and shearing in comparison with the experimental ones did not exceed 8% and 10%, respectively.
Źródło:: Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2020, 63, 206; 77-102
1644-3985
Pojawia się w:: Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Struktura podaży odpadów drzewnych w Polsce
Waste wood supply structure in Poland
Autorzy:: Kurowska, A.
Powiązania:: https://bibliotekanauki.pl/articles/972970.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: odpady drzewne
leśnictwo
odpady z gospodarki leśnej
odpady przemysłowe
podaż
odpady poużytkowe
wastes from forestry
post−industrial waste wood
post−consumer waste wood
Opis:: Timber harvesting and wood processing are inseparably accompanied by various waste production. Waste wood, in the form of remains of tree care and correctly conducted logging operations, may be a product of forestry activities. It includes branches, boughs or rootwood. Post−industrial waste wood varies in form and the degree of shredding, and in terms of its contamination with both chemical compounds and mechanical or mineral pollutants. Daily living activities are a source of post−consumer waste wood, including demolition wood and furniture, the management of which is the most challenging task. Agricultural crop waste is a category that is often overlooked. It includes pruning waste, waste being an effect of plant regeneration in orchards and soft fruit plantations, or field or roadside shrub removal. The difficulty with assessing potential quantity of waste wood is to large extent caused by the lack of rational and comprehensive legal solutions. It should be noted that waste holders generating up to 10 t of sawdust, wood particles, wood, waste particleboards or veneer, or up to 10 t of waste bark or cork annually, are not obliged to keep a record of such waste. Another important factor hindering the determination of the supply of waste wood in Poland is the lack of a clear system of its classification. Consequently, there is no data concerning waste wood quantity. Considering the supply of wood materials and products, their characteristics and intended use, we can assumed that the greatest quantity contaminated waste is generated by furniture and wood−based panels industry. The paper also points out the inconsistencies in the literature regarding the determination of the potential waste wood base. In general, approximately 8.0 million m3 of post−industrial waste wood are generated in Poland every year. The supply of post−consumer waste wood is at a level of approximately 5.3 million m3. The supply of wastes from forestry and agricultural crop waste equals 3.8 million m3 and 0.4 million m3, respectively. So approximately 18.0 million m3 of waste wood, varying in terms of origin, form and properties, may be generated in Poland annually. Considering the wood shortage that can be observed in Poland, as well as the substantial quantities and availability of waste wood, these two latter factors may constitute an alternative source of wood raw materials for a number of sectors of the economy.
Źródło:: Sylwan; 2016, 160, 03; 187-196
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Odpady drzewne w świetle polskich i unijnych przepisów prawnych
Waste wood under Polish and European Union law
Autorzy:: Kurowska, A.
Powiązania:: https://bibliotekanauki.pl/articles/989847.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: odpady drzewne
odpady lesne
pozostalosci zrebowe
odpady pouzytkowe
drewno pouzytkowe
odpady przemyslowe
zagospodarowanie odpadow
przepisy prawne
przepisy polskie
przepisy unijne
waste wood
wastes from forestry
post−industrial waste wood
post−consumer waste wood
law
Opis:: No separate legislative acts are in force in Poland or the European Union that would regulate waste wood issues directly. Therefore, the analysis presented in this paper concerns legislation applying generally to waste, including waste wood. The issues discussed include terminology, classification and waste wood management. Pursuant to Directive 2008/98/EC, waste is any substance or object which the holder discards or intends or is required to discard. This definition of waste has remained unchanged in the amended Waste Act in Poland. Waste classification issues are partly resolved in the European Waste Catalogue. A national waste catalogue has been created, in which waste has been divided into 20 groups, depending on the source from which it is generated. Waste wood has been allocated to seven groups, and in particular to group 03. It is worth mentioning that the catalogue does not include a number of wood waste groups, namely OSB, fibreboard, plywood, board cutting waste, as well as products made from them, etc. This leads to problems with the interpretation of regulations concerning, in particular, the combustion of biomass. The priority task in waste management is waste prevention, followed by the preparation of waste for reuse, its recycling and finally other recovery methods, i.e. energy recovery or waste disposal. In view of the above, energy recover, as well as the reprocessing of waste into materials to be used as fuel or for backfilling or landfilling operations, is not a form of recycling. In spite of these assumptions, legislative acts are in force which regulate actions aimed at increasing the use of waste wood for energy recovery purposes. Regulations promoting the use of waste wood for energy recovery purposes can also be found in Polish legislation. The paper points out to the absence of clear and comprehensive legal solutions concerning waste wood management. This situation results in serious difficulties in the rational use of waste wood as one of the main sources of timber. It also leads to problems with estimating the quantity of waste wood and, consequently, prevents the correct assessment of its potential for use by particular sectors of the economy.
Źródło:: Sylwan; 2015, 159, 05; 355-360
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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