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Wyświetlanie 1-15 z 167
Tytuł:
Comparative analysis of fuels derived from pe plastic waste with a mixture of plastic recycling waste of codes: 1, 2, 4, 5, 6 and 7 based on low-temperature pyrolysis
Autorzy:
Lesnau, Anna
Tyliszczak, Mirosław
Powiązania:
https://bibliotekanauki.pl/articles/247043.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
pyrolysis
plastics
waste
Opis:
Thanks to their numerous advantages, plastics are becoming more and more widely used in all branches of industry. The quantities of products, their packaging and, consequently, the amount of synthetic polymer waste are steadily increasing, what poses a high risk to the environment due to their long decomposition time. To reduce waste production is practically impossible, therefore it is very important to constantly implement new and improve existing methods of waste treatment. The following article presents one of the alternative methods for synthetic polymer waste treatment, which is low-temperature pyrolysis. Two pyrolysis processes were carried out. During the first experiment a polyethylene plastic material was used, in the second experiment a mixture of typical household recycling waste of codes 1, 2, 4, 5, 6, and 7 were tested. During the thermal processing, the input material undergoes a chemical transformation due to breaking of long hydrocarbon chains. At the same time, high-energy density products, such as petroleum products and gas, are produced. The main advantage of the presented method is that it allows reducing preliminary technological processes to a minimum and it is easily automated, as it reduces the process to one compact installation. The reduction of the amount of stored waste and the recovery of petroleum derivatives, are additional advantages of pyrolysis implementation. That, in consequence allows reducing consumption of fossil fuel resources.
Źródło:
Journal of KONES; 2019, 26, 4; 149-154
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of drying and pyrolysis in a gasifier during the startup phase
Autorzy:
Ciżmiński, P.
Polesek-Karczewska, S.
Kardaś, D.
Powiązania:
https://bibliotekanauki.pl/articles/175590.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
moisture
evaporation
condensation
pyrolysis
Opis:
An appropriate arrangement of particular zones in the gasifier is of practical importance for the gasification process effectiveness. One of the parameters that affects the optimum reactor operation and has to be taken into account is the speed of bed movement. The transient one-dimensional model describing the heat and mass transfer in the upper section of the biomass fixed bed gasifier that covers the zones of evaporation and pyrolysis, was introduced. To study the effect of packed bed settling resulted from the wood particles’ volume change due to their devolatilization, the simulations for various bed movement speeds were performed. The computation results indicated, as expected, on the different distribution of pyrolysis and drying zones, depending on the speed value. The clear tendency towards the reduction of pyrolysis zone, and on the other hand, towards the expansion of drying zone, with an increasing movement speed was observed.
Źródło:
Transactions of the Institute of Fluid-Flow Machinery; 2015, 128; 73-83
0079-3205
Pojawia się w:
Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of pyrolysis process in processing of mixed food wastes
Autorzy:
Grycová, B.
Koutník, I.
Pryszcz, A.
Kaloč, M.
Powiązania:
https://bibliotekanauki.pl/articles/778553.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
pyrolysis
gas chromatography
food waste
Opis:
The food industry produces large amounts of solid and also liquid wastes. Different waste materials and their mixtures were pyrolysed in the laboratory pyrolysis unit to a final temperature of 800°C with a 10 minute delay at the final temperature. After the pyrolysis process of the selected wastes a mass balance of the resulting products, off-line analysis of the pyrolysis gas and evaluation of solid and liquid products were carried out. The highest concentration of methane, hydrogen and carbon monoxide were analyzed during the 4th gas sampling at a temperature of approx. 720–780°C. The concentration of hydrogen was measured in the range from 22 to 40 vol.%. The resulting iodine numbers of samples CHFO, DS, DSFW reach values that indicate the possibility of using them to produce the so-called “disposable sorbents” in wastewater treatment. The WC condensate can be directed to further processing and upgrading for energy use.
Źródło:
Polish Journal of Chemical Technology; 2016, 18, 1; 19-23
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomass heat centres
Autorzy:
Urbonienė, Virginija
Powiązania:
https://bibliotekanauki.pl/chapters/4177695.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
biomass
biogas
pyrolysis
bioreactor
plants
Opis:
The classification of solid biofuel depends upon the determination of the fuel origin and it is divided into (LST EN 14961-1): wood biomass, herbaceous biomass, fruit biomass, biomass mixtures. Biomass burning is the conversion of accumulated energy. Most part of the energy produced from biomass causes heat, which is gained by burning wood, firewood, wood pellets, wood chips, wood sawdust, etc.
Źródło:
Buildings 2020+. Energy sources; 181-212
9788365596727
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bio Oil Production by Thermal and Catalytic Pyrolysis of Waste Tires
Autorzy:
Khalaf, Dunya Ahmed
Abudi, Zaidun Naji
Dhaher, Saadi Muhammed
Powiązania:
https://bibliotekanauki.pl/articles/1955496.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
waste tires
pyrolysis
catalyst
limonene
Opis:
In this study, pyrolysis of shredded waste tire was carried out thermally and catalytically in a fixed bed reactor. Thermal pyrolysis was performed at temperatures of 330 °C, 430 °C, 530 °C, and 630 °C under Ar. flow rate of 0.5 L/min as a carrier gas and retention time of 15 min catalytic pyrolysis was carried out at temperature of 530 °C. The effects of temperature and two types of catalysts (CaCO3 and SiO2/Al2O3) were studied on the yield of pyrolysis products. Fourier transform infrared spectroscopy (FTIR) and Gas chromatography mass spectrometry (GC-MS) analysis for the oil products that were obtained by thermal and catalytic pyrolysis at 530 °C for chemical characterization. Oil, solid, and gas products yield by thermal pyrolysis at 530 °C were 50 wt. %, 35.6 wt. %, and 14.4 wt. % respectively, when the CaCO3 catalyst was used, the products distribution was 52 wt. %, 38.5 wt. %, and 9.5 wt. % respectively. While using SiO2 /Al2O3 the pyro oil, and char, and gas were decreased to 47 wt. %, 38 wt. %, and 15 wt. % respectively. The chemical composition of pyrolysis oil mainly included hydrocarbons compounds, predominantly Limonene which was represented by Cyclohexene, 1-methyl-4-(1-methylethenyl).
Źródło:
Journal of Ecological Engineering; 2021, 22, 8; 189-199
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance of a drop-in biofuel emulsion on a single-cylinder research diesel engine
Autorzy:
Bogarra-Macias, M.
Doustdar, O.
Fayad, M. A.
Wyszyński, M. L.
Tsolakis, A.
Ding, P.
Pacek, A.
Martin, P.
Overend, R.
O'Leary, S.
Powiązania:
https://bibliotekanauki.pl/articles/133126.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
pyrolysis oil
emulsion
wood pyrolysis
engine testing
olej popirolityczny
emulsja
piroliza drewna
badania silnika
Opis:
Current targets in reducing CO2 and other greenhouse gases as well as fossil fuel depletion have promoted the research for alternatives to petroleum-based fuels. Pyrolysis oil (PO) from biomass and waste oil is seen as a method to reduce life-cycle CO2, broaden the energy mix and increase the use of renewable fuels. The abundancy and low prices of feedstock have attracted the attention of biomass pyrolysis in order to obtain energy-dense products. Research has been carried out in optimising the pyrolysis process, finding efficient ways to convert the waste to energy. However, the pyrolysis products have a high content in water, high viscosity and high corrosiveness which makes them unsuitable for engine combustion. Upgrading processes such as gasification, trans-esterification or hydro-deoxynegation are then needed. These processes are normally costly and require high energy input. Thus, emulsification in fossil fuels or alcohols is being used as an alternative. In this research work, the feasibility of using PO-diesel emulsion in a single-cylinder diesel engine has been investigated. In-cylinder pressure, regulated gaseous emissions, particulate matter, fuel consumption and lubricity analysis reported. The tests were carried out of a stable non-corrosive wood pyrolysis product produced by Future Blends Ltd of Milton Park, Oxfordshire, UK. The product is trademarked by FBL, and is a stabilized fraction of raw pyrolysis oil produced in a process for which the patent is pending. The results show an increase in gaseous emissions, fuel consumption and a reduction in soot. The combustion was delayed with the emulsified fuel and a high variability was observed during engine operation.
Źródło:
Combustion Engines; 2016, 55, 3; 9-16
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Use of Biochar from Organic Waste Pyrolysis in Agriculture and Environmental Protection
Autorzy:
Niedziński, Tomasz
Łabętowicz, Jan
Stępień, Wojciech
Pęczek, Tadeusz
Powiązania:
https://bibliotekanauki.pl/articles/24201688.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
biochar
pyrolysis
carbon
soil
resource recovery
Opis:
Nowadays, research on the use of pyrolysis products in the broadly understood economy is widely conducted in the world. This publication presents the results of research on the use of biochar primarily as a material for use in agriculture and environmental protection. In particular, its use to improve soil properties and as a component of organic fertilisers or composts, as well as an ingredient for animal bedding in livestock buildings or an additive for silage is discussed. In addition, the possibilities of using biochar in the energy sector as a solid fuel and in the broader field of environmental protection for remediation of contaminated land, for carbon sequestration and as a raw material for the production of activated carbons are discussed.
Źródło:
Journal of Ecological Engineering; 2023, 24, 4; 85--98
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Future-oriented waste management technology for Ward-6, Bogura, Bangladesh – a step towards sustainability
Autorzy:
Dinnar, Sajjad Hossain
Islam, Shobnom
Singh, Manpreet
Gaba, Rishab
Powiązania:
https://bibliotekanauki.pl/articles/2055770.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
sustainability
landfill
pyrolysis
hydrothermal liquefaction
gasification
Opis:
Rapid urbanization combined with high economic growth, industrialization, and changes in socio-economic conditions increase the quantity of municipal solid waste. Cities located in South-Asia are facing serious issues due to waste, with countries like India, Bangladesh, and Pakistan top of the list of bad waste management. The increasing generation of solid waste and also the improper management of waste in Bangladesh leads to environmental degradation. Current waste management practice in Bangladesh is so weak that day by day it is harming the climate and creating a lot of unwanted situations. This research consists of an examination of the current administrative measures and presents another proposition for the executive cycle to decrease ecological contamination. The research study aims to decrease the amount of waste being dumped into municipal sanitary landfill sites & converting the waste into energy which is both financially and environmentally suitable by involving unemployed people in the management system. The results of this study will give an idea of how waste can be utilized as a resource and how this resource can be a capital good as well as how the local level problems can be solved by taking some strategies and making our environment suitable for future generations.
Źródło:
Geomatics and Environmental Engineering; 2022, 16, 1; 5--15
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectrofluorometric characterization of oil from pyrolysis of scrap tires
Autorzy:
Ambrosewicz-Walacik, M.
Piętak, A.
Powiązania:
https://bibliotekanauki.pl/articles/950184.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
fuels
used car tires
pyrolysis
fluorescence
Opis:
Almost all kinds of fuel applied in combustion engines come from refining industry, in which crude oil serves as basic raw material. However, there are also searched other sources of hydrocarbons which can be used directly or as additives to conventional fuels. The most popular in this regard are vegetable oils such as rapeseed oil, from which are produced esters used as fuel for diesel engines. On the other hand, as additives to gasoline can be used alcohols derived from the fermentation of agricultural products. Another way to obtain liquid hydrocarbons is pyrolysis of scrap tires. In this article, such pyrolytic product is analysed in terms of its fluorescence properties compared to the fluorescent properties of substances derived from the distillation of the pyrolysis product in three following temperatures: 160, 204 and 350 ºC. All the tested substances show relatively strong fluorescence in ultraviolet range. Fluorometric spectra were performed applying the spectrofluorometer Hitachi F-7000 FL with 1x1 cm quartz cuvette. Studied substances were previously diluted in n-hexane to obtain concentration 4 ppm. Amount of fluorescent peaks and their positions depends on kind of distillate. Ipso facto fluorescence method seems be suitable much more – than chemical analyse – for quick identification of substances constituting a components of distillate obtained from pyrolytic product.
Źródło:
Journal of KONES; 2016, 23, 1; 25-30
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pyrolysis of biomass and refuse-derived fuel performance in laboratory scale batch reactor
Autorzy:
Kluska, J.
Klein, M.
Kazimierski, P.
Kardaś, D.
Powiązania:
https://bibliotekanauki.pl/articles/240079.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
slow pyrolysis
fast pyrolysis
oil
refuse derived fuel
powolna piroliza
szybka piroliza
olej
paliwo z odpadów
Opis:
The results of pyrolysis of pine chips and refuse derived fuel fractions are presented. The experiments were carried out in a pilot pyrolysis reactor. The feedstock was analyzed by an elemental analyzer and the X-ray fluorescence spectrometer to determine the elemental composition. To find out optimum conditions for pyrolysis and mass loss as a function of temperature the thermogravimetric analysis was applied. Gases from the thermogravimetric analysis were directed to the infrared spectrometer using gas-flow cuvette to online analysis of gas composition. Chemical composition of the produced gas was measured using gas chromatography with a thermal conductivity detector and a flame ionization detector. The product analysis also took into account the mass balance of individual products.
Źródło:
Archives of Thermodynamics; 2014, 35, 1; 141-152
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
From biomass towards syngas
Autorzy:
Kardaś, D.
Powiązania:
https://bibliotekanauki.pl/articles/175554.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biomass
pyrolysis
gasification
bed subsidance
reactions
Opis:
The article presents and overview of selected physical and chemical issues relating to biomass gasification. It also includes the history of the development of thermal wood treatment technology, with particular attention paid to Polish threads. Basic physical and chemical properties of biomass are discussed, using wood and straw as representative examples. Main types of gravitational gasifying reactors are presented, along with the analysis of basic mechanisms of homogeneous and heterogeneous chemical reactions in the reactor bed. The equation of motion of bed particles is derived based on particle volume changes caused by pyrolysis and surface reactions.
Źródło:
Transactions of the Institute of Fluid-Flow Machinery; 2015, 127; 63-89
0079-3205
Pojawia się w:
Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural and optical properties of nanocrystalline CdS films prepared by spray pyrolysis
Autorzy:
Aljarrah, Radhyah M. S.
Aljobory, Adnan H.
Powiązania:
https://bibliotekanauki.pl/articles/1179009.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cadmium Sulphide
CdS films
spray pyrolysis
Opis:
Cadmium Sulphide (CdS) thin films are produced using spray pyrolysis deposition technique. Films are annealed in air at 400, 500, and 600 K of 1 h. It characterized by X-Ray Diffraction (XRD), Atomic Force Microscope (AFM) and optical properties of CdS. XRD shows that these films are polycrystalline in nature with cubic and hexagonal crystalline structure. The crystallite size, microstrain, and dislocation density were measured. AFM shows that the total substrate surface is finely covered with uniformly distributed spherical shaped grains. Optical transmittance was shown that direct transition with band gap energy was decreased between 2.44 to 2.27 eV with annealing.
Źródło:
World Scientific News; 2017, 87; 175-190
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Organic bio-wastes as potential precursors used for preparation of activated carbons- review
Autorzy:
Zięzio, Magdalena
Charmas, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/2079939.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
bio-wastes utilization
pyrolysis
activated carbons
Opis:
Currently significant amounts of wastes, which pose a real threat to the natural environment and human health, are produced worldwide. One way to get rid of waste materials is to dispose them in landfills but some of them no longer perform their function due to overfilling. For this reason, scientists pay more and more attention to the search for  their possible disposal and/or recycling, as it is impossible to prevent its generation completely. Recently, many researchers have taken up the topic of the use of agri-food wastes due to their low cost and widespread availability as a starting material for the production of activated carbons. As a result, it was found out that organic wastes are very successful precursors of organic matter and the obtained activated carbons are characterized by a very well developed porous structure. The paper presents a literature review regarding the possibility of using various waste materials under different impregnation and preparation conditions to obtain activated carbons with a developed surface area and good adsorption properties.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia; 2019, 74, 1; 9-29
2083-358X
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adsorbent Characterization from Cocoa Shell Pyrolysis (Theobroma cacao L) and its Application in Mercury Ion Reduction
Autorzy:
Nursiah, Cut
Desvita, Hera
Elviani, Elviani
Farida, Nurlia
Muslim, Abrar
Rosnelly, Cut Meurah
Mariana, Mariana
Suhendrayatna, Suhendrayatna
Powiązania:
https://bibliotekanauki.pl/articles/24202895.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
characterisation
pyrolysis
adsorbent
cocoa shell
mercury ion
Opis:
In this paper, we describe the characterization and application of adsorbent derived from the pyrolysis of cocoa shells, which is a natural source of adsorbent materials. The adsorbent that was used in this experiment is an environmentally friendly adsorbent that was prepared by the pyrolysis of cocoa shells. For 1.5 hours, the pyrolysis process was carried out at temperatures ranging from 300 to 380 °C. The adsorbent was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and analysis with an X-ray diffraction (XRD) analyzer. Water-ash content and iodine absorption capacity were also determined in accordance with SNI 06-3730-1995. At a contact time of 90 minutes, the adsorption capacity of mercury ions was found to be 0.106 mg/gram. In this study, the adsorption of mercury ions with the adsorbent followed pseudo-second-order models with an R2 value of 0.9929.
Źródło:
Journal of Ecological Engineering; 2023, 24, 6; 366--375
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental study of thermal pyrolysis of turkey feathers
Autorzy:
Kardaś, D.
Kluska, J.
Szuszkiewicz, J.
Szumowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/298156.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
thermal pyrolysis
turkey feathers
gaseous products
reactor
Opis:
The analysis of chemical composition of turkey feathers reveals over 50% mass content of carbon. Unfortunately, the feathers contain also over 13% by weight of nitrogen and over 2.5% of sulfur. The significant presence of nitrogen and sulfur in turkey feathers indicates potential danger to the environment. The experiments of thermal pyrolysis of turkey feathers were done from a perspective of energy production potential out of gaseous products. The products of thermal pyrolysis were mainly gas and liquid. The calorific value of pyrolysed feathers is comparable with the one of hard carbon. It gets higher for higher temperatures. The calorific value of gaseous products of turkey feathers at 850oC was maximum and it equalled 16.7 MJ/Nm3.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2015, 18(2); 115-124
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 167

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