Autor: Ambrosewicz-Walacik, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Waste tires as a source of valuable chemicals
Autorzy:: Ambrosewicz-Walacik, M.
Walacik, M.
Powiązania:: https://bibliotekanauki.pl/articles/244309.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: waste tyres
pyrolysis
pyrolytic oil
chemical composition
Opis:: The aim of the study was to determine the possibility of the isolation of valuable chemical compounds from pyrolysis oil obtained from the pyrolyzed waste car tires. Produced pyrolysis oil were subjected to a distillation process to isolate medium naphtha fraction average naphtha that contains limonene, which according to the literature data, can be used as an environmental friendly solvent in a number of cleaning agents. Considering the boiling point of limonene (176°C), the medium fraction of the separated oil was re-distilled to isolate compounds with temperature of boiling point between 174-177°C. The prepared sample was analysed by gas chromatography coupled with mass spectroscopy. Based on the chromatographic analysis, it was found that in a separate sample of pyrolysis oil the highest share constituted toluene, and then cyclobutane, benzene derivatives, which is essential in the chemical industry. The share of limonene was low (approx. 1%), what is explained by too high temperature of the pyrolytic process. The results of analysis and literature allow unequivocally state that in order to separate specific compounds from pyrolytic oil, parameters of this process should be first determined in pilot studies. In conclusion, it is believed that the pyrolysis of tires is suitable method of disposing of the waste, thereby obtaining products containing valuable compounds for the fuel and chemical industries.
Źródło:: Journal of KONES; 2016, 23, 2; 25-29
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Spectrofluorimetry of chosen distillates of oil after pyrolysis of scrap tires
Autorzy:: Otremba, Z.
Ambrosewicz-Walacik, M.
Powiązania:: https://bibliotekanauki.pl/articles/245271.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuels
used car tires
pyrolysis
fluorescence
excitation-emission spectra
Opis:: One of way to obtain liquid hydrocarbons can be pyrolysis of scrap tires. The hydrocarbon substances produced by this method may be an addition to traditional fuels, i.e. gasolines or fuels for diesel engines. In laboratory conditions at Department of Mechatronics of University of Warmia and Mazury there were obtained pyrolytic products and prepared three distillates related to temperatures 160, 204 and 350ºC. Analyses of shapes of fluorescence spectra were carried out in Department of Physics of Gdynia Maritime University. Spectra of fluorescence were prepared applying the spectrofluorimeter Hitachi F-7000 FL, which allows applying of excitation wavelength from 200 nm until 600 nm, whereas analysing of emitted, can be performed until 750 nm. In here reported study excitation and emission range for the most intense fluorescence are presented. There were prepared four solutions of pyrolytic products in the n-hexane: 4 ppm, 20 ppm, 100 ppm and 500 ppm. In order to show dependence of intensity fluorescence and shapes of excitation-emission spectra on type of distillate and concentration both kind of visualization – three-dimensional and as contour maps – are shown in this article. In analysed range of wavelengths, intensity of fluorescence grows with concentration of oil, whereas structure of the shape of spectra simplify when concentration increases. The presented effects associated with the fluorescence of pyrolysis products allow to predict the possibility of developing a method for determining the content of these substances in mixtures with petroleum refining products and other liquid hydrocarbons.
Źródło:: Journal of KONES; 2018, 25, 2; 262-268
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

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

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