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Investigation of the distribution of chemical components in selected landfill layers and fly ash fractions

100%
Sambor A., Szymanek A.
Chemical and Process Engineering
|
2012
|
vol. 33
|
issue 2
221-229
EN
The article concerns fly ashes generated from the combustion of hard coal and deposited on landfills. Investigation results describing fly ash taken from a combustion waste landfill are presented in the article. The investigation results indicate a possibility for combusting the coal reclaimed by separation from the fly ash and utilizing the remaining fly ash fractions.
2
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Analysis of the Distribution of Chemical Compounds from Fly Ash Exposed to Weather Conditions

100%
Sambo A., Szymanek A.
Chemical and Process Engineering
|
2014
|
vol. 35
|
issue 3
265-275
EN
The paper presents investigation results of the migration of a chemical compound contained in fly ash deposited on a dry furnace waste landfill site exposed to weather conditions. Climate conditions are able to significantly affect chemical component distribution in a block of deposited, moving chemical compounds to different depths. The main aim of the investigations was to determine the chemical component distribution of deposited fly ash in the landfill. Identification of chemical components based on XRF analysis indicated the existence of differences in both tested storage layer and the fraction of fly ash.
3
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Limestone in flue gas desulphurisation in oxygenenriched atmospheres. Part II: The effect of CO2 on direct limestone sulphation

81%
Kochel A., Cieplińska A., Szymanek A.
Chemical and Process Engineering
|
2012
|
vol. 33
|
issue 3
359-367
EN
The article presents tests carried out on three selected samples of limestone originating from three commercially exploited deposits. The tests of sorbents included desulphurisation in different atmospheres and a physicochemical analysis of desulphurisation products. The aim of the tests was to determine desulphurisation efficiency and conversion degree as dependent on the concentration of O2 and CO2.
4
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Limestone in flue gas desulphurization in oxygen-enriched atmospheres - Part I: The effect of CO2on limestone calcination

81%
Kochel A., Cieplińska A., Szymanek A.
Chemical and Process Engineering
|
2012
|
vol. 33
|
issue 2
255-262
EN
The article describes the testing of four selected samples of limestone originating from four commercially exploited deposits. The tests of sorbents included a physicochemical analysis and calcination in different atmospheres. The main aim of the tests was to determine the possibilities for using limestone during combustion in oxygen-enriched atmospheres. Tests in a synthetic flue gas composition make it possible to assess the possibility of CaCO3 decomposition in atmospheres with an increased CO2 concentration.
5
Content available remote

Flue Gas Desulfurization by Mechanically and Thermally Activated Sodium Bicarbonate

81%
Walawska B., Szymanek A., Pajdak A., Nowak M.
Polish Journal of Chemical Technology
|
2014
|
vol. 16
|
issue 3
56-62
EN
This paper presents the results of study on structural parameters (particle size, surface area, pore volume) and the sorption ability of mechanically and thermally activated sodium bicarbonate. The sorption ability of the modified sorbent was evaluated by: partial and overall SO2 removal efficiency, conversion rate, normalized stoichiometric ratio (NSR). Sodium bicarbonate was mechanically activated by various grinding techniques, using three types of mills: fluid bed opposed jet mill, fine impact mill and electromagnetic mill, differing in grinding technology. Grounded sorbent was thermally activated, what caused a significant development of surface area. During the studies of SO2 sorption, a model gas with a temperature of 300°C, of composition: sulfur dioxide at a concentration of 6292 mg/mn3, oxygen, carbon dioxide and nitrogen as a carrier gas, was used. The best development of surface area and the highest SO2 removal efficiency was obtained for the sorbent treated by electromagnetic grinding, with simultaneous high conversion rate.
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