Identification of hard coal surface structure using polar and apolar small molecule substances
PBN-AR
Instytucja
Wydział Energetyki i Paliw (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Adsorption-Journal of the International Adsorption Society
ISSN
0929-5607
EISSN
1572-8757
Wydawca
Springer
DOI
Rok publikacji
2016
Numer zeszytu
4-6
Strony od-do
847--854
Numer tomu
22
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.57
Słowa kluczowe
EN
hard coal
modeling
adsorption
sorption
polar groups
Open access
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Creative Commons — Uznanie autorstwa
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Razem z publikacją
Streszczenia
Język
EN
Treść
The paper presents a numerical approach to the analysis of the statistical effect of functional groups on the sorption of methanol and water on hard coal samples. The material used for the analysis was obtained from numerous samples of hard subbituminous and bituminous coals up to anthracite from different Polish coal mines and includes sorption isotherms of water and methanol vapors, as well as carbon dioxide and methane on these samples. Measurements were made of the sorption isotherms of water and methanol vapors and the data set has been supplemented with the sorption isotherms of water, methane and carbon dioxide taken from the literature for the precise estimation of the model parameters. More precise estimation is reached by using a strong setting of the coal structure parameters for a bigger number of sorption system, and in each case the same parameters of coal geometry are constant with an exact fitting of sorption isotherm. The adsorption-absorption model of the sorption in coal (Multiple Sorption Model-MSM) is used in the numerical experiments and the parameters of hard coal structure and the sorption systems are estimated. It has been stated that water as a polar substance together with methanol, as well as carbon dioxide and methane give good estimates of coal structure and let us quantify the polar effect of surface groups present in hard coal. The polar effect is introduced in the model in the range of adsorption and expansion sub-processes. The presence of oxygen groups in the bulk of coal matter has no significant effect and can be neglected. A weak decreasing tendency of polar factors ratio for water and methanol is discovered.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:103609
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