Validation of Using a Modified BET Model to Predict the Moisture Adsorption Behavior of Bituminous Coal

A good correlation exists between the amount of moisture adsorbed and the oxygen content of medium-rank B vitrinite-rich and medium-rank C inertinite-rich bituminous coal. Total mass moisture adsorbed per gram of coal determined from the modified BET model provides a better approximation than the BE...

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Veröffentlicht in:International journal of coal preparation and utilization Jg. 36; H. 1; S. 28 - 43
Hauptverfasser: Strydom, C. A., Campbell, Q. P., le Roux, M., du Preez, S. M.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Abingdon Taylor & Francis 02.01.2016
Taylor & Francis Ltd
Schlagworte:
Adsorption
Approximation
BET model
Bituminous coal
Coal
Coal industry
Hysteresis loops
Mathematical analysis
Mathematical models
Modified BET model
Moisture
Oxygen content
ISSN:1939-2699, 1939-2702
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Zusammenfassung:A good correlation exists between the amount of moisture adsorbed and the oxygen content of medium-rank B vitrinite-rich and medium-rank C inertinite-rich bituminous coal. Total mass moisture adsorbed per gram of coal determined from the modified BET model provides a better approximation than the BET model. The relationship between the modified BET moisture monolayer coverage and the area of surface oxygen groups suggests that moisture is adsorbed at these sites. Oxygen content is a good indicator of the amount of moisture adsorbed on bituminous coal. Open hysteresis loops indicate that moisture is retained on medium-rank C inertinite-rich bituminous coals.
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ISSN:1939-2699
1939-2702
DOI:10.1080/19392699.2015.1049264