Effect of the temperature in adsorption phenomena of water onto Sub-Bituminous coal
The presence of water in coal presents a technological challenge for its industrial use in energetic processes. Therefore, this study aims to study the temperature effect on the water adsorption onto coals at 21, 30, 40 and 50°C. A Colombian bituminous coal was used as sample. The coal was character...
- Autores:
-
Taborda Acevedo, Esteban Alberto
Jurado, William
Cortés, Farid B.
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2016
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/61851
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/61851
http://bdigital.unal.edu.co/60663/
- Palabra clave:
- 55 Ciencias de la tierra / Earth sciences and geology
Adsorption
Coal
Isotherm
Water
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
| Summary: | The presence of water in coal presents a technological challenge for its industrial use in energetic processes. Therefore, this study aims to study the temperature effect on the water adsorption onto coals at 21, 30, 40 and 50°C. A Colombian bituminous coal was used as sample. The coal was characterized by nitrogen adsorption at 77 K (SBET), Scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, elemental analysis (C-H-N elemental). The results showed that the water uptake increased as the vapor pressure increased. The Talu and Meunier model [1] was used to fit the adsorption isotherms, and the mean square root error (MSRE%) was lower than 10%. Additionally, the Gibbs free energy was found to have negative values, which corroborates the spontaneous adsorption process. |
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