Determination of an improved linear driving force equation for adsorption of ethanol on activated carbon fiber.
Author(s) : SHARKAWY I. I. el-, SAHA B. B., CHAKRABORTY A., et al.
Summary
In the paper, the adsorption rate of ethanol on activated carbon fiber (ACF) of type (A-20) has been measured using a thermogravimetric analyser unit over a wide range of adsorption temperatures, which is useful for adsorption chillers design. The mass uptake is measured accurately with a time interval of 0.5 seconds from which the diffusion time constant and consequently, the overall mass transfer coefficient could be evaluated. A novel concentration profile with an exponent parameter k has been proposed in the theoretical model which accounts for the effect of meso- and micro-pore structures with the ACF. The proposed concentration profile removes the restrictions between the overall mass transfer coefficient and the diffusion time constant. Using the measured kinetics, the numerical value of k is evaluated, leading to a new form of linear driving force model for cylindrical adsorbent that could capture the higher ethanol uptake in ACF and this linear driving force model has been validated experimentally.
Details
- Original title: Determination of an improved linear driving force equation for adsorption of ethanol on activated carbon fiber.
- Record ID : 2007-0657
- Languages: English
- Source: ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
- Publication date: 2006/05/21
Links
See other articles from the proceedings (161)
See the conference proceedings
Indexing
- Themes: Absorption and adsorption systems
- Keywords: Correlation; Calculation; Measurement; Mass transfer; Activated carbon; Adsorption system; Fibre; Ethanol
-
Adsorption of ethanol on activated carbon fiber...
- Author(s) : KOYAMA S., KARIYA K., SHARKAWY I. I. el-, et al.
- Date : 2006/05/21
- Languages : English
- Source: ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
View record
-
Experiments for measuring adsorption characteri...
- Author(s) : SAHA B. B., KOYAMA S., SHARKAWY I. I. el-, et al.
- Date : 2006/08
- Languages : English
- Source: HVAC&R Research - vol. 12 - n. 3b
View record
-
Isosteric heats of adsorption extracted from ex...
- Author(s) : SHARKAWY A. I. el-, SAHA B. B., KOYAMA S., et al.
- Date : 2007/03
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 50 - n. 5-6
View record
-
Heat and mass transfer analysis for adsorber de...
- Author(s) : KOYAMA S., KARIYA K., KUWAHARA K., et al.
- Date : 2007/08/21
- Languages : English
- Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
View record
-
Experimental investigation of activated carbon ...
- Author(s) : SHARKAWY I. I. el-, KUWAHARA K., SAHA B. B., et al.
- Date : 2006/06
- Languages : English
- Source: Applied Thermal Engineering - vol. 26 - n. 8-9
View record