Experimental and Numerical Investigation of the Effect of Pellet Size on the Adsorption Characteristics of Activated Carbon/Ethanol

Ahmed Elsayed, S. Mahmoud, R. Al-Dadah, J. Bowen, W. Kaialy

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Low temperature adsorption cooling is an attractive heat powered cooling technology suitable for various applications where waste heat is available. The use of activated carbon as adsorbent with ethanol offers potential for low temperature cooling applications like the food retail industry. Activated carbons are commercially available in the form of powders, granules and pellets. Although powder materials have the advantage of good adsorption kinetics but they are difficult to integrate in adsorption beds. Pellets and granules come at various shapes and sizes and can be effectively accommodated in adsorption beds but offer slower kinetics compared to the powder form. This work experimentally and numerically investigates the effect of pellet size on the ethanol adsorption characteristics of Norit RX3 activated carbon. Dynamic vapour sorption (DVS) testing was used for measuring the adsorption isotherms and kinetics for a range of pellet lengths ranging from 3mm to 12mm. COMSOL Multiphysics was used to simulate the adsorption effect taking into account the diffusion process. Results showed that increasing the pellet dimension in terms of diameter and length reduces the adsorption kinetics.
Original languageEnglish
Pages (from-to)2327–2330
JournalEnergy Procedia
Volume61
DOIs
Publication statusPublished - 2014

Fingerprint

Activated carbon
Ethanol
Adsorption
Kinetics
Cooling
Powders
Waste heat
Adsorption isotherms
Adsorbents
Sorption
Vapors
Temperature
Testing
Industry

Bibliographical note

The full text is available from http://dx.doi.org/10.1016/j.egypro.2014.11.1195

Keywords

  • Activated carbon
  • ethanol
  • adsorbent
  • COMSOL
  • adsorption kinetics

Cite this

Experimental and Numerical Investigation of the Effect of Pellet Size on the Adsorption Characteristics of Activated Carbon/Ethanol. / Elsayed, Ahmed; Mahmoud, S.; Al-Dadah, R.; Bowen, J.; Kaialy, W.

In: Energy Procedia, Vol. 61, 2014, p. 2327–2330.

Research output: Contribution to journalArticle

Elsayed, Ahmed ; Mahmoud, S. ; Al-Dadah, R. ; Bowen, J. ; Kaialy, W. / Experimental and Numerical Investigation of the Effect of Pellet Size on the Adsorption Characteristics of Activated Carbon/Ethanol. In: Energy Procedia. 2014 ; Vol. 61. pp. 2327–2330.
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