Characterisation of Through‐Flowing Pores in Activated Carbon Pellets by the Method of Time‐Lag

Rutherford S.W., Nguyen C. and Do D.D. (1995) Characterisation of Through‐Flowing Pores in Activated Carbon Pellets by the Method of Time‐Lag. Developments in Chemical Engineering and Mineral Processing, 3 3-4: 125-137. doi:10.1002/apj.5500030302


Author Rutherford S.W.
Nguyen C.
Do D.D.
Title Characterisation of Through‐Flowing Pores in Activated Carbon Pellets by the Method of Time‐Lag
Journal name Developments in Chemical Engineering and Mineral Processing   Check publisher's open access policy
ISSN 1932-2143
Publication date 1995
Sub-type Article (original research)
DOI 10.1002/apj.5500030302
Volume 3
Issue 3-4
Start page 125
End page 137
Total pages 13
Subject 1500 Chemical Engineering
1909 Geotechnical Engineering and Engineering Geology
Abstract Pellets of finely sized activated carbon particles prepared in our laboratory and tailored to have differing BET surface areas were constructed. The time‐lag technique was employed to investigate the mass transfer of non‐sorbing and weakly sorbing gases in these pellets. This involved subjecting the pellet to known upstream pressure, and the pressure rise in the downstream volume (which was initially outgassed) was monitored. The diffusion coefficient representing the mass transfer into the particle network was found to be a complex Junction of the system parameters for all gases including helium, indicating the possibility of surface diffusion with Helium or that pellet heterogeneity affects the diffusion process. However, the molecular weight dependence of the observed flux is close to that predicted by the Knudsen diffusion equation, allowing the pores to be sized. Copyright
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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