 |
Mechanism of Ethanol Vapours Diffusion in Particles of Activated Carbons
Bobok, D. and Besedová, E. Mechanism of Ethanol Vapours Diffusion in Particles of Activated Carbons Chemical Papers, Vol.58, No. 1, 2004, 55-63
|
|
|
Document type:
|
Článok z časopisu / Journal Article |
|
Collection:
|
Chemical papers
|
| |
| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n581a55.pdf
|
581a55.pdf |
application/pdf |
216.65KB |
0 |
| Author(s) |
Bobok, D.
Besedová, E.
|
| Title |
Mechanism of Ethanol Vapours Diffusion in Particles of Activated Carbons
|
| Journal name |
Chemical Papers
|
| Publication date |
2004
|
| Year available |
2004
|
| Volume number |
58
|
| Issue number |
1
|
| ISSN |
0366-6352
|
| Start page |
55
|
| End page |
63
|
| Place of publication |
Poland
|
| Publisher |
Versita
|
| Collection year |
2004
|
| Language |
english
|
| Subject |
290000 Engineering and Technology
290600 Chemical Engineering
|
| Abstract/Summary |
A gravimetric sorption method was employed for the estimation of effective diffusion coefficients of ethanol vapours in particles of activated carbons Supersorbon HS-4, Dezorex FB-4, Silcarbon SIL-15 Extra. The course of the stepwise adsorption of ethanol from a stream of air and the course of the stepwise desorption of ethanol by a stream of air with lower content of ethanol compared with that used for adsorption, or by a stream of pure air were examined. From measured data the effective diffusion coefficient De was calculated for each adsorption and desorption step. The calculated values of De were ranging from 4.06x10−11 to 1.42x10−9m2s−1 and the dependences of De on adsorbate concentration were found for all activated carbons. The transport of ethanol vapours in pores of activated carbons proceeds via combination of Knudsen diffusion and surface diffusion.
|
|
|
|
