A fundamental study on the removal of air pollutants (sulfur dioxide, nitrogen dioxide and carbon dioxide) by adsorption on activated carbon

Gray P.G. (1993) A fundamental study on the removal of air pollutants (sulfur dioxide, nitrogen dioxide and carbon dioxide) by adsorption on activated carbon. Gas Separation and Purification, 7 4: 213-224. doi:10.1016/0950-4214(93)80020-W


Author Gray P.G.
Title A fundamental study on the removal of air pollutants (sulfur dioxide, nitrogen dioxide and carbon dioxide) by adsorption on activated carbon
Journal name Gas Separation and Purification
ISSN 0950-4214
Publication date 1993-01-01
Sub-type Article (original research)
DOI 10.1016/0950-4214(93)80020-W
Volume 7
Issue 4
Start page 213
End page 224
Total pages 12
Subject 1500 Chemical Engineering
Abstract Gravimetrically measured adsorption and desorption dynamics of sulfur dioxide, nitrogen dioxide and carbon dioxide on a commercial activated carbon are interpreted by a single-particle model based on three transport processes: macropore, micropore and sorbed-phase diffusion. Additional phenomena, concentration-dependent sorbed-phase diffusivity and sorbent non-isothermality, are incorporated to expand the applicability of the model. The dynamic sorption behaviour of all three gases is adequately described, without resorting to a different particle tortuosity factor for each sorbate. The value of the tortuosity factor (8) and the extracted diffusion coefficients are consistent with literature values. The affinity of the activated carbon for the adsorbates is, in increasing order, CO2 < SO2 < NO2, while the extracted diffusion coefficients show the reverse trend, NO2 < SO2 < CO2.
Keyword macropore
micropore
non-linear isotherm
surface diffusion
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

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