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Effect of relative humidity on the adsorption of selected water-miscible organic vapors by activated carbon.

Authors
Kawar-KH; Underhill-DW
Source
Am Ind Hyg Assoc J 1999 Nov/Dec; 60(6):730-736
NIOSHTIC No.
20031263
Abstract
The adsorptive capacity of activated charcoal was determined experimentally for the vapors of 2-ethoxyethanol, pyridine, acetic acid, and piperidine from dry air and from air saturated with water vapor. Vapor concentrations ranged from 100 mg/m3 to at least 1000 mg/m3; the temperature was kept constant at 25 degrees C. The reduction in the adsorptive capacity of the activated charcoal by the relative humidity over the entire range of experimental conditions was accounted for by the Hansen-Fackler modification of the Dubinin-Radushkevich equation. This procedure allows the use of the activity coefficients, which are basic thermodynamic factors often available in the literature, to estimate the effect of adsorbed moisture on the adsorption of these organic compounds from a humidified atmosphere.
Keywords
Heat; Heat-conduction; Humidity; Mathematical-models; Thermodynamic-reactions; Air-monitoring; Air-quality-measurement; Air-sampling-techniques; Organic-compounds; Organic-chemicals
Contact
Dwight W. Underhill, School of Public Health, University of South Carolina, Columbia, SC 29208
CODEN
AIHAAP
CAS No.
110-80-5; 110-86-1; 64-19-7; 110-89-4
Publication Date
19991101
Document Type
Journal Article
Funding Amount
211038
Funding Type
Grant
Fiscal Year
2000
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-01644
Issue of Publication
6
ISSN
0002-8894
Source Name
American Industrial Hygiene Association Journal
State
IL; PA
Performing Organization
University of Pittsburgh at Pittsburgh, Pittsburgh, Pennsylvania
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