Effect of Relative Humidity on the Adsorption of Selected Water-Miscible Organic Vapors by Activated Carbon

Details

• Personal Author:
  Kawar KH ; Underhill DW
• Description:
  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. [Description provided by NIOSH]
• Subjects:
  Environmental Monitoring Hot Temperature Humidity Occupational Health Safety
• Keywords:
  Air-monitoring Air-quality-measurement Air-sampling-techniques Heat Heat-conduction Mathematical-models Organic-chemicals Organic-compounds Thermodynamic-reactions
• ISSN:
  0002-8894
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Illinois ; OSHA Region 3 ; OSHA Region 4 ; OSHA Region 5 ; Pennsylvania ; South Carolina
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  60
• Issue:
  6
• NIOSHTIC Number:
  nn:20031263
• Citation:
  Am Ind Hyg Assoc J 1999 Nov/Dec; 60(6):730-736
• Contact Point Address:
  Dwight W. Underhill, School of Public Health, University of South Carolina, Columbia, SC 29208
• CAS Registry Number:
  Acetic acid (CAS RN 64-19-7) ; Glycol monoethyl ether (CAS RN 110-80-5) ; Piperidine (CAS RN 110-89-4) ; Pyridine (CAS RN 110-86-1)
• Federal Fiscal Year:
  2000
• Performing Organization:
  University of Pittsburgh at Pittsburgh, Pittsburgh, Pennsylvania
• Peer Reviewed:
  True
• Start Date:
  19840401
• Source Full Name:
  American Industrial Hygiene Association Journal
• End Date:
  19870331
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:4c4083437252dabbf2f24d0898e90b01f9211ecc2a3fc9277f082330d313e105d1f9f72ba220460d018ea7112a26ee400e4afbd689410fb63be5a53c389b1a9d
• Download URL:
  https://stacks.cdc.gov/view/cdc/191564/cdc_191564_DS1.pdf
• File Type:
  [PDF - 369.44 KB ]