The Effect of Moisture on the Adsorption of Xenon by Activated Carbon

Details

• Personal Author:
  Lungu C ; Underhill D
• Description:
  The following procedure was used to determine the effect of moisture on the adsorption of xenon from air onto activated carbon: A known amount of water is added to a sample of dried activated carbon and allowed to equilibrate. This activated carbon is then split between two cylindrical beds placed in a temperature controlled water bath, and air is passed through the beds sequentially. Because the beds contain pre-moistened activated carbon from the same sample, the first bed acts as a buffer, maintaining a constant humidity in the second. The mean holdup time of a pulse of 133Xe injected into the second bed is used to determine the adsorption coefficient for xenon under these conditions. Measurements were made for three carbons activated to 35, 40, and 59%, respectively, at temperatures of 25 degrees C and 55 degrees C. The effect of moisture on the same activated carbon at these two temperatures shows an affine relationship that could be helpful in extending these results to other temperatures. At low moisture uptakes, a plot of the log(adsorption coefficient) vs. moisture uptake gives a straight line. [Description provided by NIOSH]
• Subjects:
  Humidity Occupational Health Safety Temperature
• Keywords:
  Adsorption Author Keywords: Activated Carbon Gas Adsorption Radioactive Measurement Relative Humidity Temperature Effects Water
• ISSN:
  0017-9078
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 4 ; South Carolina
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  298-302
• Volume:
  77
• Issue:
  3
• NIOSHTIC Number:
  nn:20057718
• Citation:
  Health Phys 1999 Sep; 77(3):298-302
• Contact Point Address:
  D. Underhill, School of Public Health, University of South Carolina, Columbia, SC 29208
• CAS Registry Number:
  Carbon (CAS RN 7440-44-0) ; Xenon (CAS RN 7440-63-3)
• Federal Fiscal Year:
  1999
• Performing Organization:
  Arnold School of Public Health, University of South Carolina, Columbia
• Peer Reviewed:
  True
• Start Date:
  19940701
• Source Full Name:
  Health Physics
• End Date:
  20040630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f3a05e2e0d9b4a3aca38335323605e459f0f6fdd2b79dbbb21e9eee5220ecfd2583e77e2eadf745c62c1653f24ec416f8c6b67fc3c8c8d5f397ead0fc5c86e09
• Download URL:
  https://stacks.cdc.gov/view/cdc/214968/cdc_214968_DS1.pdf
• File Type:
  [PDF - 216.60 KB ]