Removal of Gases and Vapors

Details

• Personal Author:
  Underhill D
• Description:
  Why spend money to clean the air we breathe when outdoor air is free and (we hope) uncontaminated? One reason is that air that appears clean even to the EPA may still be too polluted to use, for example, in museums and libraries, where even trace levels of contaminants can do irreparable harm. Zoos, restaurants, and funeral homes, to give another set of examples, may produce their own air pollutants in unacceptable concentrations. And finally, we produce our own pollution-we release odors into the ambient air, and it may be more economical to cleanse the indoor air and recycle a certain fraction of it than heating (or cooling), and possibly humidifying or dehumidifying the fresh air from the outside. Unwanted vapors can be removed by many different procedures, but only adsorption has found widespread use. Other procedures-including absorption by liquid sprays, condensation, catalytic combustion, photocatalysis, plasma-induced reactions, and pressure · swing adsorption, may be used for specialized purposes, such as by the military, where the outside air could be highly contaminated and exceptional treatment is needed. Additionally, the development of low-temperature catalyses may lead to their particular uses, including treating air brought into the passenger space of automobiles. Also, at high altitudes (e.g., 60,000 ft), ozone can enter the troposphere from the stratosphere through a process of tropopause folding. For this reason catalytic procedures are commonly used to remove ozone from the ventilation air of high-flying aircraft. This chapter reviews current developments in these areas, with emphasis on the most common procedure: adsorption. [Description provided by NIOSH]
• Subjects:
  Air Pollution Air Pollution, Indoor Occupational Health Safety Solvents
• Keywords:
  Adsorption Air Pollution Air Treatment Equipment Gas Adsorption Gases IAQ Indoor Air Quality Indoor Environments Vapors
• ISBN:
  9780074455494
• Publisher:
  McGraw-Hill Publishers
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Book
• Place as Subject:
  OSHA Region 4 ; South Carolina
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20057843
• Citation:
  Indoor air quality handbook. Spengler JD, Samet MJ, McCarthy JF eds. New York: McGraw-Hill Publishers, 2000 Dec; :10.1-10.19
• Editor(s):
  Spengler JD; Samet MJ; McCarthy JF
• Federal Fiscal Year:
  2001
• Performing Organization:
  Arnold School of Public Health, University of South Carolina, Columbia
• Peer Reviewed:
  False
• Start Date:
  19940701
• Source Full Name:
  Indoor air quality handbook
• End Date:
  20040630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:123176f3511bd4de0596e3c6adfb4467e933af3836a112139b6f2f9422be3413314a5df851e0c601bd7ed6b17fd2c1a4c6ba8f98e8196d1e9cd794f920b33301
• Download URL:
  https://stacks.cdc.gov/view/cdc/215053/cdc_215053_DS1.pdf
• File Type:
  [PDF - 1.74 MB ]