Nitric acid vapor removal by activated, impregnated carbons

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Laboratory and industrial workers can be exposed to vapors of nitric acid, especially in accidents, such as spills. Nitric acid can also be a product of incineration for energy production or waste (e.g., CW agent) disposal. Activated carbons containing impregnants for enhancing vapor and gas removal have been tested for effectiveness in removing vapors of nitric acid from air. The nitric acid vapor was generated from concentrated acid solutions and detected by trapping in a water bubbler for pH measurements. Both low and moderate relative humidity conditions were used. All carbons were effective at vapor contact times representative of air-purifying ... continued below

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9 p.

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Wood, G.O. December 31, 1996.

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Description

Laboratory and industrial workers can be exposed to vapors of nitric acid, especially in accidents, such as spills. Nitric acid can also be a product of incineration for energy production or waste (e.g., CW agent) disposal. Activated carbons containing impregnants for enhancing vapor and gas removal have been tested for effectiveness in removing vapors of nitric acid from air. The nitric acid vapor was generated from concentrated acid solutions and detected by trapping in a water bubbler for pH measurements. Both low and moderate relative humidity conditions were used. All carbons were effective at vapor contact times representative of air-purifying respirator use. One surprising observation was the desorption of low levels of ammonia from impregnated carbons. This was apparently due to residual ammonia from the impregnation processes.

Physical Description

9 p.

Notes

OSTI as DE97005159

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  • 1996 Edgewood Research, Development and Engineering Center (RDEC) scientific conference on obscuration and aerosol research, Aberdeen, MD (United States), 19-22 Nov 1996

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  • Other: DE97005159
  • Report No.: LA-UR--97-445
  • Report No.: CONF-961191--3
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 465896
  • Archival Resource Key: ark:/67531/metadc675204

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • May 20, 2016, 1:35 p.m.

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Wood, G.O. Nitric acid vapor removal by activated, impregnated carbons, article, December 31, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc675204/: accessed December 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.