Nitric acid vapor removal by activated, impregnated carbons
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.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 465896
- Report Number(s):
- LA-UR-97-445; CONF-961191-3; ON: DE97005159; TRN: 97:002781
- Resource Relation:
- Conference: 1996 Edgewood Research, Development and Engineering Center (RDEC) scientific conference on obscuration and aerosol research, Aberdeen, MD (United States), 19-22 Nov 1996; Other Information: PBD: 1996
- Country of Publication:
- United States
- Language:
- English
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