Evaluation of microporous carbon filters as catalysts for ozone decomposition
Abstract
Ozone is produced in small quantities in photocopiers and laser printers in the workplace and large quantities in industrial waste water treatment facilities. Carbon filters are commonly used to decompose this unwanted ozone. The three most important factors in producing a filter for this purpose are flow properties, efficiency, and cost. Most ozone decomposition applications require very low back-pressure at modest flow rates. The tradeoff between the number of pores and the size of the pores will be discussed. Typical unfiltered emissions in the workplace are approximately 1 ppm. The maximum permissible exposure limit, PEL, for worker exposure to ozone is 0.1 ppm over 8 hours. Several methods have been examined to increase the efficiency of ozone decomposition. Carbon surfaces were modified with catalysts, the surface activated, and the surface area was increased, in attempts to decompose ozone more effectively. Methods to reduce both the processing and raw material costs were investigated. Several sources of microporous carbon were investigated as ozone decomposition catalysts. Cheaper processing routes including macropore templating, faster drying and extracting methods were also studied.
- Authors:
-
- Sandia National Labs., Livermore, CA (United States)
- Sandia National Labs., Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 28276
- Report Number(s):
- SAND-95-8451C; CONF-941144-73
ON: DE95006498; TRN: AHC29510%%81
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Conference
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; OZONE; DECOMPOSITION; FILTERS; EFFICIENCY; POLLUTION CONTROL EQUIPMENT; PERFORMANCE; INDOOR AIR POLLUTION; INDUSTRIAL WASTES; AIR POLLUTION CONTROL
Citation Formats
Whinnery, L, Coutts, D, Shen, C, Adams, R, Quintana, C, and Showalter, S. Evaluation of microporous carbon filters as catalysts for ozone decomposition. United States: N. p., 1994.
Web.
Whinnery, L, Coutts, D, Shen, C, Adams, R, Quintana, C, & Showalter, S. Evaluation of microporous carbon filters as catalysts for ozone decomposition. United States.
Whinnery, L, Coutts, D, Shen, C, Adams, R, Quintana, C, and Showalter, S. 1994.
"Evaluation of microporous carbon filters as catalysts for ozone decomposition". United States. https://www.osti.gov/servlets/purl/28276.
@article{osti_28276,
title = {Evaluation of microporous carbon filters as catalysts for ozone decomposition},
author = {Whinnery, L and Coutts, D and Shen, C and Adams, R and Quintana, C and Showalter, S},
abstractNote = {Ozone is produced in small quantities in photocopiers and laser printers in the workplace and large quantities in industrial waste water treatment facilities. Carbon filters are commonly used to decompose this unwanted ozone. The three most important factors in producing a filter for this purpose are flow properties, efficiency, and cost. Most ozone decomposition applications require very low back-pressure at modest flow rates. The tradeoff between the number of pores and the size of the pores will be discussed. Typical unfiltered emissions in the workplace are approximately 1 ppm. The maximum permissible exposure limit, PEL, for worker exposure to ozone is 0.1 ppm over 8 hours. Several methods have been examined to increase the efficiency of ozone decomposition. Carbon surfaces were modified with catalysts, the surface activated, and the surface area was increased, in attempts to decompose ozone more effectively. Methods to reduce both the processing and raw material costs were investigated. Several sources of microporous carbon were investigated as ozone decomposition catalysts. Cheaper processing routes including macropore templating, faster drying and extracting methods were also studied.},
doi = {},
url = {https://www.osti.gov/biblio/28276},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 1994},
month = {Sat Dec 31 00:00:00 EST 1994}
}