Record Display for the EPA National Library Catalog


Main Title Ethylene oxide control technology development for hospital sterilizers /
Author Meiners, Alfred F.
CORP Author Midwest Research Inst., Kansas City, MO.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher Air and Energy Engineering Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1988
Report Number EPA/600/2-88/028; MRI-8691-L; MRI-8692-K; EPA-68-02-3999
Stock Number PB88-211792
Subjects Sterilization--methods ; Ethylene Oxide ; Air Pollution--prevention & control
Additional Subjects Air pollution control equipment ; Ethylene oxide ; Medical equipment ; Hospitals ; Stationary sources ; Hospital sterilizers ; Chlorofluorocarbon ; Catalytic oxidation ; Acid hydrolysis ; CAS 75-21-8
Library Call Number Additional Info Location Last
NTIS  PB88-211792 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 155 pages : illustrations ; 27 cm.
The report discusses the development of ethylene oxide (EO) control technology for hospital sterilizers. Hospitals sterilize heat-sensitive items in gas sterilizers that use a mixture of EO (12 wt %) and a chlorofluorocarbon (CFC) (88 wt %). The active sterilizing agent is EO. The CFC is added as a flameproofing diluent. Two potential sterilizer emission control systems were tested: catalytic oxidation and acid hydrolysis. In catalytic oxidation, relatively dilute mixtures of air and EO (12/88) are passed through a catalyst bed at 149-177 C. In acid hydrolysis, EO is hydrolyzed to ethylene glycol using H2SO4 (the CFC is unaffected). A full-scale system was tested under laboratory conditions, simulating a system that could be used for hospital sterilizers. The tests showed that the EO destruction efficiency was 99.9-99.999% of the EO reaching the device. However, 45-60% of the EO was absorbed by the ethylene glycol used in the closed-circuit liquid-ring vacuum pump. Each system has significant advantages and limitations.
"May 1988." Includes bibliographical references. "EPA contract no. 68-02-3999." "PB88-211792." Microfiche.