Record Display for the EPA National Library CatalogRECORD NUMBER: 1 OF 3
|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,|
|Report Number||EPA/600/2-88/028; MRI-8691-L; MRI-8692-K; EPA-68-02-3999|
|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|
|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.