Record Display for the EPA National Library Catalog


Main Title Chemical dehalogenation treatment: APEG treatment.
CORP Author Science Applications International Corp., Cincinnati, OH.;Environmental Protection Agency, Washington, DC. Office of Emergency and Remedial Response.
Publisher U.S. Environmental Protection Agency, Office of Emergency and Remedial Response ; Office of Research and Development,
Year Published 1990
Report Number EPA/540/2-90/015; EPA-68-C8-0062
Stock Number PB91-228031
OCLC Number 31884292
Subjects Hazardous wastes--Decontamination--United States ; Hazardous wastes--United States--Decontamination
Additional Subjects Waste treatment ; Dehalogenation ; Aromatic compounds ; Halogen organic compounds ; Technology utilization ; Revisions ; Reaction kinetics ; Chemical reactions ; Metal compounds ; Hydroxides ; Cost analysis ; Potassium hydroxides ; Chemical treatment ; Alkaline metal hydroxide/polyethylene glycol
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  EPA/540/2-90/015 Region 1 Library/Boston,MA 05/25/2016
EJBD ARCHIVE EPA 540-2-90-015 Headquarters Library/Washington,DC 06/30/2014
EJBD  EPA 540-2-90-015 Headquarters Library/Washington,DC 05/13/2015
ELBD  EPA 540-2-90-015 AWBERC Library/Cincinnati,OH 11/22/2010
EMBD  EPA/540/2-90/015 NRMRL/GWERD Library/Ada,OK 12/28/2001
NTIS  PB91-228031 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6 pages : illustrations ; 28 cm.
The chemical dehalogenation system discussed in the report is alkaline metal hydroxide/polyethylene glycol (APEG) which is applicable to aromatic halogenated compounds. The metal hydroxide that has been most widely used for this reagent preparation is potassium hydroxide (KOH) in conjunction with polyethylene glycol (PEG) (typically, average molecular weight of 400 Daltons) to form a polymeric alkoxide referred to as KPEG. However, sodium hydroxide has also been used in the past and most likely will find increasing use in the future because of patent applications that have been filed for modification to this technology. This new approach will expand the technology's applicability and efficacy and should reduce chemical costs by facilitating the use of less costly sodium hydroxide. A variation of this reagent is the use of potassium hydroxide or sodium hydroxide/tetraethylene glycol, referred to as ATEG, that is more effective on halogenated aliphatic compounds. In some KPEG reagent formulations, dimethyl sulfoxide (DMSO) is added to enhance reaction rate kinetics, presumably by improving rates of extraction of the haloaromatic contaminants. Previously developed dehalogenation reagents involved dispersion of metallic sodium in oil or the use of highly reactive organosodium compounds. The reactivity of metallic sodium and these other reagents with water presented a serious limitation to treating many waste matrices; therefore, these other reagents are not discussed in this bulletin and are not considered APEG processes.
Caption title. "September 1990." Includes bibliographical references (pages 5-6). "EPA/540/2-90/015."