Record Display for the EPA National Library Catalog


Main Title Regeneration of chromated aluminum deoxidizers; phase I report /
Author Hicks, Harry C., ; Jarmuth., Robert A.
Other Authors
Author Title of a Work
Jarmuth, Robert A.,
CORP Author Boeing Commercial Airplane Co., Seattle, Wash.
Publisher Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Year Published 1973
Report Number EPA-660/2-73-023; EPA-12070-HEK; W74-07254
Stock Number PB-231 835
OCLC Number 00991618
Subjects Metals--Deoxidizing ; Chromium ; Salvage (Waste, etc) ; Water--Pollution
Additional Subjects Deoxidizers ; Regneration(Engineering) ; Chromates ; Diaphragms(Mechanics) ; Membranes ; Electrolysis ; Chromium inorganic compounds ; Aluminum industry ; Purification ; Crystallization ; Filtration ; Oxidation ; Metal finishing ; Trace elements ; Pilot plants ; Cost estimates ; Economic analysis ; Industrial waste treatment ; Water pollution abatement ; Waste recycling
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 660-2-73-023 Headquarters Library/Washington,DC 03/30/2009
EJBD  EPA 660-2-73-023 c.1 Headquarters Library/Washington,DC 05/07/2013
ELBD RPS EPA 660-2-73-023 repository copy AWBERC Library/Cincinnati,OH 02/18/2015
NTIS  PB-231 835 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vi, 160 pages : illustrations ; 27 cm.
In the metal finishing industry highly concentrated hexavalent chromium solutions are used extensively to deoxidize aluminum surfaces prior to anodizing, conversion coatings, prepaint preparation, welding and adhesive bonding. A regeneration process was conceived and tested to reduce the frequency of discarding the spent chromated deoxidizers. The engineering techniques developed in this project involve reoxidation of trivalent chromium to the hexavalent state by electrolysis thru a diaphragm plus removal of undesirable dissolved metals by crystallization and separation. Results of the accomplished work establish that regeneration of chromated aluminum deoxidizers is feasible, practical and economical.
Report prepared by The Boeing Commercial Airplane Company, Seattle, Washington. Prepared for Office of Research and Development, Environmental Protection Agency under project 12070 HEK, program element 1B2036. Includes bibliographical references (pages 87-88).