| Main Title |
Regeneration of chromated aluminum deoxidizers : improved diaphragm fabrication and performance / |
| Author |
Hicks, Harry C. ;
Sekits., Donald F.
|
| Other Authors |
|
| CORP Author |
Boeing Commercial Airplane Co., Seattle, Wash.;Industrial Environmental Research Lab., Cincinnati, Ohio. |
| Publisher |
United States Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory, |
| Year Published |
1977 |
| Report Number |
EPA/600/2-77/194; D6-22251-16; EPA-S-803064 |
| Stock Number |
PB-272 687 |
| OCLC Number |
05719616 |
| Subjects |
Metals--Deoxidizing ;
Chromium ;
Salvage (Waste, etc) ;
Water--Pollution ;
Chromium ;
Metals--Deoxidizing ;
Salvage (Waste, etc) ;
Water--Pollution ;
Deoxidizing of metals
|
| Additional Subjects |
Metal finishing ;
Water pollution control ;
Diaphragms(Engineering) ;
Regeneration(Engineering) ;
Fabrication ;
Aluminum ;
Chromium ;
Toxicity ;
Performance evaluation ;
Cost analysis ;
Reclamation ;
Chemical cleaning ;
Recirculation ;
Crystallization ;
Design criteria ;
Chromating ;
Electrolysis ;
Deoxidizers ;
Metal finishing industry ;
Water pollution control equipment
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-2-77-194 |
c.1 |
Headquarters Library/Washington,DC |
03/17/2014 |
| ELBD ARCHIVE |
EPA 600-2-77-194 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ESAD |
EPA 600-2-77-194 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-272 687 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
viii, 29 p. : ill. ; 31 cm. |
| Abstract |
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 hexavelent 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. In the second phase of this project diaphragm fabrication techniques were refined to produce an improved diaphragm in terms of cost and performance. In addition, electrolytic regeneration equipment installed in a large production tank for six months exceeded technical and economic objectives. |
| Notes |
Submitted in fulfillment of Phase II, grant no. S803064-01, between the United States Environmental Protection Agency and the Boeing Commercial Airplane Company. Project Officer: Hugh B. Durham. Includes bibliographical references (p. 27-28). |
| Place Published |
Cincinnati |
| Supplementary Notes |
See also report dated Dec 73, PB-231 835. |
| Corporate Au Added Ent |
Industrial Environmental Research Laboratory (Cincinnati, Ohio) |
| Corp Au Ser Add Ent |
United States. Environmental Protection Agency. Environmental protection technology series ; EPA-600/2-77-194 (Sept.) |
| PUB Date Free Form |
1977 |
| Series CORP Author |
United States Environmental Protection Agency. |
| Series Title Untraced |
United States. Environmental Protection Agency. Environmental protection technology series ; EPA-600/2-77-194 (Sept.) |
| NTIS Prices |
PC A03/MF A01 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20140314150248 |
| Language |
eng |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01908cam 2200397Ii 45020 |
