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Main Title Regeneration of Caustic Soda Etch Solutions for Aluminum.
Author Brown, C. J. ;
CORP Author Environmental Protection Agency, Washington, DC.
Publisher Jun 82
Year Published 1982
Stock Number PB95-251062
Additional Subjects Materials recovery ; Aluminum hydroxides ; Precipitation ; Chemical etching ; Reprints ; Alkalies ; Centrifuging ; Concentration(Composition) ; Solutions ; Byproducts ; Recycling ; SIC 3479 ; Solution regeneration
Library Call Number Additional Info Location Last
NTIS  PB95-251062 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
Abstract The process utilizes precipitation and centrifugation to remove Al(OH)3 from caustic aluminum solutions. When etching aluminum in a solution of caustic soda prior to anodizing, sodium aluminate (NaAl02) increases in concentration in the caustic until a rock-like precipitate of Al(OH)3 drops out of solution. By precipitating Al(OH)3 in a separate crystallization tank without the use of sequestering agents, one obtains a potentially salable byproduct (Al(OH)3) and reduces caustic consumption by recycling recovered caustic.
Supplementary Notes Pub. in Plating and Surface Finishing, p102-105 Jun 82.
NTIS Title Notes Journal article.
Title Annotations Reprint: Regeneration of Caustic Soda Etch Solutions for Aluminum.
Category Codes 68; 71N
NTIS Prices PC A02/MF A01
Primary Description 100/00
Document Type NT
Cataloging Source NTIS/MT
Control Number 530501220
Origin NTIS
Type CAT