Record Display for the EPA National Library Catalog

RECORD NUMBER: 38 OF 101

OLS Field Name OLS Field Data
Main Title PBI reverse osmosis membrane for chromuim plating rinse water /
Author Davis, Howard J. ; Model, Frank S. ; Leal., Joseph R.
Other Authors
Author Title of a Work
Model, Frank S.,
Leal, Joseph R.,
CORP Author American Electroplaters' Society, Inc., Winter Park, Fla. ;Celanese Research Co., Summit, N.J.;Industrial Environmental Research Lab.-Cincinnati, Ohio.
Publisher Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1978
Report Number EPA 600-2-78-040; EPA-R-803620
Stock Number 22161
OCLC Number 04044542
ISBN pbk.
Subjects Chromium-plating. ; Polymerization. ; Polymers. ; Osmosis.
Additional Subjects Electroplating ; Water pollution control ; Chromium ; Metal finishing ; Design criteria ; Performance evaluation ; Benzimidazoles ; Physical properties ; Tests ; Reverse osmosis membranes ; Polybenzimidazoles ; Closed cycle systems
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=91017FFA.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 600-2-78-040 Headquarters Library/Washington,DC 11/28/2012
EJBD  EPA 600-2-78-040 c.1 Headquarters Library/Washington,DC 04/22/2014
EKAM  EPA-600/2-78-040 Region 4 Library/Atlanta,GA 09/25/1998
ESAD  EPA 600-2-78-040 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-280 944 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation vii, 28 p. : ill. ; 28 cm.
Abstract
A laboratory research study was carried out to select and optimize polybenzimidazole (PBI) reverse osmosis (RO) membranes for the treatment of chromium plating rinse water. The effects of important film casting and annealing variables on RO properties were investigated. Membranes were tested in high pressure flow cells with dilute sodium chloride and chromic acid feed solutions. PBI RO membranes were found to be resistant to attack by chromic acid. After pretesting with sodium chloride, the membranes showed a short-term effective level of rejection with chromic acid. Upon retesting with sodium chloride, the same membranes again exhibited high salt rejections, thereby demonstrating they had not been chemically attacked by chromic acid. A significant improvement in long-term rejection of chromic acid was obtained when the membranes were pretreated with sodium tungstate solution. The addition of sodium tungstate to the feed solution further improved chromic acid rejection. Highest levels of chromic acid rejection were obtained by adjusting the pH of the feed. However, neither pH adjustment nor addition of tungstate to the feed are acceptable in practice because of possible contamination of the plating bath by the extraneous ions. The project failed to develop an acceptable PBI RO membrane for treating chromium plating rinse water.
Notes
Prepared under Grant no. R-803620. Issued Mar. 1978. Includes bibliographical references.