Main Title |
New membranes for reverse osmosis treatment of metal finishing effluents / |
Author |
Rozelle, L. T.
|
Other Authors |
|
CORP Author |
North Star Research Inst., Minneapolis, Minn.;National Environmental Research Center, Grosse Ile, Mich. Grosse Ile Lab.;Minnesota Pollution Control Agency, Minneapolis. |
Publisher |
Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Superintendent of Documents, U.S. Government Printing Office |
Year Published |
1973 |
Report Number |
EPA-660/2-73-033; EPA-12010-DRH |
Stock Number |
PB-240 722 |
OCLC Number |
01865163 |
Subjects |
Water--Purification--Reverse osmosis process ;
Electroplating--Waste disposal
|
Additional Subjects |
Membranes ;
Industrial waste treatment ;
Water pollution control ;
Metal finishing ;
Electroplating ;
Cyanides ;
Copper ;
Fabrication ;
pH ;
Flux(Rate) ;
Performance evaluation ;
Reverse osmosis ;
Polysulfones ;
Polyethylenimine ;
Tubular membranes ;
Spiral wound membranes
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 660-2-73-033 |
c.1 |
Headquarters Library/Washington,DC |
01/24/2014 |
ELBD ARCHIVE |
EPA 660-2-73-033 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD RPS |
EPA 660-2-73-033 |
repository copy |
AWBERC Library/Cincinnati,OH |
10/19/2015 |
NTIS |
PB-240 722 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
vii, 66 pages : illustrations ; 27 cm. |
Abstract |
An important new membrane has been developed for the reverse osmosis treatment of both highly alkaline and acidic (non-oxidizing) metal finishing rinse waters. This membrane designated NS-1, and originally developed for seawater desalination, consists of the following: a microporous support film (polysulfone) coated with polyethylenimine which is cross-linked with tolylene 2,4-diisocyanate. Simulated alkaline copper and zinc cyanide plating rinses at pH's of 11.8 and 12.9 were treated by NS-1 membranes during 500- and 340-hour tests without deterioration of reverse osmosis properties. Water fluxes above 10 gallons per square foot (of membrane) per day (gfd) were observed with cyanide rejections between 95 and 99 percent. The NS-1 membrane also treated simulated copper sulfate rinse waters effectively at pH 0.5 during 550-hour tests without deterioration of reverse osmosis properties (fluxes above 10 gfd with 99.8 percent rejection of copper). Preliminary engineering considerations indicated the feasibility of applying the NS-1 membrane to reverse osmosis treatment and recycle of nickel and zinc cyanide electroplating rinse waters. |
Notes |
"December 1973." "Project officer, Dr. Hugh B. Durham." U.S. G.P.O. sales statement incorrect in publication. Includes bibliographical references (page 61). Prepared for Office of Research and Development, U.S. Environmental Protection Agency |