Record Display for the EPA National Library Catalog

RECORD NUMBER: 33 OF 34

OLS Field Name OLS Field Data
Main Title Zinc precipitation and recovery from viscose rayon waste water.
Author Roc, David M. ; Allma, Grady
Other Authors
Author Title of a Work
Rock, David M.
Allman, Grady.
CORP Author American Enka Company. Central Engineering Department.
Publisher [Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.,
Year Published 1971
Report Number EPA 950-R-71-043; 12090 ESG 01/71; EPA-WQO-12090-ESG; 02364,
Stock Number PB-205 205
OCLC Number 00257782
Subjects Textile waste. ; Rayon industry and trade. ; Zinc.
Additional Subjects ( Zinc sulfates ; Chemical removal(Water treatment)) ; ( Textile industry ; Industrial waste treatment) ; ( Industrial waste treatment ; Zinc sulfates) ; ( Materials recovery ; Zinc sulfates) ; Materials recovery ; Spinning(Staple fibers) ; Textile processes ; Precipitation(Chemistry) ; Pilot plants ; Neutralizing ; Sludge ; Cost estimates ; Operating costs ; Utilization ; Rayon ; Water pollution control ; Zinc hydroxides
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9100XCBS.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 950-R-71-043 Headquarters Library/Washington,DC 06/11/2013
EJBD  EPA 950-R-71-043 c.1-2 Headquarters Library/Washington,DC 05/30/2014
EKAD  12090 ESG 01/71 Region 4 Library/Atlanta,GA 08/16/2002 DISPERSAL
EKAD  TD899.T4A44 Region 4 Library/Atlanta,GA 08/16/2002 DISPERSAL
ELBD RPS EPA 950-R-71-043 repository copy AWBERC Library/Cincinnati,OH 10/16/2018
ELBD  EPA 12090-ESG-01-71 AWBERC Library/Cincinnati,OH 09/14/2011
NTIS  PB-205 205 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation viii, 86 pages illustrations 28 cm.
Abstract
A zinc recovery system was developed to recover zinc from dilute zinc sulfate lost both when acid spun yarns are washed and at various stages in the spinning process. The process included neutralization of the waste stream to pH 6.0, sedimentation of insolubles, crystallization of zinc hydroxide in a high pH environment, sedimentation of zinc hydroxide and solubilization of the zinc with sulfuric acid. A pilot plant was constructed and operated. It obtained 98-99% removal efficiency. The zinc hydroxide sludge was easily concentrated. Operating and maintenance costs were estimated. Recovery and sale of 2000 lbs of zinc daily assures recovery of these costs.
Notes
"12090ESG01/71." Includes bibliographical references.