Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Closed loop system for the treatment of water pickle liquor /
Author Peterson, Joseph C.
CORP Author Crown Chemical Co., Inc., Indianapolis, Ind.;Industrial Environmental Research Lab., Research Triangle Park, N.C.
Publisher Environmental Protection Agency, Office of Energy, Minerals, and Industry, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1977
Report Number EPA/600/2-77/127; EPA-S-803358
Stock Number PB-270 090
OCLC Number 03741149
ISBN pbk.
Subjects Metal cleaning. ; Iron industry and trade. ; Steel industry and trade. ; Iron industry and trade. ; Metal cleaning. ; Steel industry and trade.
Additional Subjects Feedback control ; Water pollution control ; Metal industry ; Ion exchanging ; Hydrolysis ; Iron sulfate ; Feasibility ; Process charting ; Performance evaluation ; Design criteria ; Recirculation ; Industrial wastes ; Materials recovery ; Iron oxides ; Cost analysis ; Capitalized costs ; Operating costs ; Sulfuric acid ; Pickle liquor
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-2-77-127 Headquarters Library/Washington,DC 03/10/2014
EKBD  EPA-600/2-77-127 Research Triangle Park Library/RTP, NC 06/20/2003
ESAD  EPA 600-2-77-127 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-270 090 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation vi, 55 p. : ill. ; 28 cm.
The report gives results of a demonstration of the feasibility of converting ferrous sulfate (FeSO4.7H2O)--obtained by low-temperature crystallization from H2SO4 waste pickle liquor generated by the acid-cleaning of steel surfaces--to marketable ferric oxide (Fe2O3). A closed-loop system is proposed, consisting of a crystallizer, ion exchange unit, oxidizer, and hydrolyzer. All acids are recycled, and the net effect is that FeSO4.7H2O is consumed and Fe2O3 is produced. The FeSO4.7H2O solution was contacted with hydrogen ion exchange resin in a continuous ion exchange unit. Removal of ferrous ion was 90%. About 11-15% by weight H2SO4 was generated for recycle to pickling. The resin was regenerated with 4M HNO3, and a ferrous-ferric nitrate solution was produced. This product was heated to 180C and contacted with air to get complete oxidation to the ferric state and to oxidize any byproduct NO2 to HNO3. The nitrate solution was then hydrolyzed to Fe2O3 and HNO3 in a continuous coil autoclave at 205C. The HNO3 was about 20% by weight and can be recycled to the ion exchange unit. After drying, the Fe2O3 was about 99% pure. A preliminary market survey indicates the product may have a value of $0.10-$0.80 per kilogram.
Prepared under grant no. S803358, program element no. 1BV610. Issued July 1977. Includes bibliographical references.