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Main Title Removal and recovery of fluoborates and metal ions from electroplating wastewater /
Author Liskowitz, J. W. ; Cagnati, V. N. ; Hunter, T. ; Haralson, R.
Other Authors
Author Title of a Work
Liskowitz, John W.
Stinson, Mary K.
Cagnati, Vincent N.
Hunter, Terrance.
Haralson, Ray.
CORP Author New Jersey Inst. of Tech., Newark.;Environmental Protection Agency, Cincinnati, OH. Hazardous Waste Engineering Research Lab.
Publisher Hazardous Waste Engineering Research Laboratory, U.S. Environmental Protection Agency ; Reproduced by National Technical Information Service,
Year Published 1985
Report Number EPA/600/2-85/054; EPA-R-804710; PB85200038
Stock Number PB85-200038
OCLC Number 26051853
Subjects Electroplating ; Electrodialysis ; Fluoborates
Additional Subjects Water pollution control ; Electroplating ; materials recovery ; Electrodialysis ; Flotation ; Metal finishing ; Electrolysis ; Surfactants ; Fluoborates ; Waste utilization ; Waste recycling ; Ion selective electrodes ; Ultrafiltration
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-2-85-054 Headquarters Library/Washington,DC 11/25/2013
NTIS  PB85-200038 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 79 pages : illustrations, charts, plans ; 28 cm
Two separate methods for the treatment of fluoborate wastewater from the electroplating of tin, solder, copper and nickel stripping were investigated. These involved specific ion flotation and electrodialysis to treat dilute waste streams from single tank rinsing or concentrated wastewaters from counter-current or series rinsing, respectively. The fluoborate ion was found to bind with an alkylamine acetate by displacement of the acetate group and can be removed from dilute waste stream either by air flotation or ultrafiltration. Ultrafiltration provided greater rates of removal than air flotation. The surfactant can be recovered for reuse by electrolysis. A new high density low porosity graphite anode that is resistant to the corrosive properties of fluoboric acid electrolyte was developed for electrodialysis treatment of the tin, solder and copper fluoborate containing wastewaters. Fluoboric acid electrolyte was used to prevent contamination of the products with sulfate ion. Recoveries of the metal ions were in excess of 90 percent with the stannous ion being preferentially concentrated in the product and with the stannic ion remaining preferentially in the feed. In general, recoveries of the fluoborate ions were in excess of 80 percent.
"EPA/600/2-85/054." "May 1985." "New Jersey Institute of Technology." "Grant No. R 804710." "Project Officer Mary K. Stinson." "Organic and Inorganic Chemicals and Products Branch, Hazardous Waste Engineering Research Laboratory." Includes bibliographical references (pages 78-79).