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Main Title An ion-exchange process for recovery of chromate from pigment manufacturing /
Author Robinson, Donald J. ; Weisberg, Harold E. ; Chase, Glenn I. ; Libby, Jr., Kenneth R. ; Capper., James L.
Other Authors
Author Title of a Work
Robinson, Donald J.
CORP Author Mineral Pigments Corp., Beltsville, Md.
Publisher Environmental Protection Agency, Office of Research and Development, National Environmental Research Center,
Year Published 1974
Report Number EPA-670/2-74-044; EPA-ROAP-21AZQ-03; EPA-12020-ERM
Stock Number 45268
OCLC Number 02903506
ISBN pbk.
Subjects Ion exchange resins ; Pigments ; Chromium ; Factory and trade waste ; Adsorption
Additional Subjects Industrial waste treatment ; Water pollution control ; Ion exchanging ; Chromates ; Pigments ; Pilot plants ; Performance evaluation ; Chromium inorganic compounds ; Zinc inorganic compounds
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 670-2-74-044 c.1 Headquarters Library/Washington,DC 05/17/2013
ELBD ARCHIVE EPA 670-2-74-044 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 670-2-74-044 repository copy AWBERC Library/Cincinnati,OH 08/19/2019
NTIS  PB-233 641 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 92 pages : illustrations, graphs ; 27 cm.
Strongly basic ion-exchange resins have been shown to exhibit a preference for dichromate over many other anions in water solution. Laboratory studies were conducted to show that this ion preference could be used to remove chromate from waste waters which were discharged from a zinc yellow pigment manufacturing plant. It was also shown that the recovered chromate solution could be recycled into product manufacture without sacrificing product quality. From these laboratory studies, a full-scale ion-exchange treatment plant was designed, constructed, and demonstrated. The chromate composition of the plant effluent is being reduced from 2700 ppm to one to two ppm. The treatment system was designed to treat 60 gallons per minute of influent and to discharge an effluent which is within statutory limits for pH and for heavy metal content. The plant was designed to require minimal manual supervision. The steps in treatment and in resin regeneration are performed automatically and the control system is interlocked to make it fail safe.
Prepared by Mineral Pigments Corporation, Beltsville, Md., under project 12020 ERM, program element 1BB036. Includes appendices. Includes bibliographical references (pages 53-54).