Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Optimization of ammonia removal by ion exchange using clinoptilolite /
Author Koon, John H.
Other Authors
Author Title of a Work
Kaufman, Warren J.,
Koon, John H.
CORP Author University of California, Berkeley. Sanitary Engineering Research Laboratory.
Publisher U.S. Government Printing Office,
Year Published 1972
Report Number W7213254; EPA17080-DAR-09 /71; EPA 620-R-71-007
OCLC Number 00402904
Subjects Sewage--Purification--ion exchange process. ; Clinoptilolite. ; Ammonia.
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 620-R-71-007 Headquarters Library/Washington,DC 04/11/2011
EJBD  EPA 620-R-71-007 Headquarters Library/Washington,DC 02/10/2014
EKAD  17080DAR09/71 Region 4 Library/Atlanta,GA 08/30/2002
EKAD  TD757.5.C35 Region 4 Library/Atlanta,GA 08/30/2002
ELBD  EPA 17080-DAR-09-71 AWBERC Library/Cincinnati,OH 11/04/2011
Collation ix, 189 pages : illustrations ; 28 cm.
"17080 DAR 09/71." "Prepared for the Environmental Protection Agency." Includes bibliographical references (pages 139-146).
Contents Notes
The zeolite ion exchanger clinoptilolite was investigated with the objective of optimizing its application to ammonia removal from wastewaters. The study included multiple cycle pilot plant operations at three municipal sewage treatment plants. Particular attention was given to cation interference with exhaustion performance and with minimum cost regeneration. The ammonia capacity of clinoptilolite was found to be nearly constant over the pH range of 4 to 8, but diminished rapidly outside this range. In regeneration the pH was critical in determining the NaCl requirements, a higher pH favoring lesser amounts of salt. However, at a pH over 12.5 zeolite attrition became excessive and exchanger makeup contributed significantly to operating costs. An average ammonia removal of 95.7% was obtained in demonstration studies on three municipal wastes have an NHb3sN content of about 20 mg/Á. The cost of ammonia removal using clinoptilolite for a 10-mgd plant operating under these conditions was estimated to be $0.082/1000 gal. Ammonia removal down to less than 0.5 mg/Á NHb3-sN is technically feasible, but only with shorter exhaustion runs and greater regenerant requirements.