Record Display for the EPA National Library Catalog


Main Title Weak-Acid Ion Exchange for Removing Barium, Radium, and Hardness.
Author Snyder, D. W. ; Snoeyink, V. L. ; Pfeffer, J. L. ;
CORP Author Illinois Univ., Urbana.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1986
Report Number EPA-R-808912; EPA/600/J-86/204;
Stock Number PB87-170452
Additional Subjects Ground water ; Ion exchange resins ; Ion exchanging ; Water pollution control ; Barium ; Radium ; Acids ; Swelling ; Removal ; pH ; Carbonates ; Reprints ; Drinking water
Library Call Number Additional Info Location Last
NTIS  PB87-170452 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
Weak-acid resin in the hydrogen form was found to effectively remove barium, radium, and hardness, without increasing the sodium content of the product water. The maximum capacity of the weak-acid resin was about 2.3 times that of strong-acid resin, and much less spent regenerant per unit volume of water treated was produced from a weak-acid column than from a strong-acid column. There are, however, some disadvantages to weak-acid ion exchange: swelling of the resin during exhaustion; the need to use acid-resistant materials; the inability to remove noncarbonate hardness; the necessity of stripping carbon dioxide from the product water and adjusting the pH; and the probable higher cost.