Record Display for the EPA National Library Catalog

RECORD NUMBER: 205 OF 2069

Main Title Basic Salinogen Ion-Exchange Resins for Selective Nitrate Removal from Potable and Effluent Waters.
Author Walit, A. L. ; Jone, H. L. ;
CORP Author Tyco Labs., Inc., Waltham, Mass.
Year Published 1969
Report Number FWQA-14-12-439; FWQA-17010-FKF; 03455,; 17010-FKF-12/69
Stock Number PB-196 735
Additional Subjects ( Water pollution ; Nitrates) ; ( Ion exchanging ; Nitrates) ; ( Sewage treatment ; Nitrates) ; ( Water treatment ; Nitrates) ; ( Ion exchange resins ; Synthesis(Chemistry)) ; ( Chemical removal(Water treatment) ; Nitrates) ; Polystyrene ; Potable water ; Amines ; Naphthalene compounds ; Nutrients ; Materials recovery ; Chlorides ; Waste water treatment ; Poly(ethylene/((((naphthylmethyl)amino)methyl)phenyl)) ; Water pollution control
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB-196 735 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 95p
Abstract
Preparation of nitrate-specific ion-exchange resins, which incorporate selected primary amines grafted onto polystyrene, has been investigated. The best selectivity for nitrate ion over chloride ion was obtained with the 1-naphthylmethlaminomethyl derivative of polystyrene (1-NMA resin). Nitrate was adsorbed quantitatively from feed solutions containing five times as much chloride ion as nitrate ion. Under identical conditions, commercial weak-base resins removed only 70% of the nitrate ion. The 1-NMA resin could be regenerated repeatedly in the chloride form by HCl, but attempts at alkaline regeneration led to irreproducible results. Recommendations for future work include investigation of the effects of crosslinking, addition of hydrophilic functional groups, quaternization of the amine, and incorporation of different, nitrate-selective, functional groups. (Author)