Record Display for the EPA National Library Catalog

RECORD NUMBER: 25 OF 83

OLS Field Name OLS Field Data
Main Title Determination of the Feasibility of Removal of Algal Nutrients in Lake Water by Ion Exchange.
Author Zajice, O. T. ;
CORP Author Massachusetts Univ., Amherst. Water Resources Research Center.
Year Published 1971
Report Number Pub-12; OWRR-A-018-MASS; 08669,; A-018-MASS(2)
Stock Number PB-199 914
Additional Subjects ( Phosphorous ; Lakes) ; ( Ion exchanging ; Phosphorous) ; ( Lakes ; Water treatment) ; Anion exchanging ; Separation ; Chlorides ; Sulfates ; Reservoirs ; Fresh water ; Phosphates ; Control ; Algae ; Nutrients ; Eutrophication ; Water pollution control ; Phosphate removal
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB-199 914 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 84p
Abstract
Excessive amounts of phosphorus, introduced by the activities of man, contribute to the accelerated eutrophication experienced in many of our natural waters. The feasibility was studied of using ion exchange techniques, perhaps in a new way, to effect a reduction in the phosphorus levels of natural waters. A study of the ion exchange characteristics of phosphate species in the presence of chloride as a competing ion was completed. A similar study using sulfate as the competing ion is nearing completion at the present time and is briefly discussed. Over the pH range of natural waters, the phosphate species undergoing exchange is HP04 2-. With chloride as the competing ion the electroselectivity principle applies; with sulfate a similar phenomenon occurs due to the base strength of the HP04 2- ion. Kinetic studies of the exchange process indicate that it is the HP04 ion concentration which is rate controlling and this ion migrates through the resin-solution interface. Ion exchange removal of phosphate from natural waters is feasible and should be investigated further with field studies. (WRSIC abstract)