Record Display for the EPA National Library Catalog

RECORD NUMBER: 17 OF 133

OLS Field Name OLS Field Data
Main Title Cationic Polymers as Flocculant Aide in Water Purification.
Author Linfor, H. ; Fyf, R. ; Hilbor, W. ; Lausangnga, S. ;
CORP Author Columbia Univ., New York. Dept. of Chemical Engineering.
Year Published 1968
Report Number PHS-WP00240-06;
Stock Number PB-214 990
Additional Subjects ( Water treatment ; Flocculating) ; ( Silicon dioxide ; Flocculants) ; ( Zeta potential ; Flocculating) ; Inorganic polymers ;
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-214 990 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 122p
Abstract
According to some investigators, the flocculation mechanism is based on action of chemical bonding forces. Little emphasis has been placed on the possibility that the flocculant might alter the make-up of the double layer thereby reducing electrostatic repulsive forces between particles and flocs. Behavior of the calculated electrokinetic or 'Zeta' potential reflects change in the stability of a suspension. Flocculation behavior can therefore be correlated with a Zeta potential. One means of estimating the Zeta potential is from microelectrophoresis measurements. The report shows that, by measuring the floc bed depth and total electrical resistance of the streaming potential cell, as well as the streaming potential and its corresponding pressure difference driving force, a control factor, valid over the potable water range, can be calculated for each flocculation system investigated. (Author)