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RECORD NUMBER: 125 OF 437

OLS Field Name OLS Field Data
Main Title Effects of Bentonite Clay Solids on Poliovirus Concentration from Water by Microporous Filter Methods.
Author Sobsey, M. D. ; Cromeans, T. ;
CORP Author North Carolina Univ. at Chapel Hill. School of Public Health.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1985
Report Number EPA-R-806677; EPA/600/J-85/047;
Stock Number PB85-214344
Additional Subjects Filters ; Polioviruses ; Activated carbon treatment ; Water supply ; Fly ash ; Bentonite ; Solids ; Retaining ; Adsorption ; Turbidity ; Reprints ; Microporous filters
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB85-214344 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 5p
Abstract
In order to determine if suspended solids interfere with enteric virus recovery from water by microporous filter methods, the effects of bentonite clay solids at a concentration of 10 NTU on the recovery of poliovirus type 1 from seeded, activated carbon-treated, filtered tap water were studied. Five hundred-ml volumes of virus-laden water at pH 5.5 or 7.5, with and without 50 mM MgCl2, were filtered through 47 mm diameter, electropositive (Virosorb 1MDS) and electronegative (Filterite) filters that had been pretreated with Tween 80 to minimize direct virus adsorption to filter surfaces. Bentonite solids enhanced virus retention on both types of filters, even under conditions where viruses were not solids-associated. However, bentonite solids also interfered with elution of retained viruses when eluting with 0.3% beef extract-50 mM glycine, pH 9.5. (Copyright (c) 1985, American Society for Microbiology.)