Record Display for the EPA National Library Catalog
RECORD NUMBER: 18 OF 26
|OLS Field Name||OLS Field Data|
|Main Title||Isolation or concentration of organic substances from water : an evaluation of reverse osmosis concentration /|
|Author||Lynch, S. C. ; Smith, J. K. ; Rando, L. C. ; Yauger, W. L.|
|CORP Author||Gulf South Research Inst., New Orleans, LA.;Health Effects Research Lab., Research Triangle Park, NC.|
|Publisher||U.S. Environmental Protection Agency,|
|Report Number||EPA/600/1-84/018; EPA-68-03-2999|
|Subjects||Water--Purification--Membrane filtration. ; Water--Pollution--United States. ; Organic water pollutants--United States.|
|Additional Subjects||Water treatment ; Organic compounds ; Potable water ; Separation ; Membranes ; Cellulose acetate ; Dialysis ; Reverse osmosis ; FT-30 polymers|
|Collation||201 pages : illustrations ; 28 cm|
This study describes the development and evaluation of a reverse osmosis (RO)/Donnan dialysis system to be used in the preparation of drinking water concentrates for biological testing. Two reverse osmosis membranes, cellulose acetate (Osmonics, Inc.) and FT-30 (Film Tec, Inc.), were selected for laboratory evaluation, primarily because of their purported short-term chlorine resistance. Two Donnan membranes, Nafion (Dupont) and MA 3475 (IONAC), were chosen for further study based upon their chemical resistance characteristics (chlorine, caustic, and acid tolerance). The FT-30 membrane, a thin-film composite, demonstrated a substantially greater rejection efficiency for the model compounds than the cellulose acetate membrane. As expected from the rejection data, the recoveries of model solutes were much better for the FT-30 membrane system than the cellulose acetate system. Overall the recovery values (2-74%) were poor for the majority of model compounds in both RO systems and substantially less than anticipated based on the rejection data.
"November 1984." "Final report." "EPA/600-1-84/018." Microfiche.