Title

Soc Removal In A Membrane Softening Process

Authors

S J. Duranceau

Title - Alternative

IEEE Trans. Antennas Propag.

Keywords

CELLULOSE-ACETATE MEMBRANES; REVERSE OSMOSIS SEPARATION; PHYSICOCHEMICAL; CRITERIA; PHENOLS; Engineering, Civil; Water Resources

Abstract

The authors investigated the rejection of six synthetic organic chemicals (SOCs) in a potable water source by a nanofiltration membrane softening process. Each SOC was studied separately for one month-which was subdivided into four recovery periods. The four largest-molecular-weight compounds (chlordane, heptachlor, methoxychlor, and alachlor) were completely rejected by the membrane. Ethylene dibromide, the lowest-molecular-weight compound studied, was not rejected by the membrane, whereas dibromochloropropane was partially rejected. Mass balances indicated that SOC recovery decreased as SOC molecular weight (MW) increased, which suggested that the three largest-MW SOCs had been adsorbed by the membrane. The percentage of SOC rejection increased as MW increased, and the rejection of inorganic solutes increased as MW and species charge increased. No effect on solute mass transfer of any solutes resulted from membrane feed-stream velocities, which were estimated to vary from 0.19 to 0.52 fps.

Publication Title

Ieee Transactions on Antennas and Propagation

Volume

40

Issue/Number

1

Publication Date

1-1-1992

Document Type

Article

Language

English

First Page

68

Last Page

78

WOS Identifier

WOS:A1992JX02600009

ISSN

0003-150X

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