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1. (WO2017150885) METHODS OF ENHANCING WATER FLUX OF A TFC MEMBRANE USING OXIDIZING AND REDUCING AGENTS

Pub. No.:    WO/2017/150885    International Application No.:    PCT/KR2017/002197
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: B01D 69/12
C02F 1/44
Applicants: LG NANOH2O, INC.
LG CHEM, LTD.
Inventors: SONG, Keunwon
KO, Young Hoon
ROZENBAOUM, Evgueni
SHIN, Chongkyu
Title: METHODS OF ENHANCING WATER FLUX OF A TFC MEMBRANE USING OXIDIZING AND REDUCING AGENTS
Abstract:
Provided is a post-formation process for preparation of a highly permeable thin film composite membranes for reverse osmosis, particularly for use with brackish water at low energy conditions. The process includes contacting a polyamide discrimination layer of a TFC membrane with a solution containing an oxidizing agent to form a treated membrane, followed by contacting the treated membrane with a solution containing a reducing agent. The resulting membrane exhibits enhanced water flux while maintaining salt rejection. Also provided are reverse osmosis membranes prepared in accord with the method, and modules containing the highly permeable thin film composite membranes, and methods of purifying water using the membranes or modules.