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Title: Evaluations of membrane fouling potential in water treatment applications

Abstract

Membrane processes such as ultrafiltration, nanofiltration, and reverse osmosis are becoming increasingly popular in water treatment utilities because of their ability to produce high finished water quality. A major problem affecting the economics of these processes is permeate flux decline due to membrane fouling. The types of membrane fouling can be broadly categorized as follows: organic fouling, biofouling, colloidal fouling, inorganic fouling, and precipitation scaling. The membrane performance with respect to resistance to fouling as well as rejection characteristics is an important consideration. Selection of appropriate membranes for performance improvement in water treatment applications mandates the evaluation of the fouling potential, an aspect related to the membrane material, membrane type, nature of feed solution, and interactions between membranes and solutes. In the present study, the membrane fouling potential is evaluated by membrane performance tests with respect to permeate flux and solute rejections, and by membrane surface characterization techniques including measurements of membrane sorption, zeta potential, contact angles, and membrane surface morphology. These surface characterization techniques are intended to evaluate membrane sorption characteristics (with respect to foulants), membrane surface hydrophobicity, membrane surface charge under different solution conditions, and changes on membrane surface topography on the clean and fouled membranes.

Authors:
; ;
Publication Date:
Research Org.:
Univ. of Southern California, Los Angeles, SC (US)
OSTI Identifier:
20014795
Resource Type:
Conference
Resource Relation:
Conference: ASCE-CSCE 1999 National Conference on Environmental Engineering, Norfolk, VA (US), 07/25/1999--07/28/1999; Other Information: PBD: 1999; Related Information: In: Environmental engineering 1999, by Schafran, G.C. [ed.], 936 pages.
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; MEMBRANES; FOULING; WATER TREATMENT; SORPTIVE PROPERTIES; ULTRAFILTRATION; OSMOSIS; MATERIALS TESTING

Citation Formats

Tu, S C, Ravindran, V, and Pirbazari, M. Evaluations of membrane fouling potential in water treatment applications. United States: N. p., 1999. Web.
Tu, S C, Ravindran, V, & Pirbazari, M. Evaluations of membrane fouling potential in water treatment applications. United States.
Tu, S C, Ravindran, V, and Pirbazari, M. 1999. "Evaluations of membrane fouling potential in water treatment applications". United States.
@article{osti_20014795,
title = {Evaluations of membrane fouling potential in water treatment applications},
author = {Tu, S C and Ravindran, V and Pirbazari, M},
abstractNote = {Membrane processes such as ultrafiltration, nanofiltration, and reverse osmosis are becoming increasingly popular in water treatment utilities because of their ability to produce high finished water quality. A major problem affecting the economics of these processes is permeate flux decline due to membrane fouling. The types of membrane fouling can be broadly categorized as follows: organic fouling, biofouling, colloidal fouling, inorganic fouling, and precipitation scaling. The membrane performance with respect to resistance to fouling as well as rejection characteristics is an important consideration. Selection of appropriate membranes for performance improvement in water treatment applications mandates the evaluation of the fouling potential, an aspect related to the membrane material, membrane type, nature of feed solution, and interactions between membranes and solutes. In the present study, the membrane fouling potential is evaluated by membrane performance tests with respect to permeate flux and solute rejections, and by membrane surface characterization techniques including measurements of membrane sorption, zeta potential, contact angles, and membrane surface morphology. These surface characterization techniques are intended to evaluate membrane sorption characteristics (with respect to foulants), membrane surface hydrophobicity, membrane surface charge under different solution conditions, and changes on membrane surface topography on the clean and fouled membranes.},
doi = {},
url = {https://www.osti.gov/biblio/20014795}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jul 01 00:00:00 EDT 1999},
month = {Thu Jul 01 00:00:00 EDT 1999}
}

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