Assessment of various membrane fouling indexes under seawater conditions

Keewoong Hong; Sangyoup Lee; Soohoon Choi; Youngbeom Yu; Seungkwan Hong; Jihee Moon; Jinsik Sohn; Jeongseok Yang

doi:10.1016/j.desal.2008.12.029

Assessment of various membrane fouling indexes under seawater conditions

Keewoong Hong
, Sangyoup Lee
, Soohoon Choi
, Youngbeom Yu
, Seungkwan Hong^*
, Jihee Moon
, Jinsik Sohn
, Jeongseok Yang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

In this study, various foulants are tested with the conventional fouling indexes such as silt density index (SDI) and modified fouling index (MFI) under high TDS conditions to evaluate the practical appliance of these indexes for RO desalination. A new approach for developing a more realistic fouling index is investigated based on flow field-flow fraction (Fl-FFF) analysis. The results showed that the SDI and MFI for the feed waters containing the particulate foulants larger than the pore size of the membranes used in SDI and MFI measurements were not significantly affected by the feed water salinity. This is due to the fact that the main fouling mechanism is the deposition of particles on the membrane surface and, hence, the cake filtration controls the permeate flux. In case of the particles as well as organics smaller than the pore size of the membranes, the SDI and MFI failed to accurately predict the fouling potential of feed waters with high salinity. In addition, the characteristics of membrane (i.e., hydrophobicity) also played an important role in determining membrane performance. Based on the results from Fl-FFF analyses, it was demonstrated that both qualitative and quantitative assessments of fouling potential of feed waters with different foulants and TDS conditions were possible.

Original language	English
Pages (from-to)	247-259
Number of pages	13
Journal	Desalination
Volume	247
Issue number	1-3
DOIs	https://doi.org/10.1016/j.desal.2008.12.029
Publication status	Published - 2009 Oct

Bibliographical note

Funding Information:
The authors would like to thank the Ministry of Land, Transport and Maritime Affairs (MLTM) for supporting this study through Sea-water Engineering & Architecture of High Eff i-ciency Reverse Osmosis (seaHERO) program.

Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.

Keywords

Flow field-flow fractionation (Fl-FFF)
Fouling index
Modified fouling index (MFI)
Silt density index (SDI)
TDS effect

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science
Water Science and Technology
Mechanical Engineering

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10.1016/j.desal.2008.12.029

Cite this

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title = "Assessment of various membrane fouling indexes under seawater conditions",

abstract = "In this study, various foulants are tested with the conventional fouling indexes such as silt density index (SDI) and modified fouling index (MFI) under high TDS conditions to evaluate the practical appliance of these indexes for RO desalination. A new approach for developing a more realistic fouling index is investigated based on flow field-flow fraction (Fl-FFF) analysis. The results showed that the SDI and MFI for the feed waters containing the particulate foulants larger than the pore size of the membranes used in SDI and MFI measurements were not significantly affected by the feed water salinity. This is due to the fact that the main fouling mechanism is the deposition of particles on the membrane surface and, hence, the cake filtration controls the permeate flux. In case of the particles as well as organics smaller than the pore size of the membranes, the SDI and MFI failed to accurately predict the fouling potential of feed waters with high salinity. In addition, the characteristics of membrane (i.e., hydrophobicity) also played an important role in determining membrane performance. Based on the results from Fl-FFF analyses, it was demonstrated that both qualitative and quantitative assessments of fouling potential of feed waters with different foulants and TDS conditions were possible.",

keywords = "Flow field-flow fractionation (Fl-FFF), Fouling index, Modified fouling index (MFI), Silt density index (SDI), TDS effect",

author = "Keewoong Hong and Sangyoup Lee and Soohoon Choi and Youngbeom Yu and Seungkwan Hong and Jihee Moon and Jinsik Sohn and Jeongseok Yang",

note = "Funding Information: The authors would like to thank the Ministry of Land, Transport and Maritime Affairs (MLTM) for supporting this study through Sea-water Engineering \& Architecture of High Eff i-ciency Reverse Osmosis (seaHERO) program. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

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doi = "10.1016/j.desal.2008.12.029",

language = "English",

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AU - Hong, Keewoong

AU - Lee, Sangyoup

AU - Choi, Soohoon

AU - Yu, Youngbeom

AU - Hong, Seungkwan

AU - Moon, Jihee

AU - Sohn, Jinsik

AU - Yang, Jeongseok

N1 - Funding Information: The authors would like to thank the Ministry of Land, Transport and Maritime Affairs (MLTM) for supporting this study through Sea-water Engineering & Architecture of High Eff i-ciency Reverse Osmosis (seaHERO) program. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.

PY - 2009/10

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Assessment of various membrane fouling indexes under seawater conditions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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