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Cho, Jaeweon
OWIELAB(Organic-Water Interface Engineering Laboratory)
Research Interests
  • Convergence of Science and Arts, Feces Standard Money (FSM), Water & Energy

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Characterization of clean and natural organic matter (NOM) fouled NF and UF membranes, and foulants characterization

Cited 166 times inthomson ciCited 179 times inthomson ci
Title
Characterization of clean and natural organic matter (NOM) fouled NF and UF membranes, and foulants characterization
Author
Cho, JaeweonAmy, GaryPellegrino, JohnYoon, Yeomin
Keywords
Contact angle; Fouling; Fractionation; Hydrophobicity; Infrared spectroscopy; Light absorption; Nanofiltration; Ultrafiltration
Issue Date
1998-09
Publisher
ELSEVIER SCIENCE BV
Citation
DESALINATION, v.118, no.1-3, pp.101 - 108
Abstract
Contact angles, zeta potentials, and IR spectra of clean and NOM-fouled membranes were compared to demonstrate differences in hydrophobicity, surface charge, and functional groups, respectively. Contact angle increased and decreased for membranes fouled with hydrophobic and hydrophilic NOM, respectively. Zeta potential decreased negatively (less negative) for membranes fouled with both hydrophobic and hydrophilic NOM, suggesting that ionizable functional groups were coated with non-ionizable NOM components (possibly neutrals). The IR spectra reduced in absorbance intensity for NOM-fouled membranes, suggesting that aromatic groups were coated with non-aromatic or less aromatic NOM components. The results of XAD-8/4 fractionations of: foulants (desorbed NOM with NaOH) showed that hydrophilic and hydrophobic NOM components were the major foulants for membranes fouled with hydrophilic and hydrophobic NOM-source waters, respectively
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DOI
10.1016/S0011-9164(98)00100-3
ISSN
0011-9164
Appears in Collections:
UEE_Journal Papers
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