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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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Removal of taste and odor model compound (2,4,6-trichloroanisole) by tight ultrafiltration membranes

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Title
Removal of taste and odor model compound (2,4,6-trichloroanisole) by tight ultrafiltration membranes
Author
Park, NoeonLee, YonghunLee, SeockheonCho, Jaeweon
Keywords
2,4,6-trichloroanisole (TCA); Hydrophobic interactions; Natural organic matter (NOM); Taste and odor compound; Tight ultrafiltration membranes
Issue Date
2007-06
Publisher
ELSEVIER SCIENCE BV
Citation
DESALINATION, v.212, no.1-3, pp.28 - 36
Abstract
Taste and odor causing organic compounds of concern to the general public are produced at low concentrations (i.e., ng/L) in surface water. Bench-scale membrane filtration experiments were conducted with 2,4,6-trichloroanisole (TCA), which is of special interest as a model compound due to its very low odor threshold level (i.e., 10 ng/L). Four different tight ultrafiltration (UF) membranes, with different molecular weight cutoffs (MWCO) and hydrophobicities were investigated. The removal of TCA decreased with increasing permeability for all of the UF membranes tested. Relatively hydrophobic UF membranes, even those with higher MWCO and permeability values, exhibited much higher TCA removal efficiencies than relatively hydrophilic UF membranes, both in the presence and absence of hydrophobic natural organic matter (Suwannee River NOM). The adsorption of TCA onto the membrane surfaces/pores through the hydrophobic interaction was found to be important for the efficient removals of TCA by hydrophobic UF membranes, especially those with greater hydrophobicities. The removals of TCA by the tight-UF membranes were affected by two major mechanisms: (1) a convection mechanism for the transmission of TCA through the membrane pores and (2) the adsorption of TCA onto the membrane surfaces/pores through hydrophobic interactions
URI
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DOI
10.1016/j.desal.2006.10.002
ISSN
0011-9164
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