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Cho, Jaeweon
Sense Laboratory
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Investigation of nano-colloid transport in UF membranes using flow field-flow fractionation (flow FFF) and an irreversible thermodynamic transport model

Author(s)
Moon, JiheeCho, Jaeweon
Issued Date
2005-07
DOI
10.1016/j.desal.2004.11.063
URI
https://scholarworks.unist.ac.kr/handle/201301/11892
Fulltext
http://www.sciencedirect.com/science/article/pii/S0011916405002791
Citation
DESALINATION, v.179, no.1-3, pp.151 - 159
Abstract
Membrane fouling has been associated with the size of solutes, i.e., macromolecules and colloids in membrane filtration. Colloidal fouling propensity was investigated in terms of transport characteristics by the thermodynamic transport model combined with concentration polarization and flow field-flow fractionation (flow FFF). Transport characteristics in membranes were focused on, especially nano-colloid fouling in UF membranes. Whey protein and 30 nm of latex microsphere suspensions were used as test solutions. Transport parameters were determined in terms of mass transfer coefficient (k), solute permeability (P-m), and reflection coefficient (sigma) by non-linear estimation. The flow FFF provided a consistent explanation for the nano-colloid transport, depending on the physicochemical interactions between membrane and solute through the transport parameters determined from filtration tests. The second and third moments, variance and skewness were expected to be very useful quantitative information on the membrane fouling propensity of a certain solute
Publisher
ELSEVIER SCIENCE BV
ISSN
0011-9164
Keyword (Author)
nano-colloidsconcentration polarization coupled thermodynamic transport model (CPCT)flow field-flow fractionationmoment analyses

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