| 초록 |
The colloid-enhanced ultrafiltration (CEUF) is a separation method which can beused for the simultaneous removal of organics and metal cations by employing anon-ionic polymer and an anionic surfactant. In the present work, CEUF of diluteo-cresol was investigated by using complexes formed by sodium dodecyl sulfate(SDS)and hydroxypropylcellulose(HPC) in order to test the performance of CEUF for theremoval of dilute o-cresol and to evaluate the role of HPC as a "scavenger" forsurfactant species that enter the permeate. In order to study the CEUF, stirred-cellexperiments were performed. When [HPC] is 1.2 wt %, the rejection of o-cresol is muchhigher than that for MEUF utilizing SDS micelles. In contrast, the relative flux forCEUF was lower than the flux obtained from MEUF. However, when the polymer oflow molecular weight was employed, the relative flux was remarkably increased. For therole of HPC as a "scavenger", the HPC/SDS/water system was not so effective toreduce the leakage of SDS in CEUF. However, for obtaining the same level of o-cresolrejection, CEUF needed much less [SDS] than MEUF. Therefore, CEUF could providethe less leakage of SDS.
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