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116th General Meeting of Korean Chemical Society Optimization of fractionation efficiency (FE) and throughput (TP) in a large scale splitter less full-feed depletion SPLITT fractionation (FFD-SF)

Submission Date :
9 / 3 / 2015 , 16 : 18 : 12
Abstract Number :
116090321197
Presenting Type:
Oral Presentation
Presenting Area :
분석화학 - Oral Presentation of Young Analytical Chemists II
Authors :
유영석, 최재영, 김운중, 음철헌1, 이승호*
한남대학교 화학과, Korea
1한국지질자원연구원 화학분석연구실, Korea
Assigned Code :
ANAL2.O-20 Assigend Code Guideline
Presenting Time :
FRI, 15 : 49
Split-flow thin cell fractionation (SPLITT fractionation, SF) is a particle separation technique that allows continuous (and thus a preparative scale) separation into two subpopulations based on the particle size and the density. In a conventional mode (conventional SF), there are two inlets and two outlets in the SF channel, which is equipped with a flow stream splitter at the inlet and the outlet of the channel, respectively. On the other hand, in the full-feed depletion mode (FFD-SF), there are only one inlet for the sample feed, and the channel is equipped with a flow stream splitter only at the outlet. In SF, there are two basic performance parameters. One is the throughput (TP), which was defined as the amount of sample that can be processed in a unit time period. Another is the fractionation efficiency (FE), which was defined as the number % of particles that have the size predicted by theory. In this study, a FFD-SF channel was developed for a large-scale fraction, which has no flow stream splitters (‘splitter less FFD-SF’), and then was tested for optimum TP and FE by varying the sample concentration and the flow rates at the inlet and outlet of the channel. Polyurethane (PU) latex beads having two different size distribution (about 3 ~ 7 μm, and about 2 ~ 30 μm) were used for the test. The sample concentration was varied from 0.2 to 8 %wt/vol. The channel flow rates were varied from 70 to 160 mL/min. The fractionated particles are monitored by optical microscopy (OM). The sample recovery was determined by collecting the particles on a 0.1 μm membrane filter.