| Abstract |
| In this study, full-factorial-design was introduced as an efficient method for investigating and optimizing important parameters for the membrane manufactured by phase-inversion method. The PSF membrane comprises polyethylene glycol (PEG). The membrane was fabricated under the following conditions: the concentration of PEG was 3-7% (w/v), retention time was 20-40 min, and temperature was 15-35°C. We investigated the effects of these three parameters on membrane performance, i.e., permeate flux and humic acid (HA) rejection, in aqueous solutions with an HA concentration of 10 mg/L at 1 bar pressure. Furthermore, the full factorial design was used to elucidate these effects and optimize the parameters. Variance analysis showed that the PEG concentration, temperature, and retention time significantly influence the permeate flux. The results indicated that the increase in the concentration of PEG and the retention time increases the permeate flux; however, the increase in the temperature decreases the permeate flux. Moreover, the HA rejection decreases as the temperature increases. The highest permeate flux and HA rejection values obtained from the optimization process were 216.93 L/m2h and 86.09%, respectively. Our investigation shows that the full factorial design used in this experiment could be a useful tool for optimizing parameters in membrane synthesis using the phase-inversion method and evaluating the effects of the experimental conditions on the membrane properties. |
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| Key Words |
| Full-factorial-design, Micro-filtration, Optimization, Phase-inversion-method, Polysulfone, 완전요인배치, 미세여과, 최적화, 상-전환법, 폴리설폰 |
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