Browse > Article

Effect of Ether-Typed Alcohols on Pore Formation in Preparing an Asymmetrically Porous Polysulfone Membrane  

Choi, Yong-Jin (Department of Chemical Engineering, Dong-eui University)
Kang, Byung-Chul (Department of Chemical Engineering, Dong-eui University)
Publication Information
Membrane Journal / v.20, no.2, 2010 , pp. 135-141 More about this Journal
Abstract
Various asymmetric Polysulfone membranes were prepared for a MBR process. Ether-typed alcohols (co-solvent) were added into a dope solution in order to control the pore size of membrane, whose effect on water permeability were investigated. Pore size of the prepared membranes were more affected by molecular-structure of co-solvent than by boiling point of theirs. With the increasing order of methoxy ($CH_3$-O-) < secondary propanol ($-CH_2$-CH(OH)$-CH_3$) < ethoxy ($CH_3-CH_2$-O-), water permeability of the prepared membrane increased. The phenomenon might attribute to the difference of molecularly steric hinderance of co-solvent (eg, Methoxy propanol, Ethoxy ethanol, Methoxy ethanol) in dope solution during the phase inversion. By the addition of ether typed alcohol into a dope solution, the pore size of MF (microfiltration) could be controlled. Also, Membrane prepared was applied to a MBR process and the system was stably operated for 2 months.
Keywords
MBR; ether alcohol; polysulfone membrane; water permeability; steric hinderance;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Y. J. Choi, S. H. Moon, T. Yamaguchi, and S. I. Nakao, "New Morphological Control for Thick, Porous Membranes with a Plasma Graft-Filling Polymerization", J. Polym. Sci. Part A: Polym. Chem., 41(9), 1216 (2003).   DOI   ScienceOn
2 Y. J. Choi, T. Yamaguchi, and S. I. Nako, "A novel separation system using porous thermo-sensitive membranes", Ind. Eng. Chem. Res., 39(7), 2491 (2000).   DOI   ScienceOn
3 B. G. Park, S. H. Kong, and S. Y. Nam, "비용매 알코올 응고조를 이용한 폴리술폰 막의 상전이 거동 및 모폴로지 특성 연구", Membrane Journal, 15(4), 727 (2005).   과학기술학회마을
4 N. W. Kim, "폴리에테르술폰 정밀여과막의 제조 및 특성연구", Membrane Journal, 17(4), 329 (2007).   과학기술학회마을
5 M. Mulder, Basic principles of membrane technology 2nd ed, Kluwer Academ. Publ., Netherlands, 71-156 (2000).
6 S. R. Choi, S. J. Park, B. K. Seo, K. W. Lee, S. T. Nam, and M. J. Han, "폴리설폰 상전환막의 제조에 있어 프로피오닉산 첨가제의 영향" Membrane Journal, 18(4), 317 (2008).   과학기술학회마을
7 한준영, 전재홍, "폴리에테르술폰막 제조용 조성물 및 이를 이용한 정밀여과막의 제조방법", 대한민국특허, 등록번호 10-0418859 (2004).
8 F. G. Paulsen, S. S. Shojsie, and W. B. Krantz, "Effect of evaporation step on macrovoid formation in wet-cast polymeric membranes", J. Membr. Sci., 91, 265 (1994).   DOI   ScienceOn
9 A. J. Reuvers, Membrane formation: "Diffusion induced Denixing processes in ternary system", Ph. D. Thesis, Twente University (1987).
10 E. A. Grulke and E. H. Immergur, Polymer Handbook, VII Functionation of polymer 327-545 (1999).
11 M. E. Starzak, "The physical chemistry of membranes", Academic press, Inc. San diago, New York 206-237 (1984).
12 G. T. Geo, T. S. Lee, B. H. Moon, K. S. Choi, and H. D. Lee, "Membrane separation activated sludge for residual organic removal in oil waste water", Water Sci. Tech., 36, 275 (1997).
13 K. H. Ahn, H. Y. Cha, and K. G. Song, "Retrofitting municipal sewage treatment plants using an innovative membrane-bioreactor system", Desalination, 124, 179 (1999).
14 T. Sephenson, S. J. Judd, B. Jefferson, and K. Brindle, "Membrane bioreactors for wastewater treatment", IWA Pubulising, London (2000).
15 P. Le-Clech, B. Jefferson, and Judd, "Impact of aeration, solids concentration membrane characteristics on the hydraulic performance of a membrane bioreactor", J. Membr. Sci., 218, 117 (2003).   DOI   ScienceOn
16 J. Mallevialle, P. M. R. Odendaal, and Wiesner, "Water treatment membrane processes", Chap. 17 Membrane bioreactors, MacGraw-Hill, New York, 17. 1-17. 13 (1996).
17 A. Nabe, E. Staude, and G. Befort, "Surface modification of polysulfone ultrafiltration membranes and fouling by BSA solutions", J. Membr. Sci., 133, 57 (1997).   DOI   ScienceOn
18 J. Y. Lai, F. C. Lin, C. C. Wang, and D. M. Wang, "Effect of non-solvent adictive on the porosity and morphology of asymmetric TPX membranes", J. Membr. Sci., 118, 49 (1996).   DOI   ScienceOn