화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.31, No.8, 1413-1424, August, 2014
DOI10.1007/s11814-014-0075-6  Export Citation
Deposition of toxic metal particles on rough nanofiltration membranes
Oluranti Agboola†, Jannie Maree1, Richard Mbaya, Caliphs Musa Zvinowanda1, Gomotsegang Fred Molelekwa2, Nora Jullok2, Bart Van der Bruggen2, Alexander Volodine3, and Chris Van Haesendonck3
  • Department of Chemical Engineering, Tshwane University of Technology, Pretoria, South Africa
  • 1Department of Environmental Water and Earth Science, Tshwane University of Technology, Pretoria, South Africa
  • 2Process Engineering for Sustainable Systems, Department of Chemical Engineering, KU Leuven, W. de Croylaan 46, B-3001 Heverlee, Belgium
  • 3Solid State Physics and Magnetism Section, KU Leuven, Celestijnenlaan 200d, Box 2414, B-3001 Heverlee, Belgium
E-mail:
Two nanofiltration (NF90 and Nano-Pro-3012) membranes were investigated for their capacity to remove metal ions. This study presents the effect of membrane roughness on the removal of toxic metal ions during dead end membrane filtration. Atomic force microscopy, scanning electron microscopy, WSXM software and ImageJ were used to characterize the roughness of the membranes. Gradual decrease in filtration permeate flux was observed as foulants accumulated at the interface of the membranes; filtration permeate flux varied from 20 L/m2/h to 14 L/m2/h and 11 L/m2/h to 6 L/m2/h for NF90 and Nano-Pro-3012, respectively. NF90 membrane was more prone to fouling than the Nano-Pro-3012 membrane: the percentage flux reduction was higher for NF90 (3.6%) than Nano-Pro-3012 (0.98%). The bearing ratio of the fouled NF90 exhibited a high peak of 7.09 nm than the fouled Nano-Pro-3012 with the peak of 6.8 nm.
Keywords:Particle Deposition;Flux Reduction;AFM;SEM;Roughness;Bearing Analysis
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