Preparation and application of patterned membranes for wastewater treatment
Membrane fouling remains a critical factor limiting the widespread use of membrane processes in water and wastewater treatment. To mitigate membrane fouling, we introduced a patterned morphology on the membrane surface using a lithographic method. A modified immersion precipitation method was develo...
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sg-ntu-dr.10356-826592020-03-07T12:48:42Z Preparation and application of patterned membranes for wastewater treatment Won, Young-June Lee, Jaewoo Choi, Dong-Chan Chae, Hee-Ro Kim, Inae Lee, Chung-Hak Kim, In-Chul Nanyang Environment and Water Research Institute Patterned surface Wastewater treatment Membrane fouling remains a critical factor limiting the widespread use of membrane processes in water and wastewater treatment. To mitigate membrane fouling, we introduced a patterned morphology on the membrane surface using a lithographic method. A modified immersion precipitation method was developed to relieve the formation of dense layer at the solvent–nonsolvent interface, that is, the opposite side of the patterned surface. Diverse patterned membranes, such as pyramid-, prism-, and embossing-patterned membranes, were prepared and compared with a flat membrane in terms of morphology, permeability, and biofouling. Patterned membrane fidelity was largely dependent on the polymer concentration in cast solution. The patterned surface augmented the water flux in proportion to the roughness factor of the patterned membrane. However, the type of pattern did not affect substantially the mean pore size on the patterned surface. Deposition of microbial cells on the patterned membrane was significantly reduced compared to that on the flat membrane in the membrane bioreactor (MBR) for wastewater treatment. This was attributed to hydraulic resistance of the apex of the patterned surface, which induced local turbulence. 2017-05-09T09:15:19Z 2019-12-06T14:59:51Z 2017-05-09T09:15:19Z 2019-12-06T14:59:51Z 2012 2012 Journal Article Won, Y.-J., Lee, J., Choi, D.-C., Chae, H. R., Kim, I., Lee, C.-H., et al. (2012). Preparation and Application of Patterned Membranes for Wastewater Treatment. Environmental Science & Technology, 46, 11021-11027. 0013-936X https://hdl.handle.net/10356/82659 http://hdl.handle.net/10220/42360 10.1021/es3020309 197469 en Environmental Science & Technology © 2012 American Chemical Society. 7 p. |
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Patterned surface Wastewater treatment |
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Patterned surface Wastewater treatment Won, Young-June Lee, Jaewoo Choi, Dong-Chan Chae, Hee-Ro Kim, Inae Lee, Chung-Hak Kim, In-Chul Preparation and application of patterned membranes for wastewater treatment |
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Membrane fouling remains a critical factor limiting the widespread use of membrane processes in water and wastewater treatment. To mitigate membrane fouling, we introduced a patterned morphology on the membrane surface using a lithographic method. A modified immersion precipitation method was developed to relieve the formation of dense layer at the solvent–nonsolvent interface, that is, the opposite side of the patterned surface. Diverse patterned membranes, such as pyramid-, prism-, and embossing-patterned membranes, were prepared and compared with a flat membrane in terms of morphology, permeability, and biofouling. Patterned membrane fidelity was largely dependent on the polymer concentration in cast solution. The patterned surface augmented the water flux in proportion to the roughness factor of the patterned membrane. However, the type of pattern did not affect substantially the mean pore size on the patterned surface. Deposition of microbial cells on the patterned membrane was significantly reduced compared to that on the flat membrane in the membrane bioreactor (MBR) for wastewater treatment. This was attributed to hydraulic resistance of the apex of the patterned surface, which induced local turbulence. |
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Nanyang Environment and Water Research Institute |
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Nanyang Environment and Water Research Institute Won, Young-June Lee, Jaewoo Choi, Dong-Chan Chae, Hee-Ro Kim, Inae Lee, Chung-Hak Kim, In-Chul |
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Article |
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Won, Young-June Lee, Jaewoo Choi, Dong-Chan Chae, Hee-Ro Kim, Inae Lee, Chung-Hak Kim, In-Chul |
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Won, Young-June |
title |
Preparation and application of patterned membranes for wastewater treatment |
title_short |
Preparation and application of patterned membranes for wastewater treatment |
title_full |
Preparation and application of patterned membranes for wastewater treatment |
title_fullStr |
Preparation and application of patterned membranes for wastewater treatment |
title_full_unstemmed |
Preparation and application of patterned membranes for wastewater treatment |
title_sort |
preparation and application of patterned membranes for wastewater treatment |
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2017 |
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https://hdl.handle.net/10356/82659 http://hdl.handle.net/10220/42360 |
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1681035574916415488 |