Effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique
Asymmetric membranes were prepared from a multicomponent dope polymer solution consisting of cellulose acetate, acetone, formamide and methanol. In this work, the drybet phase inversion technique is used and the presence of methanol is studied. In addition, this work also presents the fundamental is...
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| Language: | en |
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Penerbit UTM Press
2001
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| Online Access: | http://eprints.utm.my/741/1/JT34F4.pdf http://eprints.utm.my/741/ http://www.penerbit.utm.my/onlinejournal/34/F/JT34F4.pdf |
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| author | Idris, A. Ismail, A. F. Iswandi, S. Shilton, S. J. |
| author_facet | Idris, A. Ismail, A. F. Iswandi, S. Shilton, S. J. |
| author_sort | Idris, A. |
| building | UTM Library |
| collection | Institutional Repository |
| content_provider | Universiti Teknologi Malaysia |
| content_source | UTM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Asymmetric membranes were prepared from a multicomponent dope polymer solution consisting of cellulose acetate, acetone, formamide and methanol. In this work, the drybet phase inversion technique is used and the presence of methanol is studied. In addition, this work also presents the fundamental issues involved in altering flat sheet casting solutions to produce solutions, potentially useful for preparing hollow fibers within, defect free selective layers. Variations in the composition of multicomponent casting solution resulted in membranes with drastically different reverse osmosis performance. The membrane performance are determined experimentally by primary parameters such as the pure water permeation rate (PWP), salt permeation rate (PR) and rejection rates. From these da@ the secondary parameters such as pure water permeability constant (A), solute transport parameter (DAM/K6) and mass kansfer coefficient (k) are determined. These parameters are important in the prediction of reverse osmosis performance and also in characterising membrane morphology. ?he results revealed that the presence of methanol in the dope formulation increases the percentage of salt rejection and flux flow. The relatively laver value of (DAM/K6) for a reference solute indicates a relatively smaller average pore size on the membrane surface. |
| format | Article |
| id | my.utm.eprints-741 |
| institution | Universiti Teknologi Malaysia |
| language | en |
| publishDate | 2001 |
| publisher | Penerbit UTM Press |
| record_format | eprints |
| spelling | my.utm.eprints-7412017-11-01T04:17:50Z http://eprints.utm.my/741/ Effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique Idris, A. Ismail, A. F. Iswandi, S. Shilton, S. J. TP Chemical technology Asymmetric membranes were prepared from a multicomponent dope polymer solution consisting of cellulose acetate, acetone, formamide and methanol. In this work, the drybet phase inversion technique is used and the presence of methanol is studied. In addition, this work also presents the fundamental issues involved in altering flat sheet casting solutions to produce solutions, potentially useful for preparing hollow fibers within, defect free selective layers. Variations in the composition of multicomponent casting solution resulted in membranes with drastically different reverse osmosis performance. The membrane performance are determined experimentally by primary parameters such as the pure water permeation rate (PWP), salt permeation rate (PR) and rejection rates. From these da@ the secondary parameters such as pure water permeability constant (A), solute transport parameter (DAM/K6) and mass kansfer coefficient (k) are determined. These parameters are important in the prediction of reverse osmosis performance and also in characterising membrane morphology. ?he results revealed that the presence of methanol in the dope formulation increases the percentage of salt rejection and flux flow. The relatively laver value of (DAM/K6) for a reference solute indicates a relatively smaller average pore size on the membrane surface. Penerbit UTM Press 2001-06 Article NonPeerReviewed application/pdf en http://eprints.utm.my/741/1/JT34F4.pdf Idris, A. and Ismail, A. F. and Iswandi, S. and Shilton, S. J. (2001) Effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique. Jurnal Teknologi F (34F). pp. 39-50. ISSN 0127-9696 http://www.penerbit.utm.my/onlinejournal/34/F/JT34F4.pdf |
| spellingShingle | TP Chemical technology Idris, A. Ismail, A. F. Iswandi, S. Shilton, S. J. Effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique |
| title | Effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique |
| title_full | Effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique |
| title_fullStr | Effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique |
| title_full_unstemmed | Effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique |
| title_short | Effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique |
| title_sort | effect of methanol concentration on the performance of asymmetric cellulose acetate reverse osmosis membranes using dry/ wet phase inversion technique |
| topic | TP Chemical technology |
| url | http://eprints.utm.my/741/1/JT34F4.pdf http://eprints.utm.my/741/ http://www.penerbit.utm.my/onlinejournal/34/F/JT34F4.pdf |
| url_provider | http://eprints.utm.my/ |