Preparation, Characterization and Salt Rejection of Negatively Charged Polyamide Nanofiltration Membranes
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| Format: | Artículo científico |
| Langue: | en |
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Sociedad Química de México
2007
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| _version_ | 1876475833978191872 |
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| author | Shui Wai Lin |
| author_facet | Shui Wai Lin |
| contents | Preparation, Characterization and Salt Rejection of Negatively Charged Polyamide Nanofiltration Membranes Shui Wai Lin Sergio Pérez Sicairos Rosa María Félix Navarro Multidisciplinaria (Ciencias Naturales y Exactas) preparation NF performances characterization Polyamide NF membrane Four thin-film composite (TFC) polyamide negativelycharged nanofiltration (NF) membranes (NF-PS-1, NF-PS-2, NF-PS-3 and NF-PS-4) were prepared via interfacial polymerization techniquewhich involved the formation of a polyamide thin film at theinterfacial polysulfone (PS) microporous substrate between twoimmiscible liquid phases; an aqueous phase containing piperazine andan organic phase containing trimesoyl chloride (TMC = 0.25, 0.50,1.00 and 2.00 wt%). Correlations of the intrinsic properties of thesefour NF filtration membranes, in regarding to the physical structures,surface negative charge density, pure water flux, pore size and the NFfiltration performances, on the composition of the weight-% of TMCin the organic phase were investigated. Experimental results clearlydemonstrated that NF membrane prepared from using 1.0 wt-% ofTMC in hexane phase (i.e., NF-PS-3) gave a much higher salt rejectionson salt containing negative divalent salts like Na2SO4 andMgSO4; the maximum rejection of Na2SO4 and MgSO4 were both tobe 99.6 % for NF-PS-3 (TMC = 1.0 wt-%) while the rejections ofNa2SO4 and MgSO4 for the rest of the three NF membranes were inthe order of NF-PS-2 (TMC = 0.50 wt-%) > NF-PS-1 (TMC = 0.25wt-%) > NF-PS-4 (TMC = 2.00 wt-%). Effects of the pH of the feedand the applied filtration pressure on the MgSO4 rejection were alsoinvestigated for this series of nanofiltration membranes. 2007 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47551301 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.3 Vol.51 |
| format | Artículo científico |
| id | redalyc_47551301 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Sociedad Química de México |
| spellingShingle | Preparation, Characterization and Salt Rejection of Negatively Charged Polyamide Nanofiltration Membranes Shui Wai Lin Multidisciplinaria (Ciencias Naturales y Exactas) preparation NF performances characterization Polyamide NF membrane Preparation, Characterization and Salt Rejection of Negatively Charged Polyamide Nanofiltration Membranes Shui Wai Lin Sergio Pérez Sicairos Rosa María Félix Navarro Multidisciplinaria (Ciencias Naturales y Exactas) preparation NF performances characterization Polyamide NF membrane Four thin-film composite (TFC) polyamide negativelycharged nanofiltration (NF) membranes (NF-PS-1, NF-PS-2, NF-PS-3 and NF-PS-4) were prepared via interfacial polymerization techniquewhich involved the formation of a polyamide thin film at theinterfacial polysulfone (PS) microporous substrate between twoimmiscible liquid phases; an aqueous phase containing piperazine andan organic phase containing trimesoyl chloride (TMC = 0.25, 0.50,1.00 and 2.00 wt%). Correlations of the intrinsic properties of thesefour NF filtration membranes, in regarding to the physical structures,surface negative charge density, pure water flux, pore size and the NFfiltration performances, on the composition of the weight-% of TMCin the organic phase were investigated. Experimental results clearlydemonstrated that NF membrane prepared from using 1.0 wt-% ofTMC in hexane phase (i.e., NF-PS-3) gave a much higher salt rejectionson salt containing negative divalent salts like Na2SO4 andMgSO4; the maximum rejection of Na2SO4 and MgSO4 were both tobe 99.6 % for NF-PS-3 (TMC = 1.0 wt-%) while the rejections ofNa2SO4 and MgSO4 for the rest of the three NF membranes were inthe order of NF-PS-2 (TMC = 0.50 wt-%) > NF-PS-1 (TMC = 0.25wt-%) > NF-PS-4 (TMC = 2.00 wt-%). Effects of the pH of the feedand the applied filtration pressure on the MgSO4 rejection were alsoinvestigated for this series of nanofiltration membranes. 2007 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47551301 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.3 Vol.51 |
| title | Preparation, Characterization and Salt Rejection of Negatively Charged Polyamide Nanofiltration Membranes |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) preparation NF performances characterization Polyamide NF membrane |
| url | https://www.redalyc.org/articulo.oa?id=47551301 |