2023_Peningkatan Sifat Utama Membrane Nanoturasan Polimer Menggunakan Surfaktan Sebagai Aditif
| Format: | General Document |
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| _version_ | 1860797992295989248 |
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| collectionurl | https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection3 |
| copyright | Copyright©PWB2025 |
| country | Malaysia |
| date | 2023-08-27 09:36 |
| format | General Document |
| id | 15331 |
| institution | UniSZA |
| originalfilename | PENINGKATAN SIFAT UTAMA MEMBRANE NANOTURASAN POLIMER MENGGUNAKAN SURFAKTAN SEBAGAI ADITIF |
| person | PDFsam Basic v4.3.3 Nurul Hannan Mohd Safari |
| recordtype | oai_dc |
| resourceurl | https://intelek.unisza.edu.my/intelek/pages/view.php?ref=15331 |
| sourcemedia | Server storage Scanned document |
| spelling | 15331 https://intelek.unisza.edu.my/intelek/pages/view.php?ref=15331 https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection3 General Document Malaysia Library Staff (Top Management) Library Staff (Management) Library Staff (Support) Terengganu English UniSZA East Coast Environmental Research Institute application/pdf 1.5 PDFsam Basic v4.3.3 Server storage Scanned document Universiti Sultan Zainal Abidin UniSZA Private Access Universiti Sultan Zainal Abidin SAMBox 2.4.24; modified using iTextSharp™ 5.5.10 ©2000-2016 iText Group NV (AGPL-version) 2023-08-27 09:36 PENINGKATAN SIFAT UTAMA MEMBRANE NANOTURASAN POLIMER MENGGUNAKAN SURFAKTAN SEBAGAI ADITIF 462 2023_Peningkatan Sifat Utama Membrane Nanoturasan Polimer Menggunakan Surfaktan Sebagai Aditif Copyright©PWB2025 Nurul Hannan Mohd Safari Membranes (Technology) Surfactants—Industrial applications Nanostructured materials Polymeric membranes Membrane Nanoturasan Polimer Surfaktan Aditif Membrane separation Nanocomposites (Materials) Water purification—Membrane filtration Material science—Polymers Porous materials—Chemical modification Performance-enhancing additives Advancement in fabrication techniques, modification methods, system configuration and endless efforts from experts make the membrane processes the most prominent and versatile separation based technology. The real challenge in membrane making is to produce membranes with fine performance and properties. Despite the fact that various studies have been carried out previously, the improvement of the performance and key properties of the membrane is still inadequate and requires further studies. The addition of additives into the membrane has been identified as one of the methods that have been proven by many researchers, which is able to improve the performance and morphology of the membrane. Surfactant additives as a surface active agent will have a significant impact on the miscibility of casting solution, the coagulation process and demixing process during the phase inversion. In addition, the amphiphilic character posses by surfactant will be able to increase the hydrophilicity of the membranes, which indirectly increasing their permeability. Besides, the charge on the surfactant will increase the surface charge and charge density of the membrane, which is a crucial factor in improving the nanofiltration rejection rate. Therefore, this study focused on the charge effect as well as hydrophilic properties of the surfactant additives in the fabrication of nanofiltration membranes with highly selectivity, narrow pores, fine key properties and high surface charge. In this study, formulations of dope solution consisting of polysulfone, n-methyl-2-pyrrolidone and water were formulated from 19 to 23 wt% of PSf concentration. The asymmetric nanofiltration membranes were fabricated via dry/wet phase inversion. Surfactant additives namely sodium dodecyl sulfate (SDS), cetyl trimethyl ammonium bromide (CTAB) and Tween 80 (T80) were added into the membrane as single surfactants and dual surfactants at different ratios. At the operating pressures from 300 to 500 kPa, the membrane performances were evaluated in terms of pure water permeability, water flux, salts rejection and neutral solutes separation. Meanwhile, the membranes parameters and properties (rp, ∆x/Ak, ζ and molecular weight cut-off (MWCO)) were analysed using theoretical models. Then, the morphological structure of the membranes were characterised using scanning electron microscopy. From this study, the membrane prepared with polymer concentration of 20.70 wt% (optimum) demonstrated high water flux from 15.79 to 29.22 L/m2 h, 10.67 L/m2 h of salt permeation and good rejection up to 51.03%. Meanwhile, the addition of surfactants (SDS, CTAB and T80) produced higher fluxes and salt rejection of about 61.62 L/m2 h and 56.16%, respectively. It was also found that the selectivity of dual surfactant membrane (SDS/T80) increased up to 58.35%. Moreover, the modelling data revealed that the membrane key properties (rp, ∆x/Ak, ζ and MWCO) were evolved from 1.25 to1.66 nm,10.87 to 31.29 µm, -1.71 to -2.30 and 2085 to 3400 Da, which in the range of the commercial nanofiltration membranes. Therefore, the findings of this study are significant and important toward a simple and strategic approach for the production of high-performance nanofiltration membranes for various industrial applications such as wastewater treatment, ionized effluent treatment, textile industry and heavy metal industry. Dissertations, Academic Thesis |
| spellingShingle | 2023_Peningkatan Sifat Utama Membrane Nanoturasan Polimer Menggunakan Surfaktan Sebagai Aditif |
| state | Terengganu |
| subject | Membranes (Technology) Surfactants—Industrial applications Nanostructured materials Polymeric membranes Membrane separation Nanocomposites (Materials) Water purification—Membrane filtration Material science—Polymers Porous materials—Chemical modification Performance-enhancing additives Dissertations, Academic |
| summary | Advancement in fabrication techniques, modification methods, system configuration and endless efforts from experts make the membrane processes the most prominent and versatile separation based technology. The real challenge in membrane making is to produce membranes with fine performance and properties. Despite the fact that various studies have been carried out previously, the improvement of the performance and key properties of the membrane is still inadequate and requires further studies. The addition of additives into the membrane has been identified as one of the methods that have been proven by many researchers, which is able to improve the performance and morphology of the membrane. Surfactant additives as a surface active agent will have a significant impact on the miscibility of casting solution, the coagulation process and demixing process during the phase inversion. In addition, the amphiphilic character posses by surfactant will be able to increase the hydrophilicity of the membranes, which indirectly increasing their permeability. Besides, the charge on the surfactant will increase the surface charge and charge density of the membrane, which is a crucial factor in improving the nanofiltration rejection rate. Therefore, this study focused on the charge effect as well as hydrophilic properties of the surfactant additives in the fabrication of nanofiltration membranes with highly selectivity, narrow pores, fine key properties and high surface charge. In this study, formulations of dope solution consisting of polysulfone, n-methyl-2-pyrrolidone and water were formulated from 19 to 23 wt% of PSf concentration. The asymmetric nanofiltration membranes were fabricated via dry/wet phase inversion. Surfactant additives namely sodium dodecyl sulfate (SDS), cetyl trimethyl ammonium bromide (CTAB) and Tween 80 (T80) were added into the membrane as single surfactants and dual surfactants at different ratios. At the operating pressures from 300 to 500 kPa, the membrane performances were evaluated in terms of pure water permeability, water flux, salts rejection and neutral solutes separation. Meanwhile, the membranes parameters and properties (rp, ∆x/Ak, ζ and molecular weight cut-off (MWCO)) were analysed using theoretical models. Then, the morphological structure of the membranes were characterised using scanning electron microscopy. From this study, the membrane prepared with polymer concentration of 20.70 wt% (optimum) demonstrated high water flux from 15.79 to 29.22 L/m2 h, 10.67 L/m2 h of salt permeation and good rejection up to 51.03%. Meanwhile, the addition of surfactants (SDS, CTAB and T80) produced higher fluxes and salt rejection of about 61.62 L/m2 h and 56.16%, respectively. It was also found that the selectivity of dual surfactant membrane (SDS/T80) increased up to 58.35%. Moreover, the modelling data revealed that the membrane key properties (rp, ∆x/Ak, ζ and MWCO) were evolved from 1.25 to1.66 nm,10.87 to 31.29 µm, -1.71 to -2.30 and 2085 to 3400 Da, which in the range of the commercial nanofiltration membranes. Therefore, the findings of this study are significant and important toward a simple and strategic approach for the production of high-performance nanofiltration membranes for various industrial applications such as wastewater treatment, ionized effluent treatment, textile industry and heavy metal industry. |
| title | 2023_Peningkatan Sifat Utama Membrane Nanoturasan Polimer Menggunakan Surfaktan Sebagai Aditif |
| title_full | 2023_Peningkatan Sifat Utama Membrane Nanoturasan Polimer Menggunakan Surfaktan Sebagai Aditif |
| title_fullStr | 2023_Peningkatan Sifat Utama Membrane Nanoturasan Polimer Menggunakan Surfaktan Sebagai Aditif |
| title_full_unstemmed | 2023_Peningkatan Sifat Utama Membrane Nanoturasan Polimer Menggunakan Surfaktan Sebagai Aditif |
| title_short | 2023_Peningkatan Sifat Utama Membrane Nanoturasan Polimer Menggunakan Surfaktan Sebagai Aditif |
| title_sort | 2023_peningkatan sifat utama membrane nanoturasan polimer menggunakan surfaktan sebagai aditif |