A facile method to estimate the effective membrane pore charge density through surface zeta potential measurement
In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Dutta, Madhurima [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Steering charge kinetics in W - Yue, Xin-Zheng ELSEVIER, 2019, the official journal of the North American Membrane Society, New York, NY [u.a.] |
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| Übergeordnetes Werk: |
volume:637 ; year:2021 ; day:1 ; month:11 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.memsci.2021.119655 |
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| 245 | 1 | 0 | |a A facile method to estimate the effective membrane pore charge density through surface zeta potential measurement |
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| 520 | |a In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. | ||
| 520 | |a In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. | ||
| 650 | 7 | |a Surface modification |2 Elsevier | |
| 650 | 7 | |a Donnan steric pore model |2 Elsevier | |
| 650 | 7 | |a Nanofiltration |2 Elsevier | |
| 650 | 7 | |a Zeta potential |2 Elsevier | |
| 650 | 7 | |a Effective membrane pore charge density |2 Elsevier | |
| 700 | 1 | |a Upadhyay, Shivam |4 oth | |
| 700 | 1 | |a De, Sirshendu |4 oth | |
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10.1016/j.memsci.2021.119655 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001548.pica (DE-627)ELV054911796 (ELSEVIER)S0376-7388(21)00601-3 DE-627 ger DE-627 rakwb eng 540 VZ 35.17 bkl 58.50 bkl 43.12 bkl Dutta, Madhurima verfasserin aut A facile method to estimate the effective membrane pore charge density through surface zeta potential measurement 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. Surface modification Elsevier Donnan steric pore model Elsevier Nanofiltration Elsevier Zeta potential Elsevier Effective membrane pore charge density Elsevier Upadhyay, Shivam oth De, Sirshendu oth Enthalten in Elsevier Yue, Xin-Zheng ELSEVIER Steering charge kinetics in W 2019 the official journal of the North American Membrane Society New York, NY [u.a.] (DE-627)ELV002478420 volume:637 year:2021 day:1 month:11 pages:0 https://doi.org/10.1016/j.memsci.2021.119655 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.17 Katalyse VZ 58.50 Umwelttechnik: Allgemeines VZ 43.12 Umweltchemie VZ AR 637 2021 1 1101 0 |
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10.1016/j.memsci.2021.119655 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001548.pica (DE-627)ELV054911796 (ELSEVIER)S0376-7388(21)00601-3 DE-627 ger DE-627 rakwb eng 540 VZ 35.17 bkl 58.50 bkl 43.12 bkl Dutta, Madhurima verfasserin aut A facile method to estimate the effective membrane pore charge density through surface zeta potential measurement 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. Surface modification Elsevier Donnan steric pore model Elsevier Nanofiltration Elsevier Zeta potential Elsevier Effective membrane pore charge density Elsevier Upadhyay, Shivam oth De, Sirshendu oth Enthalten in Elsevier Yue, Xin-Zheng ELSEVIER Steering charge kinetics in W 2019 the official journal of the North American Membrane Society New York, NY [u.a.] (DE-627)ELV002478420 volume:637 year:2021 day:1 month:11 pages:0 https://doi.org/10.1016/j.memsci.2021.119655 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.17 Katalyse VZ 58.50 Umwelttechnik: Allgemeines VZ 43.12 Umweltchemie VZ AR 637 2021 1 1101 0 |
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10.1016/j.memsci.2021.119655 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001548.pica (DE-627)ELV054911796 (ELSEVIER)S0376-7388(21)00601-3 DE-627 ger DE-627 rakwb eng 540 VZ 35.17 bkl 58.50 bkl 43.12 bkl Dutta, Madhurima verfasserin aut A facile method to estimate the effective membrane pore charge density through surface zeta potential measurement 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. Surface modification Elsevier Donnan steric pore model Elsevier Nanofiltration Elsevier Zeta potential Elsevier Effective membrane pore charge density Elsevier Upadhyay, Shivam oth De, Sirshendu oth Enthalten in Elsevier Yue, Xin-Zheng ELSEVIER Steering charge kinetics in W 2019 the official journal of the North American Membrane Society New York, NY [u.a.] (DE-627)ELV002478420 volume:637 year:2021 day:1 month:11 pages:0 https://doi.org/10.1016/j.memsci.2021.119655 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.17 Katalyse VZ 58.50 Umwelttechnik: Allgemeines VZ 43.12 Umweltchemie VZ AR 637 2021 1 1101 0 |
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10.1016/j.memsci.2021.119655 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001548.pica (DE-627)ELV054911796 (ELSEVIER)S0376-7388(21)00601-3 DE-627 ger DE-627 rakwb eng 540 VZ 35.17 bkl 58.50 bkl 43.12 bkl Dutta, Madhurima verfasserin aut A facile method to estimate the effective membrane pore charge density through surface zeta potential measurement 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. Surface modification Elsevier Donnan steric pore model Elsevier Nanofiltration Elsevier Zeta potential Elsevier Effective membrane pore charge density Elsevier Upadhyay, Shivam oth De, Sirshendu oth Enthalten in Elsevier Yue, Xin-Zheng ELSEVIER Steering charge kinetics in W 2019 the official journal of the North American Membrane Society New York, NY [u.a.] (DE-627)ELV002478420 volume:637 year:2021 day:1 month:11 pages:0 https://doi.org/10.1016/j.memsci.2021.119655 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.17 Katalyse VZ 58.50 Umwelttechnik: Allgemeines VZ 43.12 Umweltchemie VZ AR 637 2021 1 1101 0 |
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10.1016/j.memsci.2021.119655 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001548.pica (DE-627)ELV054911796 (ELSEVIER)S0376-7388(21)00601-3 DE-627 ger DE-627 rakwb eng 540 VZ 35.17 bkl 58.50 bkl 43.12 bkl Dutta, Madhurima verfasserin aut A facile method to estimate the effective membrane pore charge density through surface zeta potential measurement 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. Surface modification Elsevier Donnan steric pore model Elsevier Nanofiltration Elsevier Zeta potential Elsevier Effective membrane pore charge density Elsevier Upadhyay, Shivam oth De, Sirshendu oth Enthalten in Elsevier Yue, Xin-Zheng ELSEVIER Steering charge kinetics in W 2019 the official journal of the North American Membrane Society New York, NY [u.a.] (DE-627)ELV002478420 volume:637 year:2021 day:1 month:11 pages:0 https://doi.org/10.1016/j.memsci.2021.119655 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.17 Katalyse VZ 58.50 Umwelttechnik: Allgemeines VZ 43.12 Umweltchemie VZ AR 637 2021 1 1101 0 |
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a facile method to estimate the effective membrane pore charge density through surface zeta potential measurement |
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A facile method to estimate the effective membrane pore charge density through surface zeta potential measurement |
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In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. |
| abstractGer |
In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. |
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In this work, an attempt was made to find a correlation between the effective membrane pore charge density (X d ), which is a non-measurable quantity and the measurable quantities like, the zeta potential of the membrane surface and initial feed concentration (C 0 ). Effects of solution pH and feed electrolyte concentration were included in the measurements of membrane zeta (ζ) potential. Seven membranes were fabricated in the range of molecular weight cut-off between 1 and 5 kDa. Zeta potential, membrane permeability, molecular weight cut off, contact angle, average pore size and Fourier transform infrared spectroscopy were used for membrane characterization. A series of monovalent salt rejection experiments were done at three initial feed concentrations of 2 g/L, 5 g/L and 10 g/L, at pH of 3, 7 and 9, at 276 kPa transmembrane pressure and 50 L/h cross flow rate. A map between X d , ζ-potential and C 0 was generated by solving the Donnan Steric Pore Model (DSPM). The good agreement amid the theoretically calculated X d and the X d calculated from the developed correlation allows one to estimate the effective membrane pore charge density for the loose NF/low cut off UF membranes by only measuring the ζ-potential and feed concentration of the solute, eliminating the requirement to solve the entire DSPM model. |
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A facile method to estimate the effective membrane pore charge density through surface zeta potential measurement |
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