The influence of membrane charge and porosity upon fouling and cleaning during the ultrafiltration of orange juice

Nurul Hainiza Abd-Razak; Arto Pihlajamäki; Tiina Virtanen; Y. M. John Chew; Michael R. Bird

doi:10.1016/j.fbp.2021.01.009

The influence of membrane charge and porosity upon fouling and cleaning during the ultrafiltration of orange juice

Nurul Hainiza Abd-Razak, Arto Pihlajamäki, Tiina Virtanen, Y. M. John Chew, Michael R. Bird

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Abstract

The ultrafiltration of orange juice has been performed to separate phytosterols from proteins. Commercial regenerated cellulose acetate (RCA) ultrafiltration membranes of different molecular weight cut offs (MWCOs) of 10 kDa, 30 kDa and 100 kDa were fouled with orange juice and cleaned with Ultrasil 11 over two operational cycles. Fouling and cleaning mechanisms were investigated by using surface zeta potential, Brunauer-Emmet-Teller (BET) analysis and Fourier transform infrared (FTIR) analysis. The RCA conditioned membranes displayed zeta potential values of −0.2 to −31.5 mV. Fouling caused RCA membranes to have a greater magnitude of negative surface charge and cleaning restored the membrane surface charges close to its pristine state. Fouling increased both the total surface area and the total pore volume of all membranes. The total surface area and total pore volume for RCA 100 kDa after fouling increased by 102% and 185%, respectively. Pore area and volume distributions revealed that the porosities were returned close to the original level after cleaning. The recovery flux ratios of RCA 10, RCA 30 and RCA 100 decreased after fouling by 27%, 6% and 10% respectively; and changes were 25%, 9% and 1% respectively after cleaning. The charge of membrane surfaces after two operational cycles and the IR intensity of RCA membrane deposits, varied with MWCO such that RCA 30 > RCA 100 > RCA 10. Ultrafiltration using RCA 10 kDa membrane displayed the best separation efficiency, with 32 ± 4% rejection of phytosterols. and 96 ± 1% rejection of proteins. Changes in membrane surface charge and porosity have been found to affect the RCA membrane performance due to fouling and cleaning during the isolation of phytosterols from orange juice.

Original language	English
Pages (from-to)	184-194
Number of pages	11
Journal	Food and Bioproducts Processing
Volume	126
Early online date	23 Jan 2021
DOIs	https://doi.org/10.1016/j.fbp.2021.01.009
Publication status	Published - 31 Mar 2021

Bibliographical note

Funding Information:
The authors would like to thank the Malaysian Rubber Board, Malaysia for providing financial support through grant number RMK11-T2SH41201 . The authors also thank Dr. Haofei Guo of Alfa Laval, Denmark for kindly supplying the membranes used in this study.

Funding

The authors would like to thank the Malaysian Rubber Board, Malaysia for providing financial support through grant number RMK11-T2SH41201 . The authors also thank Dr. Haofei Guo of Alfa Laval, Denmark for kindly supplying the membranes used in this study.

Keywords

Membrane fouling
Orange juice
Phytosterols
Porosity
Surface charge

ASJC Scopus subject areas

Biotechnology
Food Science
Biochemistry
General Chemical Engineering

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10.1016/j.fbp.2021.01.009

Charge & porosity in UF of orange juice - Manuscript_ final_acceptedAccepted author manuscript, 2.07 MBLicence: CC BY-NC-ND

Cite this

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title = "The influence of membrane charge and porosity upon fouling and cleaning during the ultrafiltration of orange juice",

abstract = "The ultrafiltration of orange juice has been performed to separate phytosterols from proteins. Commercial regenerated cellulose acetate (RCA) ultrafiltration membranes of different molecular weight cut offs (MWCOs) of 10 kDa, 30 kDa and 100 kDa were fouled with orange juice and cleaned with Ultrasil 11 over two operational cycles. Fouling and cleaning mechanisms were investigated by using surface zeta potential, Brunauer-Emmet-Teller (BET) analysis and Fourier transform infrared (FTIR) analysis. The RCA conditioned membranes displayed zeta potential values of −0.2 to −31.5 mV. Fouling caused RCA membranes to have a greater magnitude of negative surface charge and cleaning restored the membrane surface charges close to its pristine state. Fouling increased both the total surface area and the total pore volume of all membranes. The total surface area and total pore volume for RCA 100 kDa after fouling increased by 102% and 185%, respectively. Pore area and volume distributions revealed that the porosities were returned close to the original level after cleaning. The recovery flux ratios of RCA 10, RCA 30 and RCA 100 decreased after fouling by 27%, 6% and 10% respectively; and changes were 25%, 9% and 1% respectively after cleaning. The charge of membrane surfaces after two operational cycles and the IR intensity of RCA membrane deposits, varied with MWCO such that RCA 30 > RCA 100 > RCA 10. Ultrafiltration using RCA 10 kDa membrane displayed the best separation efficiency, with 32 ± 4% rejection of phytosterols. and 96 ± 1% rejection of proteins. Changes in membrane surface charge and porosity have been found to affect the RCA membrane performance due to fouling and cleaning during the isolation of phytosterols from orange juice.",

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author = "Abd-Razak, {Nurul Hainiza} and Arto Pihlajam{\"a}ki and Tiina Virtanen and {John Chew}, {Y. M.} and Bird, {Michael R.}",

note = "Funding Information: The authors would like to thank the Malaysian Rubber Board, Malaysia for providing financial support through grant number RMK11-T2SH41201 . The authors also thank Dr. Haofei Guo of Alfa Laval, Denmark for kindly supplying the membranes used in this study. ",

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AU - Abd-Razak, Nurul Hainiza

AU - Pihlajamäki, Arto

AU - Virtanen, Tiina

AU - John Chew, Y. M.

AU - Bird, Michael R.

N1 - Funding Information: The authors would like to thank the Malaysian Rubber Board, Malaysia for providing financial support through grant number RMK11-T2SH41201 . The authors also thank Dr. Haofei Guo of Alfa Laval, Denmark for kindly supplying the membranes used in this study.

PY - 2021/3/31

Y1 - 2021/3/31

N2 - The ultrafiltration of orange juice has been performed to separate phytosterols from proteins. Commercial regenerated cellulose acetate (RCA) ultrafiltration membranes of different molecular weight cut offs (MWCOs) of 10 kDa, 30 kDa and 100 kDa were fouled with orange juice and cleaned with Ultrasil 11 over two operational cycles. Fouling and cleaning mechanisms were investigated by using surface zeta potential, Brunauer-Emmet-Teller (BET) analysis and Fourier transform infrared (FTIR) analysis. The RCA conditioned membranes displayed zeta potential values of −0.2 to −31.5 mV. Fouling caused RCA membranes to have a greater magnitude of negative surface charge and cleaning restored the membrane surface charges close to its pristine state. Fouling increased both the total surface area and the total pore volume of all membranes. The total surface area and total pore volume for RCA 100 kDa after fouling increased by 102% and 185%, respectively. Pore area and volume distributions revealed that the porosities were returned close to the original level after cleaning. The recovery flux ratios of RCA 10, RCA 30 and RCA 100 decreased after fouling by 27%, 6% and 10% respectively; and changes were 25%, 9% and 1% respectively after cleaning. The charge of membrane surfaces after two operational cycles and the IR intensity of RCA membrane deposits, varied with MWCO such that RCA 30 > RCA 100 > RCA 10. Ultrafiltration using RCA 10 kDa membrane displayed the best separation efficiency, with 32 ± 4% rejection of phytosterols. and 96 ± 1% rejection of proteins. Changes in membrane surface charge and porosity have been found to affect the RCA membrane performance due to fouling and cleaning during the isolation of phytosterols from orange juice.

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KW - Membrane fouling

KW - Orange juice

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VL - 126

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ER -

The influence of membrane charge and porosity upon fouling and cleaning during the ultrafiltration of orange juice

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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3Flex+ 1MP Analyser with flow degasser

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The influence of membrane charge and porosity upon fouling and cleaning during the ultrafiltration of orange juice

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Equipment

3Flex+ 1MP Analyser with flow degasser

Cite this