Understanding the interaction between biomacromolecules and their influence on forward osmosis process
This paper presents studies on the interactions and effects of biomacromolecules compounds on forward osmosis (FO) membrane performance. Individual components and a combination of various organic substances such as bovine serum albumin (BSA), dextran, sodium alginate and xanthan gum were used as mod...
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sg-ntu-dr.10356-827552020-03-07T11:43:31Z Understanding the interaction between biomacromolecules and their influence on forward osmosis process Arkhangelsky, Elizabeth Wicaksana, Filicia Al-Rabiah, Abdulrahman A. Al-Zahrani, Saeed M. Wang, Rong School of Civil and Environmental Engineering Singapore Membrane Technology Centre Combined organic fouling Biomacromolecules Viscosity effect Forward osmosis Effect of divalent ions This paper presents studies on the interactions and effects of biomacromolecules compounds on forward osmosis (FO) membrane performance. Individual components and a combination of various organic substances such as bovine serum albumin (BSA), dextran, sodium alginate and xanthan gum were used as model feeds and tested for their influences on FO performance with the active layer of the FO hollow fiber membrane facing the feed solution (AL-FS). The interactions between foulants were examined by using fluorescence spectroscopy, rotational rheometry and laser doppler micro-electrophoresis techniques. For a system containing combined organic foulants, it was found that viscosity was not the dominant factor governing FO membrane fouling as the decrease in viscosity did not always result in less fouling. The effect of divalent cations on the FO fouling behavior was also studied by adding CaCl2. The presence of calcium ions has exacerbated the flux decline, this occurred particularly for any combined organic foulants containing alginate, due to intermolecular bridging among alginate molecules. It is interesting to note that combined BSA + alginate caused moderate flux decline, while BSA and alginate alone did not cause any observable water flux loss. The (BSA + alginate) fouling became more severe with the presence of calcium ions. EDB (Economic Devt. Board, S’pore) Accepted version 2016-03-18T09:03:20Z 2019-12-06T15:04:53Z 2016-03-18T09:03:20Z 2019-12-06T15:04:53Z 2016 Journal Article Arkhangelsky, E., Wicaksana, F., Al-Rabiah, A. A., Al-Zahrani, S. M., & Wang, R. (2016). Understanding the interaction between biomacromolecules and their influence on forward osmosis process. Desalination, 385, 12-23. 0011-9164 https://hdl.handle.net/10356/82755 http://hdl.handle.net/10220/40307 10.1016/j.desal.2016.02.006 en Desalination © 2016 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Desalination, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.desal.2016.02.006]. 26 p. + 14 p. figures application/pdf application/pdf |
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Combined organic fouling Biomacromolecules Viscosity effect Forward osmosis Effect of divalent ions |
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Combined organic fouling Biomacromolecules Viscosity effect Forward osmosis Effect of divalent ions Arkhangelsky, Elizabeth Wicaksana, Filicia Al-Rabiah, Abdulrahman A. Al-Zahrani, Saeed M. Wang, Rong Understanding the interaction between biomacromolecules and their influence on forward osmosis process |
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This paper presents studies on the interactions and effects of biomacromolecules compounds on forward osmosis (FO) membrane performance. Individual components and a combination of various organic substances such as bovine serum albumin (BSA), dextran, sodium alginate and xanthan gum were used as model feeds and tested for their influences on FO performance with the active layer of the FO hollow fiber membrane facing the feed solution (AL-FS). The interactions between foulants were examined by using fluorescence spectroscopy, rotational rheometry and laser doppler micro-electrophoresis techniques. For a system containing combined organic foulants, it was found that viscosity was not the dominant factor governing FO membrane fouling as the decrease in viscosity did not always result in less fouling. The effect of divalent cations on the FO fouling behavior was also studied by adding CaCl2. The presence of calcium ions has exacerbated the flux decline, this occurred particularly for any combined organic foulants containing alginate, due to intermolecular bridging among alginate molecules. It is interesting to note that combined BSA + alginate caused moderate flux decline, while BSA and alginate alone did not cause any observable water flux loss. The (BSA + alginate) fouling became more severe with the presence of calcium ions. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Arkhangelsky, Elizabeth Wicaksana, Filicia Al-Rabiah, Abdulrahman A. Al-Zahrani, Saeed M. Wang, Rong |
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Article |
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Arkhangelsky, Elizabeth Wicaksana, Filicia Al-Rabiah, Abdulrahman A. Al-Zahrani, Saeed M. Wang, Rong |
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Arkhangelsky, Elizabeth |
title |
Understanding the interaction between biomacromolecules and their influence on forward osmosis process |
title_short |
Understanding the interaction between biomacromolecules and their influence on forward osmosis process |
title_full |
Understanding the interaction between biomacromolecules and their influence on forward osmosis process |
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Understanding the interaction between biomacromolecules and their influence on forward osmosis process |
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Understanding the interaction between biomacromolecules and their influence on forward osmosis process |
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understanding the interaction between biomacromolecules and their influence on forward osmosis process |
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2016 |
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https://hdl.handle.net/10356/82755 http://hdl.handle.net/10220/40307 |
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1681042444058099712 |