Improvement of forward osmosis flux performance using combined piezoelectric and DMAPS surface treatment method
Water scarcity is a growing problem in many regions around the world and Singapore is not excluded. To help curb this issue, many technologies and methods have been developed and implemented. Recent developments and studies have identified forward osmosis (FO) process as a robust and viable technolo...
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sg-ntu-dr.10356-449072023-03-04T18:48:58Z Improvement of forward osmosis flux performance using combined piezoelectric and DMAPS surface treatment method Wu, Zong Tang. Yang Chun, Charles School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering Water scarcity is a growing problem in many regions around the world and Singapore is not excluded. To help curb this issue, many technologies and methods have been developed and implemented. Recent developments and studies have identified forward osmosis (FO) process as a robust and viable technology for water desalination due to its high water recovery rate, high contaminants rejection and lower energy requirement as compared to current RO desalination process. However, a much lower flux is obtained over time because of the concentration polarization effect in a FO process.To lower this concentration polarization effect, two methods of enhancement based on previous study were implemented on FO membranes to identify their repeatability and compatibility when they are implemented together. One method involved the use of zwitterionic dimethylethylethylammoniumpropane sulfonate (DMAPS) to modify hydrophilicity of the FO membranes. The other method includes the incorporation of Piezolectric Zirconate Titanate (PZT) unit on FO membrane to lower the concentration polarization effect. These project experiments were carried out in continuous process at different NaCl draw concentrations and at optimum settings / conditions that was identified by previous study. Bachelor of Engineering (Mechanical Engineering) 2011-06-07T01:09:50Z 2011-06-07T01:09:50Z 2011 2011 Final Year Project (FYP) http://hdl.handle.net/10356/44907 en Nanyang Technological University 99 p. application/pdf |
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DRNTU::Engineering::Mechanical engineering Wu, Zong Tang. Improvement of forward osmosis flux performance using combined piezoelectric and DMAPS surface treatment method |
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Water scarcity is a growing problem in many regions around the world and Singapore is not excluded. To help curb this issue, many technologies and methods have been developed and implemented. Recent developments and studies have identified forward osmosis (FO) process as a robust and viable technology for water desalination due to its high water recovery rate, high contaminants rejection and lower energy requirement as compared to current RO desalination process. However, a much lower flux is obtained over time because of the concentration polarization effect in a FO process.To lower this concentration polarization effect, two methods of enhancement based on previous study were implemented on FO membranes to identify their repeatability and compatibility when they are implemented together. One method involved the use of zwitterionic dimethylethylethylammoniumpropane sulfonate (DMAPS) to modify hydrophilicity of the FO membranes. The other method includes the incorporation of Piezolectric Zirconate Titanate (PZT) unit on FO membrane to lower the concentration polarization effect. These project experiments were carried out in continuous process at different NaCl draw concentrations and at optimum settings / conditions that was identified by previous study. |
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Yang Chun, Charles |
author_facet |
Yang Chun, Charles Wu, Zong Tang. |
format |
Final Year Project |
author |
Wu, Zong Tang. |
author_sort |
Wu, Zong Tang. |
title |
Improvement of forward osmosis flux performance using combined piezoelectric and DMAPS surface treatment method |
title_short |
Improvement of forward osmosis flux performance using combined piezoelectric and DMAPS surface treatment method |
title_full |
Improvement of forward osmosis flux performance using combined piezoelectric and DMAPS surface treatment method |
title_fullStr |
Improvement of forward osmosis flux performance using combined piezoelectric and DMAPS surface treatment method |
title_full_unstemmed |
Improvement of forward osmosis flux performance using combined piezoelectric and DMAPS surface treatment method |
title_sort |
improvement of forward osmosis flux performance using combined piezoelectric and dmaps surface treatment method |
publishDate |
2011 |
url |
http://hdl.handle.net/10356/44907 |
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1759853454740684800 |