Development of thin film composite membranes for osmotically driven membrane processes

Park, Myoung Jun

Development of thin film composite membranes for osmotically driven membrane processes

Park, Myoung Jun

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Publication Type:: Thesis
Issue Date:: 2018

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Field	Value	Language
dc.contributor.author	Park, Myoung Jun
dc.date.accessioned	2019-01-11T00:41:57Z
dc.date.available	2019-01-11T00:41:57Z
dc.date.issued	2018
dc.identifier.uri	http://hdl.handle.net/10453/129459
dc.description	University of Technology Sydney. Faculty of Engineering and Information Technology.	en_AU
dc.description.abstract	Osmotically driven membrane processes nowadays have gained attention in research area as well as for industry application due to their high potential in providing sustainable solutions for clean water and clean energy by forward osmosis (FO) and pressure retarded osmosis (PRO) processes, respectively. However, one of the major issues of these membrane processes is severe internal concentration polarization (ICP) occurring in the membrane support layer which limits the osmotic driving force. Therefore, membrane support layer of thin film composite membranes for engineered osmosis need to be carefully designed with highly porosity, hydrophilic property and low tortuosity to mitigate ICP effect. To improve osmosis membrane performance, in this study, different types of membrane substrates were prepared and modified using various techniques such as an incorporation of graphene oxide nanomaterial, surface modification with polyvinyl alcohol coating and dual-layered hydrophilic/hydrophobic nanofiber membranes via a coaxial electrospinning. Experiment results revealed that hydrophilic modifications of membrane support layers for thin film composite membranes have high potential in improving engineered osmosis performance.	en_AU
dc.format	Thesis (PhD)
dc.language.iso	en_AU	en_AU
dc.relation	https://opus.lib.uts.edu.au/bitstream/10453/129459/2/02whole.pdf
dc.rights	The author owns the copyright in this thesis including all reproduction and reuse rights for the work. The work may not be altered without the permission of the copyright owner. Attribution is essential when quoting or paraphrasing from this thesis.
dc.rights	au.edu.uts.lib/ppc
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	thin film composite membranes
dc.subject	pressure retarded osmosis
dc.subject	internal concentration polarization
dc.subject	forward osmosis
dc.subject	driving force
dc.title	Development of thin film composite membranes for osmotically driven membrane processes	en_AU
dc.type	Thesis	en_AU
utslib.copyright.status	open_access

Abstract:

Osmotically driven membrane processes nowadays have gained attention in research area as well as for industry application due to their high potential in providing sustainable solutions for clean water and clean energy by forward osmosis (FO) and pressure retarded osmosis (PRO) processes, respectively. However, one of the major issues of these membrane processes is severe internal concentration polarization (ICP) occurring in the membrane support layer which limits the osmotic driving force. Therefore, membrane support layer of thin film composite membranes for engineered osmosis need to be carefully designed with highly porosity, hydrophilic property and low tortuosity to mitigate ICP effect. To improve osmosis membrane performance, in this study, different types of membrane substrates were prepared and modified using various techniques such as an incorporation of graphene oxide nanomaterial, surface modification with polyvinyl alcohol coating and dual-layered hydrophilic/hydrophobic nanofiber membranes via a coaxial electrospinning. Experiment results revealed that hydrophilic modifications of membrane support layers for thin film composite membranes have high potential in improving engineered osmosis performance.

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