Synthesis and characterisation of MWNT/chitosan and MWNT/chitosan-crosslinked buckypaper membranes for desalination

Alshahrani, AA; Al-Zoubi, H; Nghiem, LD; in het Panhuis, M

Synthesis and characterisation of MWNT/chitosan and MWNT/chitosan-crosslinked buckypaper membranes for desalination

Alshahrani, AA Al-Zoubi, H Nghiem, LD

in het Panhuis, M

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Publication Type:: Journal Article
Citation:: Desalination, 2017, 418 pp. 60 - 70
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Alshahrani, AA	en_US
dc.contributor.author	Al-Zoubi, H	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.contributor.author	in het Panhuis, M	en_US
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	Desalination, 2017, 418 pp. 60 - 70	en_US
dc.identifier.issn	0011-9164	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125039
dc.description.abstract	© 2017 Elsevier B.V. Novel buckypaper (BP) membranes for nanofiltration application were fabricated from multi-walled carbon nanotubes (MWNT) and biopolymer containing quaternary amine groups (chitosan and chitosan-crosslinked by in-situ amine crosslinking). Characteristics of the BP membranes were systematically characterized in terms of mechanical (tensile strengths varied between 49 ± 4 and 59 ± 3 MPa) and electrical properties (60 ± 1 to 70 ± 1 S/cm), contact angle (76 ± 3° to 102 ± 3°), surface morphology, membrane swelling, pore size, surface charge, solubility, water permeability (ranging from 019 ± 0.01 to 0.87 ± 0.03 L m− 2 h− 1 bar− 1), and salts rejection (80–95% for MgCl2, 21–63% for NaCl, 18–37% for MgSO4 and 6–14% for Na2SO4). These BP membranes were able to sustain up to 18 bar of pressure. Their properties were significantly affected by the type of biopolymer modifiers. The highest water permeability was obtained with the MWNT/chitosan BP membrane, while the MWNT/chitosan-crosslinked membranes showed the best salt rejection performance. In addition, separation performance by these membranes appeared to be governed by the unhydrated radii of these inorganic salts.	en_US
dc.relation.ispartof	Desalination	en_US
dc.relation.isbasedon	10.1016/j.desal.2017.05.031	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Synthesis and characterisation of MWNT/chitosan and MWNT/chitosan-crosslinked buckypaper membranes for desalination	en_US
dc.type	Journal Article
utslib.citation.volume	418	en_US
utslib.for	0301 Analytical Chemistry	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	418	en_US

Abstract:

© 2017 Elsevier B.V. Novel buckypaper (BP) membranes for nanofiltration application were fabricated from multi-walled carbon nanotubes (MWNT) and biopolymer containing quaternary amine groups (chitosan and chitosan-crosslinked by in-situ amine crosslinking). Characteristics of the BP membranes were systematically characterized in terms of mechanical (tensile strengths varied between 49 ± 4 and 59 ± 3 MPa) and electrical properties (60 ± 1 to 70 ± 1 S/cm), contact angle (76 ± 3° to 102 ± 3°), surface morphology, membrane swelling, pore size, surface charge, solubility, water permeability (ranging from 019 ± 0.01 to 0.87 ± 0.03 L m− 2 h− 1 bar− 1), and salts rejection (80–95% for MgCl2, 21–63% for NaCl, 18–37% for MgSO4 and 6–14% for Na2SO4). These BP membranes were able to sustain up to 18 bar of pressure. Their properties were significantly affected by the type of biopolymer modifiers. The highest water permeability was obtained with the MWNT/chitosan BP membrane, while the MWNT/chitosan-crosslinked membranes showed the best salt rejection performance. In addition, separation performance by these membranes appeared to be governed by the unhydrated radii of these inorganic salts.

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http://hdl.handle.net/10453/125039