ORCID Profile
0000-0002-4686-4424
Current Organisation
The University of Auckland
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Elsevier BV
Date: 11-2005
Publisher: Springer Science and Business Media LLC
Date: 31-12-2015
Publisher: American Chemical Society (ACS)
Date: 04-05-2001
DOI: 10.1021/JE000176G
Publisher: Elsevier BV
Date: 09-2009
Publisher: Elsevier BV
Date: 02-2022
Publisher: American Chemical Society (ACS)
Date: 24-08-2010
DOI: 10.1021/ES101966M
Abstract: This study describes the application of a noninvasive direct microscopic observation method for characterizing fouling of a forward osmosis (FO) membrane. The effect of the draw solution concentration, membrane orientation, and feed spacer on FO fouling was systematically investigated in a cross-flow setup using latex particles as model foulant in the feedwater. Higher draw solution (DS) concentrations (and thus increased flux levels) resulted in dramatic increase in the surface coverage by latex particles, suggesting that the critical flux concept might be applicable even for the osmotically driven FO process. Under identical draw solution concentrations, the active-layer-facing-the-feed-solution orientation (AL-FS) experienced significantly less fouling compared to the alternative orientation. This may be explained by the lower water flux in AL-FS, which is consistent with the critical flux concept. The use of a feed spacer not only dramatically enhanced the initial flux of the FO membrane, but also significantly improved the flux stability during FO fouling. Despite such beneficial effects of using the feed spacer, a significant amount of particle accumulation was found near the spacer filament, suggesting further opportunities for improved spacer design. To the best of the authors' knowledge, this is the first direct microscopic observation study on FO fouling.
Publisher: Elsevier BV
Date: 05-2016
Publisher: Elsevier BV
Date: 11-2014
Publisher: Elsevier BV
Date: 03-2006
Publisher: Elsevier BV
Date: 11-2013
DOI: 10.1016/J.COLSURFB.2013.06.008
Abstract: Aquaporin-based biomimetic membranes have potential as promising membranes for water purification and desalination due to the exceptionally high water permeability and selectivity of aquaporins. However, the design and preparation of such membranes for practical applications are very challenging as the relevant fundamental research is rather limited to provide guidance. Here we investigated the basic characteristics and fusion behaviour of proteoliposomes incorporated with aquaporin Z (AqpZ) on to solid surfaces. This study is expected to offer a better understanding of the properties of proteoliposomes and the potential of the vesicle fusion technique. Our results show that after incorporation of AqpZ, the size and surface charge density of the proteoliposomes change significantly compared with those of liposomes. Although the liposome could easily form a supported lipid bilayer on silica via vesicle rupture, it is much more difficult for proteoliposomes to fuse completely into a bilayer on the same substrate. In addition, the fusion of proteoliposomes is further hindered as the density of incorporated AqpZ is increased, suggesting that proteoliposome with more proteins become more robust. However, both the liposome and proteoliposome have difficulty forming supported lipid bilayers on the surface of a polyelectrolyte layer even though it carries an opposite charge, indicating that the polymer may play an important role in stabilising vesicles. It was also observed that a high concentration of AqpZ could be incorporated into the 1,2-diphytanoyl-sn-glycero-3-phosphocholine (DPhPC) liposome even though its permeability decreased. These findings may provide some useful guidance for preparing such biomimetic membranes.
Publisher: Elsevier BV
Date: 02-2014
Publisher: American Chemical Society (ACS)
Date: 03-10-2012
DOI: 10.1021/IE3002183
Publisher: Elsevier BV
Date: 04-2014
Publisher: Elsevier BV
Date: 2014
Publisher: Elsevier BV
Date: 2012
Publisher: Elsevier BV
Date: 12-2021
Publisher: American Chemical Society (ACS)
Date: 27-03-2001
DOI: 10.1021/JE000382O
Publisher: Elsevier BV
Date: 05-2014
Publisher: Elsevier BV
Date: 06-2013
Publisher: Elsevier BV
Date: 2012
Publisher: American Chemical Society (ACS)
Date: 09-12-2001
DOI: 10.1021/JE0001431
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Filicia Wicaksana.