Microporous silica based membranes for desalination

Elma, Muthia, Yacou, Christelle, Wang, David K., Smart, Simon and da Costa, Joao C. Diniz (2012) Microporous silica based membranes for desalination. Water, 4 3: 629-649. doi:10.3390/w4030629


Author Elma, Muthia
Yacou, Christelle
Wang, David K.
Smart, Simon
da Costa, Joao C. Diniz
Title Microporous silica based membranes for desalination
Journal name Water   Check publisher's open access policy
ISSN 2073-4441
Publication date 2012-09-01
Year available 2012
Sub-type Critical review of research, literature review, critical commentary
DOI 10.3390/w4030629
Open Access Status DOI
Volume 4
Issue 3
Start page 629
End page 649
Total pages 21
Place of publication Basel, Switzerland
Publisher M D P I AG
Language eng
Abstract This review provides a global overview of microporous silica based membranes for desalination via pervaporation with a focus on membrane synthesis and processing, transport mechanisms and current state of the art membrane performance. Most importantly, the recent development and novel concepts for improving the hydro-stability and separating performance of silica membranes for desalination are critically examined. Research into silica based membranes for desalination has focussed on three primary methods for improving the hydro-stability. These include incorporating carbon templates into the microporous silica both as surfactants and hybrid organic-inorganic structures and incorporation of metal oxide nanoparticles into the silica matrix. The literature examined identified that only metal oxide silica membranes have demonstrated high salt rejections under a variety of feed concentrations, reasonable fluxes and unaltered performance over long-term operation. As this is an embryonic field of research several target areas for researchers were discussed including further improvement of the membrane materials, but also regarding the necessity of integrating waste or solar heat sources into the final process design to ensure cost competitiveness with conventional reverse osmosis processes.
Keyword Desalination
Pervaporation
Microporous silica
Metal oxide silica
Hybrid silica
Carbon template silica
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID DP110101185
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: School of Chemical Engineering Publications
Official 2013 Collection
 
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