Thin-film nanocomposite membrane with vertically embedded carbon nanotube for forward osmosis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00243281" target="_blank" >RIV/68407700:21220/16:00243281 - isvavai.cz</a>
Result on the web
<a href="http://www.tandfonline.com/doi/full/10.1080/19443994.2016.1190110" target="_blank" >http://www.tandfonline.com/doi/full/10.1080/19443994.2016.1190110</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/19443994.2016.1190110" target="_blank" >10.1080/19443994.2016.1190110</a>

Result language
angličtina
Original language name
Thin-film nanocomposite membrane with vertically embedded carbon nanotube for forward osmosis
Original language description
Forward osmosis (FO) for desalination is receiving tremendous attention due to its low energy consumption and simple operation compared to reverse osmosis. Here, we propose a thin-film nanocomposite (TFN) membrane with vertically embedded carbon nanotubes (CNTs) in the active layer to maximize membrane permeability without significantly sacrificing selectivity. We first attempted a spray-assisted electromagnetic field alignment technique to vertically embed CNT in the active layer of the TFN membrane. After vertically embedding the CNT, the developed TFN membrane exhibited 20% increased water flux. When chemical etching of the active layer was further applied, increase in water flux was over 300% (40 LMH). Meanwhile, the increased reverse salt flux was mild most likely due to the steric effect of CNT in the active layer. The developed TFN membrane, thus showed even higher water flux and lower reverse salt flux when compared to recently provided commercial FO membranes. This method is easy to up-scale with a one-step fabrication process, and it is cost-effective due to its simplicity and the low concentration of CNT solution used. Therefore, these findings could contribute to freshwater production using the FO process to overcome global water scarcity.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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