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3D morphology design for forward osmosis

Abstract:
We propose a multi-scale simulation approach to model forward osmosis (FO) processes using substrates with layered homogeneous morphology. This approach accounts not only for FO setup but also for detailed microstructure of the substrate using the digitally reconstructed morphology. We fabricate a highly porous block copolymer membrane, which has not been explored for FO heretofore, and use it as the substrate for interfacial polymerization. The substrate has three sub-layers, namely a top layer, a sponge-like middle layer, and a nonwoven fabric layer. We generate a digital microstructure for each layer, and verify them with experimental measurements. The permeability and effective diffusivity of each layer are computed based on their virtual microstructures and used for FO operation in cross-flow setups at the macro-scale. The proposed simulation approach predicts accurately the FO experimental data.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.memsci.2016.05.061

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author


Publisher:
Elsevier
Journal:
Journal of Membrane Science More from this journal
Volume:
516
Pages:
172-184
Publication date:
2016-06-06
Acceptance date:
2016-05-31
DOI:
EISSN:
1873-3123
ISSN:
0376-7388


Keywords:
Pubs id:
pubs:673183
UUID:
uuid:4c88ac89-ac30-49da-b264-97fbcdcec0c9
Local pid:
pubs:673183
Source identifiers:
673183
Deposit date:
2018-01-16

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