Calo, Victor M.
Nunes, Suzana Pereira
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Earth Science and Engineering Program
Environmental Science and Engineering Program
Nanostructured Polymeric Membrane Lab
Numerical Porous Media SRI Center (NumPor)
Office of the VP
Physical Science and Engineering (PSE) Division
Water Desalination and Reuse Research Center (WDRC)
Online Publication Date2016-06-06
Print Publication Date2016-10
Permanent link to this recordhttp://hdl.handle.net/10754/613001
MetadataShow full item record
AbstractWe 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.
Citation3D Morphology Design for Forward Osmosis 2016 Journal of Membrane Science
SponsorsThe authors thank Ms. Poornima Madhavan and Dr. Haizhou Yu for their valuable advice on the block copolymer membrane preparation. The research reported in this publication was sponsored by King Abdullah University of Science and Technology (KAUST).
JournalJournal of Membrane Science