Journal
DESALINATION
Volume 332, Issue 1, Pages 134-141Publisher
ELSEVIER
DOI: 10.1016/j.desal.2013.10.030
Keywords
Membrane distillation; Electrospinning; Nanocrystalline cellulose; Polyvinylidenefluoride-co-hexafluoropropylene (PVDF-HFP); Mechanical strength; Liquid entry pressure
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Polyvinylidenefluoride-co-hexafluoropropylene (PVDF-HFP) membranes containing different amounts of nanocrystalline cellulose (NCC) were fabricated by electrospining technique for application in membrane distillation (MD). The effect of incorporating NCC on the mechanical strength, morphology, pore size distribution, and liquid entry pressure (water) of the fibrous was investigated. Incorporation of NCC in PVDF-HFP matrix improved the tensile strength and Young's modulus and narrowed down the pore size distribution of the fabricated membranes. Liquid entry pressure, which is an important parameter to ensure high salt rejection of the membranes in MD, was improved from similar to 19 psi to similar to 27 psi with the addition of 2 wt.% NCC. Fabricated membranes were tested in direct contact membrane distillation (DCMD). MD operation data revealed water flux of 10.2-11.5 Lh(-1) M-2 with salt rejection of 99% for these NCC-incorporated membranes. (C) 2013 Elsevier B.V. All rights reserved.
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