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dc.contributor.authorFrancis, Lijo
dc.contributor.authorGhaffour, NorEddine
dc.contributor.authorAmy, Gary L.
dc.description.abstractPoly(vinylidine fluoride) (PVDF) asymmetric hydrophobic hollow fibers were fabricated successfully using dryjet wet spinning. Hydrophobic silver nanoparticles were synthesized and impregnated into the PVDF polymer matrix and functionally graded PVDF-silver nanocomposite hollow fibers are fabricated and tested in the direct contact membrane distillation (DCMD) process. The as-synthesized silver nanoparticles were characterized for Transmission Electron Microscopy (TEM), particle size distribution (PSD) and Ultra Violet (UV) visible spectroscopy. Both the PVDF and PVDF-silver nanocomposite asymmetric hollow fibers were characterized for their morphology, water contact angle and mechanical strength. Addition of hydrophobic silver nanoparticles was found to enhance the hydrophobicity and ~ 2.5 fold increase the mechanical strength of the hollow fibers. A water vapor flux of 31.9kg m-2 h-1 was observed at a feed inlet temperature of 80 °C and at a permeate temperature of 20 °C in the case of hollow fiber membrane modules fabricated using PVDF hollow fibers; the water vapor flux was found to be increased by about 8% and to reach 34.6kg m-2 h-1 for the hollow fiber membrane modules fabricated from the PVDF-silver nanocomposite hollow fibers at the same operating conditions with 99.99% salt rejection.
dc.publisherAmerican Scientific Publishers
dc.rightsIf the article has been prepared by an employee within the duration of his or her employment, the employer reserves the right to make copies of the Work in print format for its own internal use or for promotional purposes only provided that proper reference is made to the original source of publication and to the Publisher. See:
dc.subjectHollow fiber membranes
dc.subjectMechanical strength
dc.subjectMembrane distillation
dc.subjectPermeation flux
dc.subjectSilver nanoparticles
dc.titleFabrication and characterization of functionally graded poly(vinylidine fluoride)-silver nanocomposite hollow fibers for sustainable water recovery
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalScience of Advanced Materials
kaust.personFrancis, Lijo
kaust.personGhaffour, Noreddine
kaust.personAmy, Gary L.

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