Journal
DESALINATION
Volume 283, Issue -, Pages 64-67Publisher
ELSEVIER
DOI: 10.1016/j.desal.2011.02.046
Keywords
Carbon nanotube bucky-paper; Poly(tetra fluoro ethylene) composite; Membrane distillation; Desalination
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Funding
- CSIRO Materials Science and Engineering
- Victoria University
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Self-supporting bucky-papers membranes were processed from chemical vapour deposition grown carbon nanotubes and coated with a thin layer of poly(tetra-fluoro-ethylene) (PTFE) to enhance their hydrophobicity and improve their mechanical stability over time, without drastically changing their average pore size and porosity. Contact angles and bubble point pressure were respectively increased by 23% and 28%. After coating the membranes were tested in a direct contact membrane distillation setup at various feed temperatures with 35 g/L NaCl feed solution and coated samples exhibited improved lifespan and water vapour permeability at salt rejection higher than 99%. The bucky-paper membranes were also compared with commercial PTFE membranes of similar properties. (C) 2011 Elsevier B.V. All rights reserved.
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