Carbon nanotube based composite membranes for water desalination by membrane distillation

Dumee, Ludovic, Sears, Kallista, Schutz, Jurg, Finn, Niall, Duke, Mikel and Gray, Stephen 2010, Carbon nanotube based composite membranes for water desalination by membrane distillation, Desalination and water treatment, vol. 17, no. 1-3, pp. 72-79.

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Title Carbon nanotube based composite membranes for water desalination by membrane distillation
Author(s) Dumee, Ludovic
Sears, Kallista
Schutz, Jurg
Finn, Niall
Duke, Mikel
Gray, Stephen
Journal name Desalination and water treatment
Volume number 17
Issue number 1-3
Start page 72
End page 79
Total pages 8
Publisher Balaban Publishers
Place of publication Hopkinton, Mass.
Publication date 2010
ISSN 1944-3994
1944-3986
Keyword(s) desalination
nanotube
bucky-paper
composite material
membrane distillation
Summary New technologies are required to improve desalination efficiency and increase water treatment capacities. One promising low energy technique to produce potable water from either sea or sewage water is membrane distillation (MD). However, to be competitive with other desalination processes, membranes need to be designed specifically for the MD process requirements. Here we report on the design of carbon nanotube (CNT) based composite material membranes for direct contact membrane distillation (DCMD). The membranes were characterized and tested in a DCMD setup under different feed temperatures and test conditions. The composite CNT structures showed significantly improved performance compared to their pure self-supporting CNT counterparts. The best composite CNT membranes gave permeabilities as high as 3.3 x 10-12 kg/(m x s x Pa) with an average salt rejection of 95% and lifespan of up to 39 h of continuous testing, making them highly promising candidates for DCMD.
Language eng
Field of Research 090404 Membrane and Separation Technologies
090410 Water Treatment Processes
100701 Environmental Nanotechnology
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30054715

Document type: Journal Article
Collection: Institute for Frontier Materials
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