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Highly stable hydrophobic SiNCO nanoparticle-modified silicon nitride membrane for zero-discharge water desalination.
- Source :
- AIChE Journal; Apr2017, Vol. 63 Issue 4, p1272-1277, 6p
- Publication Year :
- 2017
-
Abstract
- Membrane distillation water desalination can attain a significantly higher water recovery than reverse osmosis, while the lack of stable hydrophobic membranes limits its commercial applications. This article presents the preparation of a new hydrophobic membrane by modifying a porous Si<subscript>3</subscript>N<subscript>4</subscript> substrate with vesicular SiNCO nano-particles. The membrane had a water contact angle of 142°, due to the presence of -Si-CH<subscript>3</subscript> terminal groups and the high surface roughness. The contact angle remained nearly the same after exposures of the membrane to boiling water, aqueous solutions with pH ranging from 2 to 12, and benzene. The membrane exhibited satisfactory water desalination performance on highly concentrated NaCl solutions and simulated seawater. With the highly stable membrane, it is promising to develop a zero-discharge water desalination process for simultaneous production of fresh water for daily uses and brine for industrial uses. © 2016 American Institute of Chemical Engineers AIChE J, 63: 1272-1277, 2017 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00011541
- Volume :
- 63
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- AIChE Journal
- Publication Type :
- Academic Journal
- Accession number :
- 121921155
- Full Text :
- https://doi.org/10.1002/aic.15500