Highly stable hydrophobic SiNCO nanoparticle-modified silicon nitride membrane for zero-discharge water desalination
| Autor: | Jian Qiang Gu, Chu Sheng Chen, Lin Li, Huanting Wang, Simeon Agathopoulos, Ming Ye Yang, Xin Xu, Jun-Wei Wang |
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| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Aqueous solution Chromatography Materials science General Chemical Engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Membrane distillation 01 natural sciences 0104 chemical sciences Contact angle Brine Membrane Chemical engineering Thin-film composite membrane Boiling 0210 nano-technology Reverse osmosis Biotechnology |
| Zdroj: | AIChE Journal. 63:1272-1277 |
| ISSN: | 0001-1541 |
| DOI: | 10.1002/aic.15500 |
| Popis: | 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 paper presents the preparation of a new hydrophobic membrane by modifying a porous Si3N4 substrate with vesicular SiNCO nano-particles. The membrane had a water contact angle of 142°, due to the presence of -Si-CH3 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. This article is protected by copyright. All rights reserved. |
| Databáze: | OpenAIRE |
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