Back to Search
Start Over
Asymmetric porous cordierite ceramic membranes prepared by phase inversion tape casting and their desalination performance.
- Source :
-
Ceramics International . Oct2020, Vol. 46 Issue 15, p23677-23685. 9p. - Publication Year :
- 2020
-
Abstract
- Asymmetric porous cordierite ceramic membranes were fabricated by phase inversion tape casting method. It is shown that the membranes consist of a relatively dense skin layer on the top, a sponge layer at the bottom and a finger-like layer in the middle. The membranes have a hierarchical pore structure, where macrovoids (denoted as dozens-micron-sized (DMS) pores) are present in the finger-like layer and micron-sized (MS) pores are located in the skin layer, sponge layer and the wall of macrovoids. After surface silylation by post-grafting with 1H,1H,2H,2H-perfluorodecyltriethoxysilane (FAS), the sample with a starting powder/polyethersulfone (PESf) weight ratio of 9 (M − 4) becomes hydrophobic, with a water contact angle of 150°. At a NaCl concentration of 3.5 wt%, a feed rate of 18L/h and a feed temperature of 80 °C, the hydrophobic M − 4 membrane exhibits a water permeate flux of 22.33 kg/m2h, which is considerably larger than that of the membranes prepared by dry pressing method previously, and a salt rejection of 99.9%. The higher water permeate flux is attributed to the much lower transport resistance of water vapor in the membranes of the present work. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TAPE casting
*ADHESIVE tape
*WATER vapor transport
*CONTACT angle
*SILYLATION
Subjects
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 46
- Issue :
- 15
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 145212984
- Full Text :
- https://doi.org/10.1016/j.ceramint.2020.06.141