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Increasing the Performance of Vacuum Membrane Distillation Using Micro-Structured Hydrophobic Aluminum Hollow Fiber Membranes.

Authors :
Chia-Chieh Ko
Chien-Hua Chen
Yi-Rui Chen
Yu-Hsun Wu
Soon-Chien Lu
Fa-Chun Hu
Chia-Ling Li
Kuo-Lun Tung
Source :
Applied Sciences (2076-3417); Apr2017, Vol. 7 Issue 4, p357, 10p
Publication Year :
2017

Abstract

This study develops a micro-structured hydrophobic alumina hollow fiber with a high permeate flux of 60 Lm<superscript>-2</superscript>h<superscript>-1</superscript> and salt rejection over 99.9% in a vacuum membrane distillation process. The fiber is fabricated by phase inversion and sintering, and then modified with fluoroalkylsilanes to render it hydrophobic. The influence of the sintering temperature and feeding temperature in membrane distillation (MD) on the characteristics of the fiber and MD performance are investigated. The vacuum membrane distillation uses 3.5 wt% NaCl aqueous solution at 70 °C at 0.03 bar. The permeate flux of 60 Lm<superscript>-2</superscript>h<superscript>-1</superscript> is the highest, compared with reported data and is higher than that for polymeric hollow fiber membranes. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20763417
Volume :
7
Issue :
4
Database :
Complementary Index
Journal :
Applied Sciences (2076-3417)
Publication Type :
Academic Journal
Accession number :
122766243
Full Text :
https://doi.org/10.3390/app7040357