Multiobjective Optimization Applied to the Integration of Polyamide and Cellulose Acetate Reverse Osmosis Membranes in Hybrid Cascades for Ultrapurification of Wet Chemicals

2015 ◽  
Vol 54 (3) ◽  
pp. 1006-1014
Author(s):  
R. Abejón ◽  
A. Garea ◽  
A. Irabien
Keyword(s):  
Multiobjective Optimization ◽  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Reverse Osmosis Membranes

Dry cellulose acetate (CA) Reverse osmosis membranes reinforced with polyester fabric and cast by machine

Desalination ◽  
1986 ◽  
Vol 58 (2) ◽  
pp. 169
Author(s):  
Liu Yu-rong ◽  
Lang Kang-min ◽  
Chen Yi-ming ◽  
Cai Bang-xiao
Keyword(s):  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Polyester Fabric ◽  
Reverse Osmosis Membranes

Modification of cellulose acetate reverse osmosis membranes by radiation grafting

1973 ◽  
Vol 17 (3) ◽  
pp. 809-820 ◽  
Author(s):  
J. M. Bentvelzen ◽  
F. Kimura-Yeh ◽  
H. B. Hopfenberg ◽  
V. Stannett
Keyword(s):  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Radiation Grafting ◽  
Reverse Osmosis Membranes

Rejection of Alkyl Phenols by Reverse Osmosis Membranes

1987 ◽  
Vol 19 (5-6) ◽  
pp. 967-979 ◽  
Author(s):  
C. Frik Schutte ◽  
Georges Belfort
Keyword(s):  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Aromatic Polyamide ◽  
Cellulose Acetate Membrane ◽  
Transient Diffusion ◽  
Alkyl Phenols ◽  
Polyamide Membrane ◽  
High Rejection ◽  
Very High ◽  
Reverse Osmosis Membranes

The removal of different alkyl phenols by two commercially available reverse osmosis membranes, one cellulose acetate and one aromatic polyamide both with very high rejection of NaCℓ was investigated. The polyamide membrane rejected phenol very effectively while the cellulose acetate membrane showed virtually no phenol rejection. In order to explain these differences a study was made of the mechanisms of phenol rejection by the two membranes. Transient diffusion tests as well as partitioning tests were conducted in addition to the reverse osmosis experiments. From the results it is concluded that phenol is sorbed in both membranes and that the forces of attraction between phenol and cellulose acetate are relatively weak compared to the attraction between phenol and polyamide resulting in a faster rate of diffusion in cellulose acetate and hence poor rejection.

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