On the nature of free and bound water in water permeation of cellulose acetate membranes in reverse osmosis

Desalination ◽  
1982 ◽  
Vol 42 (1) ◽  
pp. 57-61 ◽  
Author(s):  
Yoshihiro Ogawa ◽  
Sho Suzuki
Keyword(s):  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Bound Water ◽  
Water Permeation ◽  
Cellulose Acetate Membranes ◽  
Free And Bound Water

Effect of the structure of cellulose acetate membranes on their permeability, electrical conductivity and rejection

1990 ◽  
Vol 55 (12) ◽  
pp. 2933-2939 ◽  
Author(s):  
Hans-Hartmut Schwarz ◽  
Vlastimil Kůdela ◽  
Klaus Richau
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Water Flux ◽  
Cellulose Acetate Membrane ◽  
Structure Parameters ◽  
Dc Electrical Conductivity ◽  
Cellulose Acetate Membranes

Ultrafiltration cellulose acetate membrane can be transformed by annealing into reverse osmosis membranes (RO type). Annealing brings about changes in structural properties of the membranes, accompanied by changes in their permeability behaviour and electrical properties. Correlations between structure parameters and electrochemical properties are shown for the temperature range 20-90 °C. Relations have been derived which explain the role played by the dc electrical conductivity in the characterization of rejection ability of the membranes in the reverse osmosis, i.e. rRO = (1 + exp (A-B))-1, where exp A and exp B are statistically significant correlation functions of electrical conductivity and salt permeation, or of electrical conductivity and water flux through the membrane, respectively.

Permeability of phenol through cellulose acetate membranes by reverse osmosis in various alcoholic systems

1979 ◽  
Vol 24 (5) ◽  
pp. 1191-1203 ◽  
Author(s):  
Hiroshi Nomura ◽  
Manabu Senō ◽  
Hiroshi Takahashi ◽  
Takeo Yamabe
Keyword(s):  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Cellulose Acetate Membranes

Reduction of sulphate content in aqueous solutions by reverse osmosis using cellulose acetate membranes

Desalination ◽  
2004 ◽  
Vol 162 ◽  
pp. 55-60 ◽  
Author(s):  
Antonio Bódalo ◽  
José-Luis Gómez ◽  
Elisa Gómez ◽  
Gerardo León ◽  
María Tejera
Keyword(s):  
Aqueous Solutions ◽  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Sulphate Content ◽  
Cellulose Acetate Membranes

Study of the structure of asymmetric cellulose acetate membranes for reverse osmosis using electron spin resonance (ESR) method

Polymer ◽  
2001 ◽  
Vol 42 (15) ◽  
pp. 6479-6484 ◽  
Author(s):  
K.C. Khulbe ◽  
T. Matsuura ◽  
G. Lamarche ◽  
A.-M. Lamarche ◽  
C. Choi ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Electron Spin ◽  
Cellulose Acetate Membranes ◽  
Spin Resonance
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