Osmotic properties of a modified cellulose acetate membrane: The reflection coefficient and its dependence on the volume flow history

The main objective of this work has been to study the performance of membranes developed for treating purified wastewater. Polymeric membranes have been developed from solutions containing cellulose acetate (AC) and polysulfone (PSF), using N,N-dimethylformamide (DMF) as solvent and polyethylene glycol (PEG) as additive. The phase inversion method was chosen as a technique for producing the membrane films. The incorporation of PEG allowed us to study the effect of the additive on the morphological structure, and to predict the performance of the membranes formed. Examining the flux, permeability and selectivity of the membranes allowed studying the efficiency and performance of each membrane. The application results achieved in wastewater treatment at Chenoua/TIPAZA station were very satisfactory and in accordance with the standards required by WHO. The optimal performance, in terms of permeability and selectivity, was obtained for the MC membrane with the composition: PSF/PEG/AC of 25/12/63.

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Chemically modified cellulose acetate membrane for biosensor applications

Biosensors ◽

10.1016/0265-928x(89)80001-x ◽

1989 ◽

Vol 4 (6) ◽

pp. 349-359 ◽

Cited By ~ 16

Author(s):

Hari Gunasingham ◽

Peter Y.T. Teo ◽

Yee-Hing Lai ◽

Swee-Geok Tan

Keyword(s):

Cellulose Acetate ◽

Cellulose Acetate Membrane ◽

Chemically Modified ◽

Biosensor Applications ◽

Modified Cellulose

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Pharmaceutical and personal care products removal from drinking water by modified cellulose acetate membrane: Field testing

Chemical Engineering Journal ◽

10.1016/j.cej.2013.04.050 ◽

2013 ◽

Vol 225 ◽

pp. 848-856 ◽

Cited By ~ 31

Author(s):

Roberto M. Narbaitz ◽

Dipak Rana ◽

Huyen T. Dang ◽

Jordan Morrissette ◽

Takeshi Matsuura ◽

...

Keyword(s):

Drinking Water ◽

Cellulose Acetate ◽

Personal Care Products ◽

Field Testing ◽

Cellulose Acetate Membrane ◽

Personal Care ◽

Modified Cellulose

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Physicochemical characterization of a modified cellulose acetate membrane for the design of oil-in-water emulsion disruption devices

Journal of Membrane Science ◽

10.1016/j.memsci.2007.11.031 ◽

2008 ◽

Vol 310 (1-2) ◽

pp. 446-454 ◽

Cited By ~ 5

Author(s):

R. Barbar ◽

A. Durand ◽

J.J. Ehrhardt ◽

J. Fanni ◽

M. Parmentier

Keyword(s):

Cellulose Acetate ◽

Physicochemical Characterization ◽

Cellulose Acetate Membrane ◽

Water Emulsion ◽

Oil In Water ◽

Oil In Water Emulsion ◽

Modified Cellulose

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

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19902933 ◽

1990 ◽

Vol 55 (12) ◽

pp. 2933-2939 ◽

Cited By ~ 1

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.

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