Characterization of Charged Membranes During Hyperfiltration: The Transport Numbers | Zendy

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Characterization of Charged Membranes During Hyperfiltration: The Transport Numbers

Author(s) -

Kedem O.

Publication year - 1973

Publication title -

israel journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.908

H-Index - 54

eISSN - 1869-5868

pISSN - 0021-2148

DOI - 10.1002/ijch.197300031

Subject(s) - chemistry , membrane , ionic bonding , characterization (materials science) , salt (chemistry) , ion , chemical engineering , nanotechnology , organic chemistry , biochemistry , materials science , engineering

A procedure for the measurement of ionic transport numbers, with the aid of current‐carrying electrodes that are introduced into a hyperfiltration cell is suggested. This procedure is suitable for adsorbed polymer layers and dynamic membranes. For membranes adequately described by the fixed charge model, allowing for ion‐association, a simple relation between transport numbers and salt rejection is derived. This leads to a test for the mechanism of salt rejection.

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