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Title: Supported clay membrane: A new way to characterize water and ion transport in clays
Authors: Kocherginsky, N.M. 
Stucki, J.W.
Keywords: Characterization
Clay membrane
Electrophysical properties
Ion transport
Water transport
Issue Date: May-2001
Citation: Kocherginsky, N.M., Stucki, J.W. (2001-05). Supported clay membrane: A new way to characterize water and ion transport in clays. Advances in Environmental Research 5 (2) : 197-201. ScholarBank@NUS Repository.
Abstract: The ability to characterize the diffusion of water and ions through soils and clays is a fundamental component in understanding the environmental processes and fate of pollutants. This note demonstrates that important physico-chemical aspects of these processes could be investigated using a very simple experimental system, based on a clay layer immobilized between two porous nitrocellulose filters. The properties of this three-layer membrane, separating two aqueous solutions, were characterized by membrane electrical conductivity and trans-membrane potential. Results revealed that the transport of aqueous salt solutions is characterized by at least two kinetic phases, fast and slow, both of which follow reversible first-order kinetics and in this aspect are similar to the results of batch or column experiments. © 2001 Elsevier Science Ltd.
Source Title: Advances in Environmental Research
ISSN: 10930191
DOI: 10.1016/S1093-0191(00)00051-4
Appears in Collections:Staff Publications

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