Method for determining effective diffusivity of substances...

Details Method for determining effective diffusivity of substances... Method for determining effective diffusivity of substances...

2005-11-23

2010-06-29

Nguyen, Nam X (Department: 1795)

Electrolysis: processes, compositions used therein, and methods

Electrolytic analysis or testing

For organic compound

C205S793000, C429S145000

Reexamination Certificate

active

07744741

ABSTRACT:
The present invention provides a new method to obtain an effective diffusivity for a certain substance in solutions that diffuse through a porous material. The porous material initially separates two solutions that are different in concentration of the substance. The concentration gradient gives rise to diffusion through the porous material, The concentration change of the substance in the low-concentration compartment is detected through a measurement of the electrochemical impedance data. By means of the measurement, an effective diffusivity coefficient of the substance through the porous material is calculated.

REFERENCES:
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patent: 2005/0179449 (2005-08-01), Wooton et al.
Rocha, M. S.; Simoes-Moreira, J. R. A simple impedance method for determining ethanol and regular gasoline mixtures mass contnets, Fuel, 2005, vol. 84, pp. 447-452.

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