Irreversible thermodynamics of transport processes through porous media composed of particles of different size
An experimental investigation on liquids transport through porous media is described. Porous diaphragms of pyrex glass particles, whose sizes were in three ranges, between 150 and 500 micrometers, as well as water, methyl-, ethyl-, and isopropyl alcohols have been used to perform the hydrodynamic and electroosmotic experiments. The hydrodynamic flow is linearly dependent of the pressure difference and independent on the direction of the flow. The dependence of L11 on the size of the particles forming the porous diaphragm agrees with that predicted by the classic theory of the electrokinetic phenomena. The electroosmotic coefficient L12 has been found to decrease as the particle size increases, this being verified for all the permeants used. This fact is explained on the basis of the Anderson and Koh's model. 31 references.
- OSTI ID:
- 5503398
- Journal Information:
- J. Colloid Interface Sci.; (United States), Vol. 82:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
POROUS MATERIALS
FLOW MODELS
THERMODYNAMICS
ALCOHOLS
FLUID FLOW
HYDRODYNAMICS
OSMOSIS
PARTICLE SIZE
PRESSURE GRADIENTS
WATER
DIFFUSION
FLUID MECHANICS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MATERIALS
MATHEMATICAL MODELS
MECHANICS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SIZE
020300* - Petroleum- Drilling & Production