Premium
Movement of Water and Salt through a Clay‐Water System: Experimental Verification of Onsager Reciprocal Relation
Author(s) -
Letey J.,
Kemper W. D.
Publication year - 1969
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1969.03615995003300010012x
Subject(s) - reciprocal , salt (chemistry) , hydrostatic pressure , flux (metallurgy) , chemistry , salt water , osmotic pressure , thermodynamics , soil water , hydrostatic equilibrium , physics , soil science , geology , geotechnical engineering , philosophy , linguistics , quantum mechanics , biochemistry , organic chemistry
Equations that describe the movement of solution and salt through a soil system in which there are both hydrostatic and osmotic pressure gradients are presented. These equations are: J V = − L P ∇ P + L PD ∇π, J D = L DP ∇ P − L D ∇π, and J S /C S = (− L P + L DP ) ∇ P + (− L D + L PD ) ∇π where J V is the flux of solution, J D the difference in velocity between water and salt, J S is flux of salt, P is pressure, π is osmotic pressure, C S is the average solute concentration, and L is phenomenological coefficients. The Onsager reciprocal relation states that L PD = L DP . This relation was found to be valid for a clay‐water‐salt system.