Premium
A theoretical investigation on the transport of chemicals in reactive porous media
Author(s) -
Nguyen V. V.,
Gray W. G.,
Pinder G. F.,
Botha J. F.,
Crerar D. A.
Publication year - 1982
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr018i004p01149
Subject(s) - porous medium , axiom , diffusion , basis (linear algebra) , erosion , homogeneous , fluid dynamics , mechanics , thermodynamics , porosity , mathematics , geotechnical engineering , geology , physics , geometry , paleontology
This paper presents a general theoretical analysis of the transport problem of reactive chemical species in a class of statistically homogeneous porous media. Convection, diffusion, dispersion, erosion (or deposition), and reaction are included as the fundamental processes. A system of coupled kinetic operators representing the physicochemical interaction of fluid and solid phases together with the associated constitutive relations are derived using averaging theory and a set of constitutive axioms. A method of utilizing experimental information to obtain the chemical rate expressions is also presented. A practical application of the analysis is made to the investigation of the in situ mining of low‐grade uranium ores. An extension of the theory is suggested to form a rational basis for future investigation of sedimentary diagenesis.