A Lattice Boltzmann (LB) based reactive transport model intended to capture
reactions and solid phase changes occurring at the pore scale is presented. The proposed
approach uses LB method to compute multi component mass transport. The LB multicomponent
transport model is then coupled with the well-established geochemical reaction
code PHREEQC which solves for thermodynamic equilibrium in mixed aqueous-solid phase
system with homogenous and heterogeneous reactions. This coupling enables us to update
solid phases volumes based on dissolution or precipitation using static update rules which, on
pore scale, affects the change of potentially pore network geometry. Unlike conventional
approach, heterogeneous reactions are conceptualized as volumetric reactions by introducing
additional source term in the fluid node next to solid node, and not as flux boundaries. To
demonstrate the validity of this approach several examples are presented in this paper
