Pore‐scale simulation of biomass growth along the transverse mixing zone of a model two‐dimensional porous medium

摘要: [1] The success of in situ bioremediation projects depends on the mixing contaminants and nutrients presence microbes. In this work, a pore-scale model is developed to simulate biomass growth that controlled by an electron donor acceptor. A homogeneous packing cylinders representing solid grains used as two-dimensional porous medium. The system initially seeded with microbes computational cells located at grain-water interfaces. solutes enter completely unmixed; each solute input over one half inlet boundary. Solute molecular diffusion transverse flow direction, are biotransformed according dual Monod kinetics only where present. Simulation requires calculation water field well transport reaction solutes. lattice Boltzmann method obtain field. Transport modeled finite volume discretization advection-diffusion-reaction equation. Biomass allowed grow spread means cellular automata algorithm. Model parameters systematically varied understand their effects development. Base case parameter values obtained from batch experiments reported literature modified achieve agreement between simulation results previously micromodel experimental results. most significant mechanisms control development shear strength new degradation rates. achieves good qualitative