Hyporheic zone reaction rates are highest just below the sediment-water interface, in a shallow region called benthic biolayer. Vertical variability of hyporheic leads to unexpected kinetics for stream-borne solutes, compared classical model predictions. We show that deeper, low-reactivity locations within retain solutes extended periods, which delays reactions and causes persist at higher conc...

Abstract Numerical simulations of reactive transport in fractured porous media require the solution coupled physical and chemical processes that depend on fractures. Such are described by a system nonlinear partial differential-algebraic equations, while strong heterogeneities characterise This paper presents an approach to simulate single-phase flow non-isothermal with mineral dissolution prec...

a simple mathematical model of steady state  oxygen distribution subject to diffusive transport and non- linear uptake in a retinal cylinder has been developed. the approximate analytical solution to a reaction- diffusion equation are obtained by using series expansions. the computational results for the scaled variables are presented through graphs. the effect of the important parameters (1) d...

In this work, a continuum 2D model is proposed to study the interaction at interface of reactive transport processes in porous media. The analysis segregation produced by poor reactant homogenization poral scale addressed parametric heuristic that considers relative gradient reacting species involved process. micro inhomogeneities are incorporated means longitudinal and transversal mechanical d...