Title: Neutralization of Acid Mine Drainage   Presenter: Mario Primicerio – University of Florence Abstract: We present a mathematical model for the flow of an acid solution through a reacting porous medium. The solid matrix is supposed to be formed by families of spheres with different radii and the fluid…

Singular Shocks in a Chromatography Model: Singular Perturbation Theory and Geometric Insight   Barbara Lee Keyfitz Department of Mathematics, The Ohio State University bkeyfitz@math.ohio-state.edu   A standard model for two-component chromatographic separation provides a well-known example of a system of two hyperbolic conservation laws (quasilinear hyperbolic partial dierential equations) in…