Precipitation reaction flows in microscale geometries

Precipitation reactions are of constant interest to research because of their importance in nature and in industry. In this study, we
present a precipitation Reaction-Diffusion-Advection system using a CaCO3 forming reaction by injecting one reactant solution
into the initially stagnant second reactant solution. We studied the resulting precipitate reactive flow system both from a
microscopic and a macroscopic point of view. We identified three different flow regimes depending on the flow conditions and
chemical system: a particle-laden regime, a clogging regime and a gelation regime. The results are a basis for further investigation
and improvement of such displacements in technological applications.