AUTHOR=Salmi Tapio , Wärnå Johan , Tolvanen Pasi 

TITLE=Understanding of Solid-Fluid Kinetics and Mass Transfer: From Ideal to Non-ideal Models, From Perfect Spheres to Moon Landscape

JOURNAL=Frontiers in Chemical Engineering

VOLUME=Volume 2 - 2020

YEAR=2020

URL=https://www.frontiersin.org/journals/chemical-engineering/articles/10.3389/fceng.2020.00006

DOI=10.3389/fceng.2020.00006

ISSN=2673-2718

ABSTRACT=Throughout the decades, the solid-fluid processes have been modelled with the hypothesis of ideal, non-porous particles. Numerous relevant industrial reactions with reactive solids do not involve ideal slabs, spheres or cylinders, but instead the particles have rough surfaces comparable of the Moon with cracks and craters. The theory of non-ideal solid particles is briefly reviewed and the effect of the non-ideality is illustrated for batch processes. In general, surface roughness results in the increase of the apparent reaction with respect to the solid reactant.