PEPT is a technique used to non-invasively measure particle behaviour in flowing and granular systems and can track a tracer particle moving at speeds of up to 10 m/s to location uncertainties lower than 1 mm.
In our radiochemistry laboratory, we fabricate tracer particles labelled with the positron emitting radionuclides 68Ga and 18F with controllable physical and chemical properties such as size, shape, density and hydrophobicity.
The kinematic and residence time data from the motion of a tracer particle can offer insight into the efficiency of industrial processes and provide experimental data to validate fundamentally based models. Recent applications that have benefited from PEPT measurements at PEPT Cape Town include mineral processing, petroleum geology, and mixing. We investigate the fundamental behaviour of dynamic processes, and often make measurements of systems with harsh conditions such as high pressures, temperatures, shear rates, and dense multiphase slurries.
View our recent publications and other PEPT articles.