Application of Positron Emission Particle Tracking (PEPT) to measure the bubble-particle interaction in a turbulent and dense flow

Hydrodynamic characterisation of flotation impeller designs using Positron Emission Particle Tracking (PEPT)

“…This could be driven by the rise of bubble-particle aggregates into the froth zone by flotation, but it is not possible to support this claim only with these PEPT data, as attachment and detachment identification were out of the scope of this research. Further information on the use of PEPT for particle-1000 bubble attachment detection in a turbulent flow can be found in Sommer et al (2020).…”

“…Some studies have focused on the particle dynamics in different flotation equipment, such as a batch Denver cell (Waters et al, 2008), the motion of particles in a quasi-2D foam column (Cole et al, 2010) and the hydrodynamics of a fluidised bed flotation device for coarse particles flotation (Morrison et al, 2019). Recent studies have focused on more fundamental flotation and PEPT-related phenomena, such as particle velocity distributions (Cole et al, 2019), bubble-particle interaction (Sommer et al, 2020) and the use of direct mineral tracer activation for flotation studies with small particles (Boucher et al, 2017).…”

Characterisation of solid hydrodynamics in a three-phase stirred tank reactor with positron emission particle tracking (PEPT)

“…Later works utilised tracer particles radiolabelled by the technique of direct activation [28], enabling the tracking of fine mineral particles with a modular camera design with high detection efficiency [38,39]. Recently PEPT was used to observe interactions between a particle and a bubble in a turbulent flow cell [40] however the low frequency of bubble and particle collisions produced limited data on attachment.…”

Analysis of current trends in introverted design: Changing the extraverted paradigm

“…It is expedient to remember the research of Sommer et al (2020), who proposed the concept of a "spatial bubble" which is an invisible sphere around a person, the intrusion into which he perceives painfully. Such a spatial sphere is greater in northern peoples, introverts, and less in representatives of southern regions, extroverts (Wettstein et al, 2018).…”