Adhesion of solid particles to gas bubbles. Part 1: Modelling

An acoustic technique for measurement of bubble solids mass loading – (a) Fundamental study of single bubble

“…The average thickness of multilayer attachment to a bubble is typically several times the particle size; and the coverage angle decreases as layer thickness increases (Omota et al, 2006b). A special case is when the cohesive forces are higher than the adhesive forces, and then the particle-liquid agglomerate clusters and can attach to the bubble through only a few particles.…”

“…For high particle surface hydrophobicity, the cohesive forces between particles exceed a certain limit and multilayer attachment occurs (Omota et al, 2006a). The average thickness of multilayer attachment to a bubble is typically several times the particle size; and the coverage angle decreases as layer thickness increases (Omota et al, 2006b).…”

Molecular dynamics simulation of complex multiphase flow on a computer cluster with GPUs

“…When the bubble contacts the solid grain again, the solid grain is not able to pass through the bubble owing to the restriction of the gas-liquid interfacial tension (Figure 8(e)), and the bubble moves along, attaching to the side wall. The movement is similar to the typical process of gas-solid attachment in flotation [23,24] , but it requires further analysis.…”

Airborne Legionella bacteria from pulp waste treatment plant: aerosol particles characterized as aggregates and their potential hazard

“…Aggregates containing Aerobiologia (2011) 27:147-162 157 large numbers of individual cells of various bacteria traveling in the harsh environment presumably protect each other from factors having an impact on their survival, and subsequently, this renders the aerosols much more infectious than if individual cells were transported (Lighthart and Shaffer 1997). Previous studies have reported that particle aggregates may enhance the survival of bacterial cells Omota et al 2006) perhaps countering the degrading effects of weather, such as UV degradation. The concentration levels of airborne legionellae may be lower in warm weather compared to cloudy and humid weather Sun and Ji 2007;Fisman et al 2005).…”