Re-entrainment of Particles from a Plane Surface

Monolayer and Multilayer Particle Deposits on Hard Surfaces: Literature Review and Implications for Particle Resuspension in the Indoor Environment

“…The results of the latter demonstrate that very high velocities, unrealistic of what would be found in the indoor environment, are required to resuspend significant quantities of coarse particles. Corn and Stein (1965) did not observe resuspension for 10.6 μm glass particles at 30, 60, and 90 m/s, and it was not until a velocity of 117 m/s that resuspension was reported, and Jiang et al (2008) found that velocities greater than 50 m/s were necessary to resuspend 11 μm poly(methyl methacrylate) (PMMA) particles. Additionally, a recent wind tunnel investigation by Goldasteh et al (in press) observed minimal resuspension for 1-10 μm dust particles from linoleum flooring for velocities below 18 m/s (resuspension fraction remained below 0.10).…”

“…Many monolayer studies have examined particles >10 μm in diameter, e.g., Braaten (1994) and Ibrahim et al (2003Ibrahim et al ( , 2004Ibrahim et al ( , 2008, which more easily resuspend compared to their smaller counterparts, and only a few studies, e.g., Corn and Stein (1965), Jiang et al (2008), and Goldasteh et al (in press), have examined particles near 10 μm in diameter. The results of the latter demonstrate that very high velocities, unrealistic of what would be found in the indoor environment, are required to resuspend significant quantities of coarse particles.…”

“…Additionally, air velocities over indoor surfaces may vary considerably, from air bursts associated with human movement to airflow in ventilation systems. Wind tunnel resuspension studies, such as those by Corn and Stein (1965), Wu et al (1992), Nicholson (1993), Braaten (1994), Ibrahim et al (2003Ibrahim et al ( , 2004Ibrahim et al ( , 2008, Jiang et al (2008), and Mukai et al (2009), among others, have demonstrated the important role of particle size and air velocity on resuspension from monolayer deposits. Generally, the amount of particles that resuspend from a surface increases with increasing particle size and air velocity.…”

“…Monolayer deposits were examined in studies on the aerodynamic resuspension of particles by Corn and Stein (1965), Wen and Kasper (1989), Braaten et al (1990), John et al (1991), Wu et al (1992), Taheri and Bragg (1992), Nicholson (1993), Braaten (1994), Otani et al (1995), Smedley et al (1999), Reeks and Hall (2001), Ziskind et al (2002), Ibrahim et al (2003), Ibrahim et al (2004), Miguel et al (2005), Ibrahim and Dunn (2006), Ibrahim et al (2008), Jiang et al (2008), Goldasteh et al (in press), and Kassab et al (2013). For these studies, dust loads are on the order of 10 −5 to 1 g/m 2 .…”

“…For monolayer deposits, we are primarily interested in particle-to-surface attractive forces. Monolayer resuspension is strongly influenced by particle size and air velocity (Corn and Stein 1965;Wu et al 1992;Nicholson 1993;Braaten 1994;Ibrahim et al 2003;Jiang et al 2008;Mukai et al 2009;Goldasteh et al in press), surface material and roughness (Wu et al 1992;Nicholson 1993;Gomes et al 832 B. E. BOOR ET AL.…”