Adhesion and Aerodynamic Resuspension of Fibrous Particles
Publication: Journal of Environmental Engineering
Volume 122, Issue 5
Abstract
Under a simplifying assumption of uncharged particles, the adhesion theory was used in conjunction with the boundary layer theory to derive an expression for the lower limit of velocity for the resuspension of fibrous particles from flat surfaces. The theory, albeit approximate, suggests that mineral fibers with diameters less than 9 μm diameter will not be resuspended by bulk air velocities less than 10 m/s. Since electrostatic forces, fiber orientation or high humidity will require a higher aerodynamic force to lift the fibers off a surface, this theoretical limit is conservative for environmental exposure considerations. The theoretical calculations were experimentally confirmed by observing the behavior of settled single fibers in turbulent air flow. The results of the theoretical analysis and the subsequent experimental confirmation suggests that the concerns about the aerodynamic resuspension of mineral fibers within a biologically significant size range are overstated.
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References
1.
Brodkey, R. S. (1967). The phenomena of fluid motions. Addison Wesley, Reading, Mass., 244–256.
2.
Burke, W. A., and Esmen, N. A.(1978). “The inertial behavior of fibers.”Amer. Ind. Hyg. Assoc. J., 39(5), 400–405.
3.
Cieplak, M., Smith, E. D., and Robbins, M. O.(1994). “Molecular origins of friction: the force on adsorbed layers.”Science, 265(5176), 1209–1214.
4.
Cleaver, J. W., and Yates, B.(1973). “Mechanism of detachment of colloidal particles from a flat substrate in a turbulent flow.”J. Colloid Interface Sci., 44(3), 464–474.
5.
Corn, M. (1966). “Adhesion of particles.”Aerosol science, C. N. Davies, ed., Academic Press, New York, N.Y., 359–392.
6.
Corn, M., and Stein, F.(1965). “Re-entrainment of particles from a plane surface.”Am. Ind. Hyg. Assoc. J., 26(4), 325–336.
7.
Corn, M., and Stein, F.(1966). “Adhesion of atmospheric dustfall particles to a glass slide.”Nature, 211(5044), 60–61.
8.
Dahneke, B.(1972). “The influence of flattening on the adhesion of particles.”J. Colloid and Interface Sci., 40(1), 1–13.
9.
Environmental Protection Agency (EPA).(1989). “40 CFR part 763 asbestos; manufacture, importation, processing, and distribution in commerce prohibitions—final rule.”Federal register, 54(132), 29460–29495.
10.
Esmen, N. A., and Erdal, S.(1990). “Human occupational and nonoccupational exposure to fibers.”Envir. Health Perspectives, 88, 261–268.
11.
Fletcher, B.(1976a). “The erosion of dust by an air flow.”J. Phys. D: Appl. Phys., 9, 913–924.
12.
Fletcher, B.(1976b). “The incipient motion of granular materials.”J. Phys. D: Appl. Phys., 9, 2471–2478.
13.
Hinds, W. C. (1982). Aerosol technology . John Wiley & Sons, Inc., New York, N.Y., 130.
14.
Jones, A. M., and Knudsen, J. G.(1961). “Drag coefficients at low Reynolds' numbers for flow past immersed bodies.”AIChE J., 7(3), 20–25.
15.
Kahn, R. A., and Esmen, N. A.(1988). “The deposition of fibers and spheres at the carina in excised lungs.”Proc., VIIth Int. Pneumoconiosis Conf. DHHS (NIOSH) Publ. No. 90–108, 1, 571–575.
16.
Kendall, K.(1994). “Adhesion: molecules and mechanics.”Science, 263(5154), 1720–1725.
17.
Lippmann, M.(1988). “Asbestos exposure indices.”Envir. Res., 46(1), 86–106.
18.
Phillips, M.(1980). “A force balance model for particle entrainment into a fluid stream.”J. Phys. D: Appl. Phys., 13, 221–233.
19.
Schlichting, H. (1960). Boundary layer theory, 4th Ed., McGraw Hill, New York, N.Y.
20.
U.S. Court of Appeals for the Third Circuit. (1990). “Robertson et al. v. Allied Signal et al. and Drauschak et al. v. Allied Signal et al. appeals 89–2123 and 89–2124, opinion by Circuit Judge Massmann.”U.S. Courts. G.M.C. Printing, Philadelphia, Pa.
21.
Vincent, J. H. (1989). Aerosol sampling . John Wiley and Sons, Inc. Chichester, U.K. 329.
22.
Vold, M. J.(1954). “Van der Walls' attraction between anisometric particles.”J. Colloid Sci., 9(4), 451–459.
23.
Zimon, A. D. (1980). Adhesion of dust and powder, 2nd Ed., Plenum, New York, N.Y.
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Copyright © 1996 American Society of Civil Engineers.
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Published online: May 1, 1996
Published in print: May 1996
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