Abstract
Bacterial deposition–transportation via a porous medium can be quantified by a dimensionless Tabor's parameter, μ, which accounts for the deformation of an elastic sphere in the presence of intersurface forces based on the classical Derjaguin–Landau–Verwey–Overbeek (DLVO) theory. A concentrated solution of model spheres or bacterial strains passing through a packed sand column leads to water filtration, where the efficiency is measured by the efflux concentration, C/C0, of particles. Experimental data of model latex spheres with ranges of size, ionic concentration and pH obtained by Elimelech, and our measurements of six different bacterial strains are analyzed. A strong correlation between C/C0 and μ is found and can be used to predict deposition–transportation once the microscopic properties are known.
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