Effect of electrostatic interactions on rejection of capsular and spherical particles from porous membranes: Theory and experiment

The effect of particle rotation on the motion and rejection of capsular particles in slit pores

“…[10][11][12][13] Hindered transport of particles in porous membranes can be attributed to a combination of hydrodynamic, steric, and longrange particle-membrane interactions. 14,[16][17][18] In particular, our work has focused on examining the hindered transport of nonspherical capsule-shaped particles because many pathogenic bacteria, such as Escherichia coli, Brevundimonas diminuta, and Serratia marcescens are capsule shaped. 15 We, and others, have been interested in the effect of bacterial shape and flexibility on rejections from membrane filters.…”

“…Hydrodynamic interactions are influenced by the particle size and shape 14 as well as the pore morphology. 14,16 The impact of particle shape on transport in porous media and in attachment to environmentally relevant surfaces has also been studied. 14,[16][17][18] In particular, our work has focused on examining the hindered transport of nonspherical capsule-shaped particles because many pathogenic bacteria, such as Escherichia coli, Brevundimonas diminuta, and Serratia marcescens are capsule shaped.…”

“…14,16 Several studies examining particle transport in a confined environment have reported that the translational velocity of the particle is influenced by the velocity gradient, particularly when the particle is close to the channel wall. The mathematical equations involved in computing G are nonlinear and cannot be solved using analytical methods.…”

“…15 We, and others, have been interested in the effect of bacterial shape and flexibility on rejections from membrane filters. 14,[16][17][18] In particular, our work has focused on examining the hindered transport of nonspherical capsule-shaped particles because many pathogenic bacteria, such as Escherichia coli, Brevundimonas diminuta, and Serratia marcescens are capsule shaped. 14,16 The impact of particle shape on transport in porous media and in attachment to environmentally relevant surfaces has also been studied.…”

“…14,[16][17][18] In particular, our work has focused on examining the hindered transport of nonspherical capsule-shaped particles because many pathogenic bacteria, such as Escherichia coli, Brevundimonas diminuta, and Serratia marcescens are capsule shaped. 14,16 The impact of particle shape on transport in porous media and in attachment to environmentally relevant surfaces has also been studied. [19][20][21] It has been demonstrated that particle size, shape, and surface properties can play a role in nanoparticle separations and in their detection and environmental fate.…”