soil porosity is interparticle or intraparticle property. if talk about about porous material, these have pores inside themselves, so soil particles also used in adsorption experiment, which encourage that a single aprticle hold inside pores or spaces for adsorption, so i become confused if it is a intraparticle or interpartile property.
I do not get your point , depending upon packing, can you please explain it further?
The Inter-particle porosity are the large pores between particles while the Intra-particle porosity are the smaller pores within the particle. For clarity consider the Inter-particle as the buses that run between towns and the Intra-particle as the metro line within the town. As to which is important, for flow through an adsorption bed then the large pores are important. As these become smaller due to a reduction in the particle size or a greater packing then there will be greater restrictions to flow. However, for the adsorption on the surface then the narrow pores within the particles will increase the available surface area. An ideal system needs both types of porosity with good connectivity between them.
Best regards,
Malcolm
In the case of a single porous particle, we use the term "internal diffusion (internal mass /transfer/transport)" or "intraparticle diffusion (mass transfer / transport)" to describe the mass transport phenomena in the porous structure. In the case of a single porous particle or not, we use the term external diffusion of interparticle diffusion to describe the mass transfer phenomena form bulk to particle surface. In the case of the bed we are not talking about "iner or intra phenomena", but we can talk about axial dispersion, but it is a completely different phenomenon of macroscopic than molecular nature. And one more thing - depending on the size of the pores in the particle we can deal with either molecular diffusion or Knudsen diffusion. Instead of "interparticle porisity" it is better to use bed porosity. The same in case of single particle. "Particle porosity" is the correct term.
Regards,
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