Bulk Properties of Suspensions Equilibrium Sediment Volume or Height and Redispersion

Bulk Properties of Suspensions Equilibrium Sediment Volume (or Height) and Redispersion 

For a structured suspension, obtained by controlled flocculation or the addition of thickeners (such polysaccharides, clays or oxides), the floes sediment at a rate depending on their size and porosity of the aggregated mass. After this 

Normally, in sediment volume measurements, the initial volume (or height Hjj) is compared with the ultimately reached value V (or H). A coUoidally stable suspension gives a close-packed structure with relatively small sediment volume (dilatant sediment, referred to as clay). A weakly flocculated or structured suspension gives a more open sediment, and hence a higher sediment volume. Thus, by comparing the relative sediment volume V/V or height H/H, it is possible to distinguish between a clayed and flocculated suspension. 

Lyklema, J. (1987) in Solid/Liquid Dispersions, Chapter 3 (ed. Th.F. Tadros), Academic Press, London. 

Hunter, R.J. (1981) Zeta Potential in Colloid Science Principles and Application, Academic Press, London. 

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