Mixed salt crystallisation fouling

Salt crystallisation at the surface of a heterogeneous porous medium

Evaporation of saline solutions from a porous medium often leads to the precipitation of salt at the surface of the porous medium. It is commonly observed that the crystallized salt does not form everywhere at the porous medium surface but only at some specific locations. To explain this phenomenon, we consider efflorescence formation at the surface of a saturated heterogeneous porous column (f...

Simple models for charge and salt effects in protein crystallisation

A simple extension of existing models for protein crystallisation is described, in which salt ions and charge neutrality are explicitly incorporated. This provides a straightforward explanation for the shape of protein crystallisation boundaries, the associated scaling properties seen for lysozyme, and can also explain much of the salt dependence of the second virial coefficient. The analysis h...

Sodium Aluminosilicate Fouling and Cleaning of Decontaminated Salt Solution Coalescers

Crystallisation kinetics

D. Quigley (Theory Group) The rates at which crystals nucleate and grow from either a supercooled melt, or a supersaturated solution, are essential inputs for solidification models in a variety of contexts. These include materials synthesis and processing, development of antifreeze strategies for cryopreservation, and understanding the formation of harmful biological crystals such as kidney st...

More mixed messages in terms of salt.

I n this issue of CJASN, McCarron et al. (1) again take on the salt and health issue. The group seems to be in the minority this year, because the salt admonishers have been out in force (2–4). The salt party-line opposition has been relatively quiet as of late, although Graudal and Galløe (5) pooh-poohed salt restriction as a component of antihypertensive therapy, stating that, “Population stu...