Coagulation sonic

Adsorption on Kaolinite. For kaolinite, the polymer adsorption density is strongly dependent on the solid/liquid ratio, S/L, of the clay suspension. As S/L increases, adsorption decreases. This S/L dependence cannot be due totally to autocoagulation of the clay particles since this dependence is observed even in the absence of Ca2+ at pH 7 and at low ionic strength where auto-coagulation as measured by the Bingham yield stress is relatively weak (21). Furthermore, complete dispersion of the particles in solvent by ultra-sonication before addition of... 

This problem is encountered in the theory of coagulation of particles in sonic fields. 

The more common emulsion formed in the petroleum industry is the water-in-oil type. The sensitivity of electrokinetic sonic analysis to coagulation-coalescence processes in water-in-oil media is of great importance. It allows for rapid selection and optimization of different chemical demulsifiers. In addition, as a research tool, it supports the development of a fundamental understanding of chemical treatment of water-in-oil emulsions. 

An electroacoustic method based on the application of a sonic field and detection of the electric signal proved to be a reliable technique for measuring the kinetics of coagulation/coalesence process of colloidal systems in non-polar and non-transparent media like water-in-crude oil emulsion. 

A variant, the so-called "coagulation method," is based on the difference in swellability of polymers in a good and in a poor solvent. In a sonication bath, purified SWCNTs, produced by a HiPCO process, were first purified by an acidic HCl treatment, which led to the obtaining of a CNT sample containing less than 8 wt% of metal residue, and subsequently mixed with the polymer (poly(methyl... 

---