Rescaled mean spherical approximation for colloidal mixtures

Rescaled Mean Spherical Approximation for Colloidal Mixtures

In this work, the resealed mean spherical approximation (RMSA) for colloidal mixtures interacting via a DLVO-type potential is developed, and its application to suspensions of highly charged macroions is illustrated. For this purpose we introduce a simple scheme to solve the mean spherical approximation (MSA) for Yukawa mixtures with factorized coupling parameters. This scheme consists of the m...

The phase behavior of charged colloidal systems in the mean spherical approximation

The mean spherical approximation ~MSA! was used to investigate the phase behavior of charged colloidal systems with and without added salt. The competition between cohesive Coulomb interactions and stabilizing entropic and hard-core interactions controls the stability of the system and under certain circumstances, a liquid–gas-type phase transition can occur. The critical parameters and phase d...

The mean spherical approximation for a dipolar Yukawa fluid

Scattering functions for multicomponent mixtures of charged hard spheres , including the polydisperse limit . Analytic expressions in the Mean Spherical Approximation

We present a closed analytical formula for the scattering intensity from charged hard sphere fluids with any arbitrary number of components. Our result is an extension to ionic systems of Vrij’s analogous expression for uncharged hard sphere mixtures. Use is made of Baxter’s factor correlation functions within the Mean Spherical Approximation (MSA). The polydisperse case of an infinite number o...

Spherical Oil Agglomeration (SOA)/ Colloidal Gas Aphrons (CGA) Flotation

The main aim of this experimental work was to develop a separation process using micro- bubbles less than 100 µm in diameter. Micro-agglomerates were produced using 10kg crude oil/tone feed coal treated compared to 250 kg/tone feed coal treated for conventional spherical oil agglomeration. These micro-agglomerates were separated from the unagglomerated minerals by micro-bubble flotation. Colloi...