What is a colloidal solution?

Also called colloidal suspension, colloidal solution is the result derived from an uniform suburb of one phase, a "dispersed phase", inside another, "continuous phase". The continuous phase can be solid, liquid or gas. The colloidal solution is not a real solution, because the colloidal particles are generally microscopically visible and size usually range from 1-1,000 nanometers. These particles differ considerably in the form, from the boards to the pole to the sphere. The stabilization of colloid is called peptization, while destabilization is called flocculation. The liquid scattered in the gas is called aerosol, whether fog or fog, while the gas scattered in the liquid is referred to as foam, an example of shaving or whipping cream. If the liquid is scattered in a solid substance, it is a "gel", but solid scattered in the liquid is "sol" - one example of them is dessert gelatin, while the color is sol. Milk is an emulsion-capalina-capalin called Hydroloid.

Brown's movement is the most remarkable mechanical force stabilizing colloidal fluid. The continuous phase, sometimes called the phase of "solvents", mixes the particles of the colloidal solution using individual bombing colloidal particles. This Brown's mechanical force is successfully stabilized, simply because the gravitational force of small colloidal particles is not large enough to overcome them. Another factor, a removal electric forces, shows stabilizing behavior of short reach towards colloidal solution. There are other forces, attractive, which seem to modify the nature of colloids, cavity production; These are under ongoing investigation.

evidence that the effect of electrical forces is peptized by the colloidal particlened by bringing a colloidal solution under the influence of the electric field. The particles migrate in response. Peptization can be increased by adding suitable surfaces or substances that provide ions that connect to colloidal particles. On the contrary, flocculation can be reachedOut using different additives that remove electrostatic charge and which can also add volume. Floculation is particularly important for the removal of solids in wastewater treatment plants.

One device used to study colloidal solution - ZETA meter - measures the potential difference between the scattered colloidal particle layer and the surrounding continuous phase. The lower the difference in potential, the more likely the particles are floating; The higher it is, the more stable the colloid. Another important tool is a nepelometer. It is often used to detect suspended particles in liquid or gas colloid. This is closely related to the turbidimeter used to detect Hasiness in water samples, such as samples taken from lakes and streams.