The factors that affect the adsorption of bentonite minerals are:
1) The effect of bentonite type. The adsorption capacity of sodium bentonite is obviously stronger than that of other types of bentonite minerals such as calcium.
2) The influence of the particle size of bentonite particles. According to the theory of solid adsorption, the adsorption capacity of the crushed bentonite minerals is significantly improved. The finer the crushed minerals, the stronger the adsorption.
3) The influence of the solution medium. According to the electric double layer theory, bentonite mineral crystals are negatively charged and undergo ion exchange when the electric double layer is formed. If the ion concentration in the solution is too high, it will compress the electric double layer of the bentonite particles, inhibit the dispersion and diffusion of the bentonite, and even cause the bentonite to coagulate and coalesce.