Zeta Potential of Sepiolite in Aqueous System

Zeta potential of purified sepiolite in aqueous system was studied as a function of pH and solid content. From the experimental results, it was found that sepiolite surface acquired a negative charge in water at natural pH, and the value of zeta potential decreased with the increase of pH value. Solid content had effect on zeta potential, but it can be minimized by the increase of time.