Zeolite can adsorb heavy metals in water.
Adsorption phenomena can be divided into physical adsorption and chemical adsorption. For gas purification, it mainly relies on adsorption and exchange.Zeolites have very high porosity, a large internal surface area and a cavity of about 50% volume. After the water loss of zeolite activated at high temperature, a large number of pores with uniform pore size are formed inside the crystal, which has strong adsorption capacity and can effectively inhale molecules with a diameter smaller than its pore size into the hole, and molecules larger than the pore size are blocked outside the hole, thus separating molecules of different sizes.