ADSORPTION AND AFFECTING FACTORS OF BENTONITE TO Cd ²⁺

The paper has studied the physical-chemical properties of Ca-bentonite in Yanting and adsorption to Cd²⁺ in solution.The study shows that bentonite has a good adsorption to Cd²⁺ and adsorption is affected by pH of solution.Bentonite adsorb heavy mental by iron exchange.It is advantageous to adsorption of Cd²⁺ that adsorbent or consistency of solution is increased.Adsorb model of bentonite to Cd²⁺ is belong to Frendlish adsorption equation.