Study on Competitive Absorption Properties for Heavy Metal Ions by Modified Zeolite
The authors made experimental studies on the competitive absorption and the impact of factors of the heavy metal ions in modified zeolite choosing Na-modified zeolite as the absorbent and single solutions with cadmium, zinc, lead, as well as a mixture with cadmium, zinc, lead solution for the absorbent. The results indicated that if a variety of divalent heavy metals were present, there was competitive absorption between the ions and the competitiveness for the Pb2+>Cd2+>Zn2+; Zn2+-Cd2+ showed a marked synergistic effect of absorption, and Zn2+-Pb2+, Cd2+-Pb2+ showed antagonistic effect.