한국분말야금학회지 Vol. 27 No. 4 (p.287-292)

A Study on the Removal of Heavy Metal with Mg-Modified Zeolite

키워드 :
LAS,Lithium-Aluminum-Silicate,Zeolite,Adsorption,Lead

목차

Abstract
1. Introduction
2. Materials
   2.1 Experimental Materials
   2.2 Experimental Method
   2.3 Analysis Method
3. Results and Discussion
   3.1 Analysis of raw material residue
   3.2 Modification of Mg-zeolite
   3.3 Absorption test of heavy metal (Pb)
4. Conclusion
   4.1 Modification of Mg-zeolite
   4.2 Absorption of heavy metal (Pb)
References

초록

The subject of this study is a zeolite generated as a by-product of recycling LAS (lithium-aluminum-silicate) resources, a kind of glass and ceramic produced by induction. The zeolite by-product is modified into Mg-zeolite using Mg as a cation to absorb Pb, a heavy metal generated from water pollution caused by recent industrial wastewater. An ion-exchange method is used to carry out the modification process, from zeolite byproduct to Mg-zeolite, and simultaneously absorb the Pb in the heavy-metal solution (99.032 mg/L). It is found that the sodium zeolite in the raw material residue can be modified to magnesium zeolite by reacting it with a mixture solution at 1 M concentration for 24 h. As a result, it is found that the residual Pb (0.130 mg/L) in the heavy metal solution is shown to be absorbed by 99.86%, with successful formation of a Mg-modified zeolite.