Evaluation of industrial caF2 sludge waste as heavy metal sorption material
Chan, Soo Cheng
Date of Issue2008
School of Civil and Environmental Engineering
Heavy metals (HM) immobilization materials developed from waste materials not only allow waste reuse but also is economical compared to synthetic sorbents. This project characterized the CaF2 sludge and assessed its sorption capacity for aqueous Lead (Pb), Zinc (Zn) and Cadmium (Cd). The important parameters controlling aqueous metals removal, i.e., initial metal ion concentrations, solution pH, ionic strength, and HM removal kinetics were evaluated using batch experiments. Sequential extraction (SE) technique was also applied to assess the fractionation of the sorbed HM in the sludge material.