Poster Number 470
See more from this Division: S02 Soil Chemistry
See more from this Session: Heavy Metals in Soil Environments: I (Posters)
Abstract:
This study investigates the effect of organic and inorganic ligands (citrate, humic acid, siderophore and phosphate) on Zn adsorption in systems consisting of more than one mineral surface. The mixed mineral systems are composed of the following combinations of minerals: goethite and gibbsite, goethite and kaolinite, ferrihydrite and gibbsite, ferrihydrite and kaolinite. Adsorption is carried out in 50ml centrifuge tubes at a 1:1 metal to ligand molar ratio and pH range of 4.5 to 7.5. In addition, Spectroscopic techniques are utilized to characterize the adsorption mechanisms of Zn in the presence and absence of ligands at the various pH levels. This study should provide insight into the role of ligands in increasing or decreasing the adsorption of metals in mixed mineral systems.
See more from this Division: S02 Soil Chemistry
See more from this Session: Heavy Metals in Soil Environments: I (Posters)