Adsorption of Toxic Anions Using Environmentally-Friendly Materials

Theme

Adsorption Mechanisms of Toxic Anions onto Layered Double Hydroxides Layered double hydroxides are composed of divalent and trivalent metal hydroxides, and these consist of a positively charged layer and a interlayer containing anions and water molecules. In recent years, Layered double hydroxides have drawn considerable attention as adsorbent materials because of their great anion-exchange capacity. Additionally, it’s to be noted that layered double hydroxides can be easily produced by reacting basic slag with water. Therefore, layered double hydroxides are expected to recover from waste as valuable resources. This study focuses on adsorption mechanisms of toxic anions onto layered double hydroxides, and the stability evaluation for anion-adsorbed layered double hydroxides is being attempted.

Studying method

Characterization of anion adsorption mechanisms onto layered double hydroxides

･Adsorption experiments

･Spectroscopic analysis

･Zeta potential measurements

Performance evaluation of layered double hydroxides

･Solubility measurements

･Geochemical modeling