It is known that ions of transition and alkaline earth metals or some kinds of anionic species tend to form complexes by coordination with certain type of compounds called “ligand.” Chelating resins are designed to catch certain types of ions by this phenomena.
Synthetic adsorbents are a series of products based on ion exchange resin manufacturing technology and are designed for the uses as solid extractant. Synthetic adsorbents have a large surface area and fine pore structures inside the particle-like activated carbon. For this porous characteristic, they can effectively adsorb organic compounds from aqueous solutions. Extraction processes with synthetic adsorbents enable reducing the solvent amounts and safer operations compared with conventional solvent extraction techniques.