초록 |
Magnetic separation is an innovative technology. The synthesis and application of magnetic nanoparticles to water and wastewater treatment have attracted considerable attention in recent years. Magnetic nanoparticles can be used as adsorbents for water and wastewater treatment and separated from aqueous medium through magnetic separation, and among the various magnetic nanoparticles, maghemite (γ-Fe2O3) and magnetite (Fe3O4) are the iron oxides observed to be useful. Magnetic nanoparticles can be immobilized into polymers such as alginate, chitosan, polyvinyl alcohol, and gellan gum to form magnetic beads or composites. In addition, functional materials are added into the beads/composites to remove target contaminants. |