| 초록 |
The study on removal of ammonium nitrogen (NH4-N), a toxic element damaged to living bodies in water, has received great attention in recent years. In this study, we synthesized Ordered Mesoporous Alumina (OMAs) with different pore structures by Evaporation Induced Self Assembly (EISA) method and investigated adsorption performances for removal of ammonium ions in aqueous solution. The physical properties of OMAs were controlled by adjusting acid concentrations and heat treatment conditions. Furthermore, OMAs were functionalized by using chemicals containing phosphoric, sulfuric, and carboxylic acid groups to tune the acidity. In the adsorption experiments, the effects of adsorbent amount, ammonium concentration, reaction temperature and time were optimized. The prepared OMAs showed high surface area with uniform pore diameter and the enhanced physical/chemical properties for the removal of ammonium nitrogen from aqueous solution as compared to the commercial alumina oxides. |
