| 초록 |
Removing aniline pollutants from organic waste-liquid rapidly and effectively has become an environmental problem owing to the high toxicity of aniline. Traditional aniline-separation methods have been limited by the complex techniques and high economic cost. In this study, green renewable Choline chloride (choline-salt, [N1,1,1C2OH]Cl) were used as new adsorbents for the removal of aniline by forming choline-based deep eutectic solvents (Choline-DESs) and displayed an excellent aniline removal efficiency. The mechanism of this separation technique is to remove aniline by forming a choline salt-aniline DES. The efficiency of [N1,1,1C2OH]Cl in removing aniline after regeneration and reuse five times was maintained. The Freundlich model showed that the adsorption mechanism between aniline and choline-salt is controlled by entropy rather than a change in enthalpy. The data indicated that the Choline-DESs have much higher adsorption capacity (> 278.5 mg/g) than conventional adsorbents. The high adsorption capacity, simple synthesis technique, and excellent reusability make choline-salt an attractive adsorbent for the removal of aniline from organic waste-liquid. |
