Adsorption Behavior of Recyclable Magnetites with N-Components for Adsorption of Copper Ion

作者：Chiou Chyow San; Hong Gui Bing; Chen Hua Wei^*

来源：Journal of Nanoscience and Nanotechnology, 2018, 18(3): 2241-2248.

DOI：10.1166/jnn.2018.14266

• Adsorption
• Allyl Thiourea
• Copper Ions
• Magnetic Adsorbent
• Recyclable

Recyclable magnetites with thioureido group (poly-allyl-thiourea/oleic acid/magnetite, PAT-adsorbent) and amine functional group (ethylenediamine/methyl methacrylate/oleic acid/magnetite, EDA-adsorbent) were synthesized by modifying magnetite with oleic acid, methyl methacrylate, allyl thiourea and ethylenediamine. PAT-adsorbent and EDA-adsorbent were used and compared for adsorption of copper ions in a batch system due to the existence of amino group (-NH2) both on thioureido group and amine functional group. The kinetics of both PAT-adsorbent and EDA-adsorbent were evaluated utilizing pseudo-first-order and pseudo-second-order kinetic models. The equilibrium data was analyzed and compared using the Langmuir and Freundlich isotherm models. The maximum adsorption capacity (Q(m)) of PAT-adsorbent (19.126 mg g(-1)) was higher than that of EDA-adsorbent (7.096 mg g(-1)). As compared to EDA-adsorbent the magnetic adsorbent (PAT-adsorbent) with good desorption performance (> 85% desorption efficiency) and easily reuse (> 85% recovery by magnetic force) was the important factors for its potential practical application.

• 出版日期2018-3