Selective Removal of Al(III) from Rare Earth Solutions Using Peas-based Activated Carbon

  • An, Fu-Qiang (Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, North University of China) ;
  • Wu, Rui-Yan (Chemical Department, North University of China) ;
  • Li, Min (Chemical Department, North University of China) ;
  • Yuan, Zhi-Guo (Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, North University of China) ;
  • Hu, Tuo-Ping (Chemical Department, North University of China) ;
  • Gao, Jian-Feng (Chemical Department, North University of China)
  • Received : 2017.01.05
  • Accepted : 2017.07.28
  • Published : 2017.10.20


Efficiently removing Al(III) from rare earth is very significant because even trace amount of Al(III) can cause serious harm to the rare earth materials. In this paper, a nitrogen-containing activated carbon, AC-P700, was synthesized using peas as raw materials. The AC-P700 was characterized by surface area analyzer, FT-IR, and XPS methods. The adsorption and recognition properties of AC-P700 towards Al(III) were investigated, and the recognition mechanism was also analyzed. The BET special surface area of AC-P700 was $1277.1m^2{\cdot}g^{-1}$, and the average pore diameter was 1.90 nm. The AC-P700 possesses strong adsorption affinity and excellent recognition selectivity towards Al(III). The adsorption capacity for Al(III) could reach to $0.53mmol{\cdot}g^{-1}$, and relative selectivity coefficients relative to La(III) and Ce(III) is 9.6 and 8.7, respectively. Besides, AC-P700 possesses better regeneration ability and reusability.


Activated carbon;Recognition;Selectivity;Al(III);Peas


Supported by : Natural Science Foundation of China, Science Foundation of Shanxi Province


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