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

대한화학회지 2017년 61권 5호 p.231 ~ 237
 ( An Fu-Qiang ) - North University of China Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering

 ( Wu Rui-Yan ) - North University of China Chemical Department
 ( Li Min ) - North University of China Chemical Department
 ( Yuan Zhi-Guo ) - North University of China Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering
 ( Hu Tuo-Ping ) - North University of China Chemical Department
 ( Gao Jian-Feng ) - North University of China Chemical Department

Abstract


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 1277.1 m2·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 0.53 mmol·g?1, and relative selectivity coefficients relative to La(III) and Ce(III) is 9.6 and 8.7, respectively. Besides, ACP700 possesses better regeneration ability and reusability.

키워드

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