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Adsorption of Lead Ion by Zeolites Synthesized from Jeju Scoria

제주 스코리아로부터 합성된 제올라이트에 의한 납이온 흡착

Kam, Sang-Kyu;Hyun, Sung-Su;Lee, Min-Gyu
감상규;현성수;이민규

  • Received : 2011.08.29
  • Accepted : 2011.10.31
  • Published : 2011.11.30

Abstract

The adsorption performance of lead ion was studied using five zeolites (Na-P1, sodalite (SOD), analcime (ANA), nepheline hydrate (JBW), cancrinite (CAN)) synthesized from Jeju scoria. The adsorption performances of lead ion decreased in the order of Na-P1 > SOD > ANA > JBW > CAN. These results showed that the synthetic zeolite with a higher cationic exchange capacity showed a higher adsorption performance. The uptake of lead ion by synthetic zeolites were described by Freundlich model better than Langmuir model. The adsorption kinetics of lead ion by synthetic zeolites fitted the pseudo 2nd order kinetics better than pseudo 1st order kinetics. The effective diffusion coefficients of lead ion by synthetic zeolites were ten times higher than the zeolite A synthesized from coal fly ash.

Keywords

Scoria;Synthetic zeolite;Lead;Adsorption

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