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Issue
Korean Journal of Chemical Engineering,
Vol.17, No.3, 325-331, 2000
Conversion of Coal Fly Ash into Zeolite and Heavy Metal Removal Characteristics of the Products
Lee MG, Yi G, Ahn BJ, Roddick F
Fly ash obtained from a power generation plant was used for synthesizing zeolite. Zeolites could be readily synthesized from the glassy combustion residues and showed potential for the removal of heavy metal ions. By the use of different temperatures and NaOH concentration, five different zeolites were obtained : Na-Pl, faujasite, hydroxy sodalite, analcime, and cancrinite. The synthesized zeolites had greater adsorption capabilities for heavy metals than the original fly ash and natural zeolites. Na-Pl exhibited the highest adsorption capacity with a maximum value of about 1.29 mole Pb g-1 and had a strong affinity for Pb2+ ion. The metal ion selectivity of Na-Pl was determined as : Pb2+ > Cu2+ > Cd2+ > Zn2+, consistent with the decreasing order of the radius of hydrated metal ion. the adsorption isotherm for lead by Na-Pl fitted the Freundlich rather than the Langumuir isotherm.
Keywords: Fly Ash; Synthetic Zeolite; Adsorption; Heavy Metal Adsorption
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[Cited By]
  1. Kim JK, Kim SC, Korean Journal of Chemical Engineering, 18(4), 531, 2001
  2. Mun SP, Ahn BJ, Journal of Industrial and Engineering Chemistry, 7(5), 292, 2001
  3. Kam SK, Kim KS, Ahn BJ, Lee MG, HWAHAK KONGHAK, 40(2), 265, 2002
  4. Kim SJ, Lim KH, Joo KH, Lee MJ, Kil SG, Cho SY, Korean Journal of Chemical Engineering, 19(6), 1078, 2002
  5. Jang JG, Kim MR, Kim WH, Lee JK, Korean Journal of Chemical Engineering, 19(6), 1097, 2002
  6. Lee MG, Cheon JK, Kam SK, Journal of Industrial and Engineering Chemistry, 9(2), 174, 2003
  7. Zhao X, Jia Q, Zhou W, Korean Journal of Chemical Engineering, 26(6), 1729, 2009
  8. Choi YL, Angaru GKR, Kim DS, Ahn HY, Kim DH, Choi CD, Reddy KJ, Yang JK, Chang YY, Applied Chemistry for Engineering, 30(6), 749, 2019
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