Conversion of Coal Fly Ash into Zeolite and Heavy Metal Removal Characteristics of the Products

Min-Gyu Lee; Gyeongbeom Yi; Byoung-Joon Ahn; Felicity Roddick

Korean Journal of Chemical Engineering, Vol.17, No.3, 325-331, May, 2000

DOI10.1007/BF02699048 Export Citation

Conversion of Coal Fly Ash into Zeolite and Heavy Metal Removal Characteristics of the Products

Min-Gyu Lee^†, Gyeongbeom Yi , Byoung-Joon Ahn¹, and Felicity Roddick²

Division of Chemical Engineering, Pukyong National University, Pusan 608-739, Korea
¹Department of Chemistry Education, Chonbuk National University, Chonju 561-756, Korea
²Department of Chemical and Metallurgical Engineering, Royal Melbourne Institute of Technology, Victoria 3001, Australia

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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

[References]

Al-Duri B, Khader Y, McKay G, J. Chem. Technol. Biotechnol., 53, 345 (1992)
Amrhein CA, Hagnia GH, Kim TS, Mocher PA, Environ. Sci. Technol., 30, 735 (1996)
Banerjee K, Cheremisinoff PN, Cheng SL, Environ. Sci. Technol., 29, 2243 (1995)
Breck DW, "Zeolite Molecular Sieves," John Wiley & Sons, New York (1974)
Ferraiolo G, Zilli M, Convert S, J. Chem. Technol. Biotechnol., 47, 281 (1990)
Fogler HS, "Elements of Chemical Reaction Engineering," 3rd ed., Prentice-Hall (1999)
Hung YT, Int. J. Environ. Stud., 21, 261 (1983)
Jain KK, Prasad G, Singh VN, J. Chem. Technol. Biotechnol., 431 (1978)
Jiang W, Roy DM, Am. Ceram. Soc. Bull., 71, 642 (1992)
Kapoor A, Viraraghaven T, Adsorpt. Sci. Technol., 9(3), 130 (1992)
Kim W, Jung SH, Ahn BJ, J. Ind. Eng. Chem., 3(3), 185 (1997)
Lin CF, Hsi HC, Environ. Sci. Technol., 29, 1109 (1995)
Moon MJ, Jhon MS, Bull. Chem. Soc. Jpn., 59, 1215 (1986)
Panday KK, Prasad G, Singh VN, Water Res., 19, 867 (1985)
Shigemoto N, Sugiyama S, Hayashi H, Miyaura K, J. Mater. Sci., 28, 5777 (1995)
Singh BK, Mirsa NM, Rawat NS, Minetech., 14(4), 35 (1993)
Singh BK, Rawat NS, J. Chem. Technol. Biotechnol., 61(1), 57 (1994)
Tazaki K, Fyfe WS, Sahu KC, Powell M, Fuel, 68, 727 (1989)
Teuney MW, Echellberger WF, "Fly Ash Utilisation in the Treatment of Polluted Waters," Proc. of Second Ash Utilisation Symposium, March 10-11, Pittsburgh PA. (1970)
Treybal RE, "Mass Transfer Operation," 3rd ed., McGraw Hill (1980)
Viraraghavan T, Dronamraju MM, Water Poll. Res. J. Canada, 28B, 369 (1993)
Yadara KP, Tyagi BS, Panday KK, Singh VN, Environ. Technol. Lett., 8, 225 (1987)

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[2] Amrhein CA, Hagnia GH, Kim TS, Mocher PA, Environ. Sci. Technol., 30, 735 (1996)

[3] Banerjee K, Cheremisinoff PN, Cheng SL, Environ. Sci. Technol., 29, 2243 (1995)

[4] Breck DW, "Zeolite Molecular Sieves," John Wiley & Sons, New York (1974)

[5] Ferraiolo G, Zilli M, Convert S, J. Chem. Technol. Biotechnol., 47, 281 (1990)

[6] Fogler HS, "Elements of Chemical Reaction Engineering," 3rd ed., Prentice-Hall (1999)

[7] Hung YT, Int. J. Environ. Stud., 21, 261 (1983)

[8] Jain KK, Prasad G, Singh VN, J. Chem. Technol. Biotechnol., 431 (1978)

[9] Jiang W, Roy DM, Am. Ceram. Soc. Bull., 71, 642 (1992)

[10] Kapoor A, Viraraghaven T, Adsorpt. Sci. Technol., 9(3), 130 (1992)

[11] Kim W, Jung SH, Ahn BJ, J. Ind. Eng. Chem., 3(3), 185 (1997)

[12] Lin CF, Hsi HC, Environ. Sci. Technol., 29, 1109 (1995)

[13] Moon MJ, Jhon MS, Bull. Chem. Soc. Jpn., 59, 1215 (1986)

[14] Panday KK, Prasad G, Singh VN, Water Res., 19, 867 (1985)

[15] Shigemoto N, Sugiyama S, Hayashi H, Miyaura K, J. Mater. Sci., 28, 5777 (1995)

[16] Singh BK, Mirsa NM, Rawat NS, Minetech., 14(4), 35 (1993)

[17] Singh BK, Rawat NS, J. Chem. Technol. Biotechnol., 61(1), 57 (1994)

[18] Tazaki K, Fyfe WS, Sahu KC, Powell M, Fuel, 68, 727 (1989)

[19] Teuney MW, Echellberger WF, "Fly Ash Utilisation in the Treatment of Polluted Waters," Proc. of Second Ash Utilisation Symposium, March 10-11, Pittsburgh PA. (1970)

[20] Treybal RE, "Mass Transfer Operation," 3rd ed., McGraw Hill (1980)

[21] Viraraghavan T, Dronamraju MM, Water Poll. Res. J. Canada, 28B, 369 (1993)

[22] Yadara KP, Tyagi BS, Panday KK, Singh VN, Environ. Technol. Lett., 8, 225 (1987)