The Adsorption of Lead from Aqueous Solutions Using Coal Fly Ash : Effect of Crystallinity
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The Adsorption of Lead from Aqueous Solutions Using Coal Fly Ash : Effect of Crystallinity

Authors: Widi Astuti, Agus Prasetya, Endang Tri Wahyuni, I Made Bendiyasa


Coal fly ash (CFA) generated by coal-based thermal power plants is mainly composed of some oxides having high crystallinity, like quartz and mullite. In this study, the effect of CFA crystallinity toward lead adsorption capacity was investigated. To get solid with various crystallinity, the solution of sodium hydroxide (NaOH) of 1-7 M was used to treat CFA at various temperature and reflux time. Furthermore, to evaluate the effect of NaOH-treated CFA with respect to adsorption capacity, the treated CFA were examine as adsorbent for removing lead in the solution. The result shows that using NaOH to treat CFA causes crystallinity of quartz and mullite decrease. At higher NaOH concentration (>3M), in addition the damage of quartz and mullite crystallinity is followed by crystal formation called hydroxysodalite. The lower crystalllinity, the higher adsorption capacity.

Keywords: Coal fly ash, crystallinity, lead, adsorption capacity

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[1] C.D. Woolard, K. Petrus, M.V.D. Horst, "The use of a modified fly ash as an adsorbent for lead", Water SA, vol. 26, no. 4, pp.531 - 536, 2000.
[2] D. Wen, Y.S. Ho, X.Tang, "Comparative sorption kinetics studies of ammonium onto zeolite", J.Hazard. Mater, vol. B 113, pp. 252-256, 2006.
[3] J.A. Hefne, W.K. Mekhemer, N.M. Alandis, O.A. Aldayel, T. Alajyan, "Kinetic and Thermodynamic study of the Adsorption of Pb(II) from Aqueous solution to The Natural and Treated Bentonite", International Journal of Physical Sciences, vol. 3, pp. 281-288, 2008.
[4] J.Y. Hwang, X. Sun, Z. Li, "Unburned Carbon from Fly Ash for Mercury Adsorption : I. Separation and Characterization of Unburned Carbon", Journal of Minerals and Materials Characterization & Engineering, vol 1, no. 1, pp. 39-60, 2002.
[5] K.H. Sugiyarto, Kimia Anorganik I (Unpublished Book style). Yogyakarta : Jurusan Pendidikan Kimia Universitas Negeri Yogyakarta , 2000.
[6] M. Dogan, Y. Ozdemir, M. Alkan, "Adsorption Kinetics and Mechanism of Cationic Methyl Violet and Methylene Blue Dyes onto Sepiolite", Dyes and Pigments, vol.75, pp. 701-713, 2007.
[7] P. Ricou, V. Hequet, I. Lecuyer, P. Le Cloirec, "Removal of Cu2+ and Zn2+ in Aqueous Solutions by Sorption onto Fly Ash and Fly Ash Mixtures (Published Conference Proceedings style)," in Proc. International Ash Utilization Symposium, University of Kentucky, 1999.
[8] Schneider and Komarneni, Mullit (Book style). Wiley-VCH, 2005.
[9] Sukandarrumidi, Batubara dan Pemanfaatannya (Book style). Yogyakarta : Gadjah Mada University Press, 2006.
[10] Sutarno, "Sintesis Faujasite dari Abu Layang Batubara : Pengaruh Refluks dan penggerusan Abu Layang Batubara terhadap Kristalinitas Faujasite," Jurnal Matematika dan Sains, vol.9 no.3, pp.285-290, 2004.
[11] Y.S. Ho, G. McKay, "Batch Lead (II) Removal from Aqueous Solution by Peat : Equilibrium and Kinetics", Trans IChemE, vol. 77 part B, pp. 165-173, 1999.
[12] Y.S. Ho, "Review of Second-Order Models for Adsorption Systems," Journal of Hazardous Materials, B136, pp. 681-689, 2006.