Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31824
The Effect of Unburned Carbon on Coal Fly Ash toward its Adsorption Capacity for Methyl Violet

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 quartz, mullite, and unburned carbon. In this study, the effect of unburned carbon on CFA toward its adsorption capacity was investigated. CFA with various carbon content was obtained by refluxing it with sulfuric acid having various concentration at various temperature and reflux time, by heating at 400-800°C, and by sieving into 100-mesh in particle size. To evaluate the effect of unburned carbon on CFA toward its adsorption capacity, adsorption of methyl violet solution with treated CFA was carried out. The research shows that unburned carbon leads to adsorption capacity decrease. The highest adsorption capacity of treated CFA was found 5.73 x 10-4mol.g-1.

Keywords: CFA, carbon, methyl violet, adsorption capacity.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2003


[1] 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.
[2] 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.
[3] 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.
[4] 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.
[5] Sukandarrumidi, Batubara dan Pemanfaatannya (Book style). Yogyakarta : Gadjah Mada University Press, 2006.
[6] 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.
[7] Y.S. Ho, "Review of Second-Order Models for Adsorption Systems," Journal of Hazardous Materials, B136, pp. 681-689, 2006.
[8] Y.S. Al-Degs, M.I. El-Barghouthi, A.H. El-Sheikh, G.M. Walker, "Effect of Solution pH, Ionic Strength, and Temperature on Adsorption Behaviour of Reactive Dyes on Activated Carbon", Dyes and Pigments, vol.77,pp.16-23, 2008.