Physico-Chemical Characterization of Akoko Mined Kaolin Clay


Over the past several decades, kaolin has been intensively used in ceramics formulation by the indigene of Erusu Akoko, in south western Nigeria. Kaolin is a clay mineral with wide technological applications in the industry. It finds applications in fiberglass, paper, rubber, tires, ceramics, cements, latex, paint, printing inks, catalysts for petroleum refining, medicines, water treatment, cosmetics and others. In the present work, we studied the mineralogy of Erusu clay that had been in use for several generations without understanding the physico-chemical properties. Samples of the material were pre-treated and subjected to analysis. From our results, Akoko clay exhibited decompositional water loss of 13.23% and 13.14% in air and argon respectively at 1000°C. The Brunanuer-Emmett-Teller (BET) analysis showed that the kaolin clay was majorly a mesoporous material and the isotherm was of the type iv. The micropore surface area obtained from t-plot is 9.06 m2/g indicating that the materials also contain micropore with size and volume of 15.611 ? and 0.265 cc/g respectively. The XRD, IR and TEM analysis confirmed the presence of Kaolin and Quarts as the major constituents of Akoko clay.

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Olaremu, A. G. (2015) Physico-Chemical Characterization of Akoko Mined Kaolin Clay. Journal of Minerals and Materials Characterization and Engineering, 3, 353-361. doi: 10.4236/jmmce.2015.35038.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Scorzelli, R.B., Bertolino, L.C., Luz, A.B., Duttine, M., Silva, F.A.N.G. and Munayco, P. (2008) Spectroscopic Studies of Kaolin from Different Brazilian Regions. Clay Minerals, 43, 129-135.
[2] Ramaswamy, S. and Raghavan, P. (2011) Significance of Impurity Mineral Identification in the Value Addition of Kaolin—A Case Study with Reference to an Acidic Kaolin from India. Journal of Minerals and Materials Characterization and Engineering, 10, 1007-1025.
[3] Belver, C., Munoz, M.A.B. and Vicente, M.A. (2002) Chemical Activation of Kaolin under Acid and Alkaline Conditions. Chemistry of Materials, 14, 2033-2043.
[4] Varga, G. (2007) The Structure of Kaolinite and Metakaolinite. Epitoanyag, 59, 4-8.
[5] Panda, A.K., Mishra, B.G., Mishra, D.K. and Singh, R.K. (2010) Effect of Sulphuric Acid Treatment on the Physic-Chemical Characteristics of Kaolin Clay. Colloids and Surface A: Physicochemical and Engineering Aspects, 363, 98-104.
[6] Hosseini, M.R., Pazouki, M., Ranjbar, M. and Habibian, M. (2007) Bioleaching of Iron from Highly Contaminated Kaolin Clay by Aspergillus niger. Applied Clay Science, 37, 251-257.
[7] Ryu, H.W., Cho, K.S., Chang, Y.K., Kim, S.D. and Mori, T. (1995) Refinement of Low-Grade Clay by Microbial Removal of Sulfur and Iron Compounds Using Thiobacillus ferrooxidants. Journal of Fermentation and Bioengineering, 80, 46-52.
[8] Mandal, S.K. and Benerjee, P.C. (2004) Iron Leaching from China Clay with Oxalic Acid: Effect of Different Physic-Chemical Parameters. International Journal of Mineral Processing, 74, 263-270.
[9] Lenarda, M., Storaro, L., Talona, A., Moretti, E. and Riello, P. (2007) Solid Acid Catalysts from Clays: Preparation of Mesoporous Catalysts by Chemical Activation of Metakaolin under Acid Conditions. Journal of Colloid and Interface Science, 311, 537-543.
[10] Atta, A.Y., Ajayi, O.A. and Adefila, S.S. (2007) Synthesis of Faujasite Zeolite from Kankara Kaolin Clay. Journal of Applied Sciences Research, 3, 1017-1021.
[11] Lussier, R.J. (1991) A Novel Clay-Based Catalytic Material-Preparation and Properties. Journal of Catalysis, 129, 225-237.
[12] Jepson, W.B. (1988) Structural Iron in Kaolinites and in Associated Ancillary Minerals. In: Stucki, J.W., Goodman, B.A. and Chwertmann, U.S., Eds., Iron in Soils and Clay Minerals, NATO Advanced Science Institutes Series, D. Riedel Publishing Company, Dordrecht, 467-53.
[13] Ramaswamy, S. and Raghavan, P. (2010) Investigations on a Kaolin Sample from Kerala for Possible Value Addition. Proceedings of the Xi International Seminar on Mineral Processing Technology (MPT-2010), Jamshedpur, 15-17 December 2010, 691-700.
[14] Murry, C.B. (2002) Industrial Clays Case Study. Mining, Minerals and Sustainable Development, 64, 1-9
[15] Gonzalez, J.A. and Ruiz, M.D.C. (2006) Bleaching of Kaolins and Clays by Chlorination of Iron and Titanium. Applied Clay Science, 33, 219-229.
[16] Aroke, U.O., El-Nafaty, U.A. and Osha, O.A. (2013) Properties and Characterization of Kaolin Clay from Alkaleri, North-Eastern Nigeria. International Journal of Emerging Technology and Advanced Engineering, 3, 387-392.
[17] Ammann, L. (2003) Cation Exchange and Adsorption on Clay and Clay minerals. Unpublished PhD Dissertation, Christian Albrechts-Universität, Deutschland.
[18] Deniz, I. (2005) Organoclay Preparation for Anionic Contaminant Removal from Water. Unpublished MSc Thesis, Middle East Technical University, Ankara.
[19] Bontle, M. and Nadiye-Tabbiruka, M.S. (2007) Chemical and Thermal Characterization of a Clayey Material Found Near Gaborone Dam. Journal of Applied Sciences and Environmental Management, 11, 77-80.
[20] Al-Ani, T. and Sarapaa, O. (2008) Clay and Clay Mineralogy. Report on Geological Survey of Finland. Kaolinite Books, Litmanen.
[21] Gregg, S.J. and Sing, K.S.W. (1982) Adsorption, Surface Area and Porosity. 2nd Edition, Academic Press, London.
[22] Brunauer, S., Emmet, P.H. and Teller, E. (1939) Adsorption of Gases in Multimolecular Layers. Journal of the American Chemical Society, 60, 309-319.
[23] Douglas, M.R. (2001) Characterization of Zeolites by Sorption Capacity Measurements. In: Robson, H., Ed., Verified Synthesis of Zeolitic Materials, Elsevier Science, Amsterdam.
[24] Farmer, V.C. (1974) The Infrared Spectra of Minerals. Mineralogical Society Monograph, London.
[25] Gardsden, J.A. (1975) Infrared Spectra of Minerals and Related Inorganic Compounds. Butterworth & Co Publishers Ltd., London, 277 p.
[26] Thomas, N.S. (1988) Interpreting Spectra of Organic Molecules. University Science Books, California.
[28] Burhan, D. and Emin, C. (2009) Investigation of Central Anatolian Clays by FTIR Spectroscopy. International Journal of Natural and Engineering Sciences, 3, 154-161.
[29] Yleana, M.C.L. (2005) FTIR Micro-Spectroscopy of RDX Interactions with Clay Minerals. Unpublished M Sc Thesis, University of Puerto Rico, Mayaguez.
[30] Giese, R.F. (1988) Kaoline Minerals: Structure and Stabilities. In: Bailey, S.W., Ed., Hydrous Phyllosilicates (Exclusive of Micas), 19, Mineralogical Society of America, Washington DC, 29-66.
[31] Grim, R.E. (1968) Clay Mineralogy. McGraw-Hill Book Co., New York, 596.
[32] Velde, B. (1992) Introduction to Clay Mineral. Chapman and Hall, London.

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