Synthesis of Zeolite Na-LSX from Iraqi Natural Kaolin using Alkaline Fusion Prior to Hydrothermal Synthesis Technique
The synthesis of zeolite materials by hydrothermal transformation of kaolin using an alkaline fusion prior to hydrothermal synthesis method was investigated. The kaolin clay used in the present investigation was supplied from Iraq. The physical and chemical characterization of the starting kaolin and produced zeolite Na-LSX samples were carried out using different analytical techniques such as Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), X – Ray Diffraction (XRD), X – Ray Fluorescence (XRF), Thermogravimetric Analysis (TGA), Fourier Transform Infrared (FT-IR) Spectroscopy and Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES). An alkaline fusion method was introduced prior to the hydrothermal treatment while kaolin clay powder was mixed manually with NaOH powder (ratio = 1/1.2 in weight). The metakaolinisation phase was achieved by calcining the mixture in air at 600 oC for 1hr. The result from this route shows that zeolite Na-LSX with cubic rounded edge crystal habit have been successfully synthesised. Finally, The kinetic study indicated the suitability of the zeolite Na-LSX for the removal of Cu2+, Fe3+, Pb2+ and Zn2+ ions from synthetic wastewater.
Alkan, M., Hopa, C., Yilmaz, Z., & Guler, H. (2005). The effect of alkali concentration and solid/liquid ratio on the hydrothermal synthesis of zeolite NaA from natural kaolin. Microporous and Mesoporous Materials, 86, 176-184.
Ayele, L., Perez-Pariente, J., Chebude, Y., & Diaz, I. (2015). Synthesis of zeolite a from Ethiopian kaolin. Microporous and Mesoporous Materials, 215, 29-36.
Bellotto, M., Gualtieri, A., Artioli, G., & Clark, S. M. (1995). Kinetic study of the kaolinite-mullite reaction sequence. Part I: kaolinite dehydroxylation. Physics and Chemistry of Minerals, 22(4), 207-214.
Breck, D. W. (1974). Zeolite Molecular Sieves: Structure, Chemistry and Use. 1st ed. New York: John Wiley.
Brindley, G. W., & Nakahira, M. (1959). The kaolin-mullite reaction series: I, a survey of outstanding problems. Journal of the American Ceramic Society, 42, 311-314.
Doaa, M., & Mohamed, S. (2014). Removal of Pb2+ from water by using Na-Y zeolite s prepared from Egyptian kaolins collected from different sources. Journal of Environmental Chemical Engineering, 2, 723-730.
Georgiev, D., Bogdanov, B., Angelova, K., Markovska, I., & Hristov, Y. (2009). Synthetic Zeolites Structure, Classification, Current Trends in Zeolite Synthesis Review. International Science Conference. Stara Zagora, Bulgaria.
Gougazeh, M., & Buhl, C. H. (2010). Geochemical and mineralogical characterization of the jabal al-harad kaolin deposit, Southern Jordan for its possible utilization clay miner. Mineralogical Society, 45(4), 281-294.
Ibrahim, H. S., Jamil, T., & Eman, Z. H. (2010). Application of zeolite prepared from Egyptian kaolin for the removal of heavy metals: II. Isotherm models. Journal of Hazardous Materials, 182, 842-847.
Jamil, S. T., Ibrahim, H. S., Abd E. I., & El-Wakeel, T. (2010). Application of zeolite prepared from Egyptian kaolin for removal of heavy metals: I. Optimum conditions. Desalination, 258, 34-40.
Kovo, A. S., & Holmes, S. M. (2010). Effect of aging on the synthesis of kaolin-based zeolite Y from Ahoko Nageria using a novel metakaolnization technique. Journal of Dispersion Science.Technology, 31, 442-448.
Lambert, J. F., Minman, W. S., & Fripiat, J. J. (1989). Revisiting kaolin dehydroxylation: A silicon-29 and aluminum-27 MAS NMR study. Journal of the American Chemical Society, 111, 3517-3522.
Lussier, R. (1991). A novel clay-based catalytic material-preparation and properties. Journal of Catalysis, 129(1), 225-237.
Mackenzie, R. C. (1971). Differential thermal analysis 1. Analytica Chimica Acta, 53(1), 221.
Madani, A., Aznar, A., Sanz, J., & Serratosa, J. M. (1989). 29Si and 27Al NMR study of zeolite formation from alkali-leached kaolins. Influence of thermal preactivation. Journal of Physical Chemistry, 94, 760-765.
Murray, H. H. (2007). Applied Clay Mineralogy, Occurrences, Processing and Application of Kaolins, Bentonites, Palygorskite-Sepiolite, and Common Clays. 1st ed. Oxford: Elsevier’s Science and Technology.
Perraki, T., & Orfanoudaki, A. (2004). Mineralogical study of zeolites from Pentalofos area. Applied Clay Science, 25, 9.
Petrov, I., & Michalev, T. (2012). Synthesis of zeolite: A review. University of ruse. Union of Scientists Ruse, 51, 30-35. Available from: http://www.uni-ruse.bg; http://www.uni-ruse.bg/suruse.
Querol, X., Plana, F., Alastuey, A., & Lopez-Soler, A. (1997). Synthesis of Na-zeolite s from fly ash. Fuel, 76, 793-799.
Rios, C. A., Williams, C. D., & Maple, M. J. (2007). Synthesis of zeolites and zeotypes by hydrothermal transportation of kaolin and metakaolin. BISTUA, 5(1), 15-26.
Rondón, W., Freire, D., Benzo, Z., Sifontes, A., González, Y., Valero, M., & Brito, J. L. (2013), Application of 3A zeolite prepared from Venezuelan kaolin for removal of Pb (II) from wastewater and its determination by flame atomic absorption spectrometry. American Journal of Analytical Chemistry, 4, 584-593.
Saija, L. M., Ottana, R., & Zipelli, C. (1983). Zeolitization of pumice in ashsodium salt solutions. Materials Chemistry and Physics, 8, 207-216.
Szoztak, R. (1998). Molecular Sieves: Principles of Synthesis and Identification. 2nd ed. London: Blackie Academic and Professional.
Tanaka, H., Miyagawa, A., Eguchi, B., & Hino, V. R. (2004). Synthesis of a pure-form Zeolite Na-LSX from coal fly ash by dialysis. Journal of Industrial and Engineering Chemistry, 43, 6090-6094.
Walek, T. T., Saito, F., & Zhang, Q. (2008). The effect of low solid/liquid ratio on hydrothermal synthesis of zeolites from fly ash. Fuel, 87, 3194-3199.
Wang, C. F., Li, J. S., Wang, L. J., & Sun, X. Y. (2008). Influence of NaOH concentrations on synthesis of pure-form zeolite a from fly ash using two-stage method. Journal of Hazardous Materials, 155, 58-64.
Zhao, H., Deng, Y., Harsh, J. B., Flury, M., & Boyle, J. S. (2004). Alteration of kaolin to cancrinite and sodalite by simulated hanford tank waste and its impact on cesium retention. Clays and Clay Minerals, 52, 1-13.
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