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Physico - Chemical and Mineralogical Characterization of a Moroccan Bentonite (Azzouzet) and Determination of its Nature and its Chemical Structure

Received: 17 January 2014     Published: 20 March 2014
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Abstract

This study concerns the results of Physicochemical and mineralogical characterization of a Moroccan bentonite (bentonite Azzouzet) and determination of its nature and its chemical structure. Several techniques were used; in particular X-ray diffraction (XRD), scanning electron microscopy coupled with EDX microanalysis (SEM-EDX), differential thermal and gravimetric analyses (DTA-TGA) and finally infrared Fourier transform (FTIR) and X-ray fluorescence (XRF). The bentonite fine fraction (< 2 µm in size), was characterized by BET method for specific surface area, and a cation- exchange capacity.The X-ray diffraction analysis supplemented by gravimetric analysis showed that Azzouzet bentonite is primarily (smectite) (49 wt %) with the presence of feldspar (34 wt %), Quartz (5 wt %), magnetite (7 wt %) and amorphous iron oxide (3 wt %). It has a cation- exchange capacity of 73,3 meq/100g and a specific surface area by using surface area analyser and N2 gaz was used as adsorbate under atmosphere of 31 m²/g.the structural formula calculated for bentonite has shown that the montmorillonite has a high charge density. SEM-EDX, X-ray, chemical analysis and Infrared spectroscopy demonstrated that this montmorillonite contains iron Fe3 + in the octahedral sheet. The origin of the charge sheets is tetraedral (Si4) (Al2.12 Mg0.15), with the montmorillonite character of the bentonite (15%) is present (less than 50% octahedral charge) with a phase rich in iron.

Published in International Journal of Materials Science and Applications (Volume 3, Issue 2)
DOI 10.11648/j.ijmsa.20140302.16
Page(s) 42-48
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

XRD, (DTA-TGA) (SEM-EDX), FTIR, FX, Bentonite, Azzouzet, Montmorillonite, Morocco

References
[1] R.E.Grim, , & N.Guven, (1978). Bentonites-geology, mineralogy, properties and use. Developments in sedimentology (vol.24).New York ELSEVIER.
[2] H.H.Murray, (1991). Over view-clay mineral applications. Applied clay science, 5,379-395.
[3] H.H.Murray, (2000). Traditional and new applications for Kaolin. Smectite and playgorskite: a general overview. Applied clay science, 17,207-221.
[4] A.C.D. New man, (Editor), 1987.Chemistry of Clays and Clay Minerals, Mineralogical Society, Monogr.No.6.Longman, London, C h.1, pp.49-53.
[5] J.D.Russell, 1987. Infrared method. In: M.J. Wilson (Editor), A Handbook of Determinative Methods in Clay Mineralogy. Blackie, Glasgow, Ch.4, pp. 133-173.
[6] B. Chourabi et J.J Fripiat Clays and clay Miner (1982).
[7] N. Davison, Mc. Whinnie and Hooper Clays and clay Miner 39 N°1 (1992) 22-27.
[8] R.E Grim et G. Kulbicki – Montmorillonite : high temperature reactions and classification- Amer. Miner, 46 (1961), 1329-1369.
[9] Green et R. Kelly – the montmorillonite Minerals, in Makenzie R.C. The differential thermal investigation of clays. Mineralogical Society – London (1957) p.140-164.
[10] N.Trauth et J.Lucas  Bulletin du groupe français des argiles Tome XIX – Fascicule 2 – 1968.
[11] RC.Mackenzie, S.Caillére, (1975) thermal characteristics of soil minerals, In: gieseking, J.E (Ed), soil components vol.2.springer-verlag, new york, pp.529-571.
[12] N.D.Todor, (1976). Thermal analysis of minerals. Abacus pren, kent, UK, 256 pp.
[13] J.Madejova, P.Komadel, B.ciel, (1994) Infrared study of octaedral site population in smectites.clay Miner.29,319-326.
[14] S.P. Zhdanov, A.V. Kiselev, V.I. Lygin, M.E. Ovsepyan and T.I. Titova (1965), Zh. Fiz. Khim. 39, 2554.
[15] A. Tabak, B. Afsin, B. Caglar et E. Koksal Journal of colloid and Interface Science (2007), 313, 5-11.
[16] C. Paluszkiewicz, M. Holtzer, A. Bobrowski Journal of Molecular Structure (2008) in press.
[17] J.Madejova, P.Komadel, B.ciel,(1992). Infrared spectra of some Czech and Slovak smectites and their correlations with structural formulas. Geologica carpathica, serie clays, 1, Bratislava, june 1992.pp.9-12.
[18] K.Bukka, J.D. Miller, J. Shabtai, Clays and clay Miner. 40 (1992) 92.
[19] A.Alami, M.Boulmane, M.Hajjaji, S.Kacim, (1998).Chemico-mineralogical study of a Moroccan clay. Ann. Chem. Sci. Master.23,173 -176.
[20] B. Tyagi, C.D. Chudasama, R.V. Jasra, Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy 64 (2006) 273-278.
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    Azzeddine Er-ramly, Abdelali Ider. (2014). Physico - Chemical and Mineralogical Characterization of a Moroccan Bentonite (Azzouzet) and Determination of its Nature and its Chemical Structure. International Journal of Materials Science and Applications, 3(2), 42-48. https://doi.org/10.11648/j.ijmsa.20140302.16

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    ACS Style

    Azzeddine Er-ramly; Abdelali Ider. Physico - Chemical and Mineralogical Characterization of a Moroccan Bentonite (Azzouzet) and Determination of its Nature and its Chemical Structure. Int. J. Mater. Sci. Appl. 2014, 3(2), 42-48. doi: 10.11648/j.ijmsa.20140302.16

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    AMA Style

    Azzeddine Er-ramly, Abdelali Ider. Physico - Chemical and Mineralogical Characterization of a Moroccan Bentonite (Azzouzet) and Determination of its Nature and its Chemical Structure. Int J Mater Sci Appl. 2014;3(2):42-48. doi: 10.11648/j.ijmsa.20140302.16

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  • @article{10.11648/j.ijmsa.20140302.16,
      author = {Azzeddine Er-ramly and Abdelali Ider},
      title = {Physico - Chemical and Mineralogical Characterization of a Moroccan Bentonite (Azzouzet) and Determination of its Nature and its Chemical Structure},
      journal = {International Journal of Materials Science and Applications},
      volume = {3},
      number = {2},
      pages = {42-48},
      doi = {10.11648/j.ijmsa.20140302.16},
      url = {https://doi.org/10.11648/j.ijmsa.20140302.16},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20140302.16},
      abstract = {This study concerns the results of Physicochemical and mineralogical characterization of a Moroccan bentonite (bentonite Azzouzet) and determination of its nature and its chemical structure. Several techniques were used; in particular X-ray diffraction (XRD), scanning electron microscopy coupled with EDX microanalysis (SEM-EDX), differential thermal and gravimetric analyses (DTA-TGA) and finally infrared Fourier transform (FTIR) and X-ray fluorescence (XRF). The bentonite fine fraction (< 2 µm in size), was characterized by BET method for specific surface area, and a cation- exchange capacity.The X-ray diffraction analysis supplemented by gravimetric analysis showed that Azzouzet bentonite is primarily (smectite) (49 wt %) with the presence of feldspar (34 wt %), Quartz (5 wt %), magnetite (7 wt %) and amorphous iron oxide (3 wt %). It has a cation- exchange capacity of 73,3 meq/100g and a specific surface area by using surface area analyser and N2 gaz was used as adsorbate under atmosphere of 31 m²/g.the structural formula calculated for bentonite has shown that the montmorillonite has a high charge density. SEM-EDX, X-ray, chemical analysis and Infrared spectroscopy demonstrated that this montmorillonite contains iron Fe3 + in the octahedral sheet. The origin of the charge sheets is tetraedral (Si4) (Al2.12 Mg0.15), with the montmorillonite character of the bentonite (15%) is present (less than 50% octahedral charge) with a phase rich in iron.},
     year = {2014}
    }
    

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  • TY  - JOUR
    T1  - Physico - Chemical and Mineralogical Characterization of a Moroccan Bentonite (Azzouzet) and Determination of its Nature and its Chemical Structure
    AU  - Azzeddine Er-ramly
    AU  - Abdelali Ider
    Y1  - 2014/03/20
    PY  - 2014
    N1  - https://doi.org/10.11648/j.ijmsa.20140302.16
    DO  - 10.11648/j.ijmsa.20140302.16
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
    SP  - 42
    EP  - 48
    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.20140302.16
    AB  - This study concerns the results of Physicochemical and mineralogical characterization of a Moroccan bentonite (bentonite Azzouzet) and determination of its nature and its chemical structure. Several techniques were used; in particular X-ray diffraction (XRD), scanning electron microscopy coupled with EDX microanalysis (SEM-EDX), differential thermal and gravimetric analyses (DTA-TGA) and finally infrared Fourier transform (FTIR) and X-ray fluorescence (XRF). The bentonite fine fraction (< 2 µm in size), was characterized by BET method for specific surface area, and a cation- exchange capacity.The X-ray diffraction analysis supplemented by gravimetric analysis showed that Azzouzet bentonite is primarily (smectite) (49 wt %) with the presence of feldspar (34 wt %), Quartz (5 wt %), magnetite (7 wt %) and amorphous iron oxide (3 wt %). It has a cation- exchange capacity of 73,3 meq/100g and a specific surface area by using surface area analyser and N2 gaz was used as adsorbate under atmosphere of 31 m²/g.the structural formula calculated for bentonite has shown that the montmorillonite has a high charge density. SEM-EDX, X-ray, chemical analysis and Infrared spectroscopy demonstrated that this montmorillonite contains iron Fe3 + in the octahedral sheet. The origin of the charge sheets is tetraedral (Si4) (Al2.12 Mg0.15), with the montmorillonite character of the bentonite (15%) is present (less than 50% octahedral charge) with a phase rich in iron.
    VL  - 3
    IS  - 2
    ER  - 

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Author Information
  • Department of Applied Chemistry & Environment, Faculty of Sciences and Technologies of Settat, University Hassan 1er Morocco

  • Department of Applied Chemistry & Environment, Faculty of Sciences and Technologies of Settat, University Hassan 1er Morocco

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