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Journal of Chemometrics

Optimisation of epsomite transformation into periclase using experimental design methodology

Authors

  • S. Behij,

    1. Centre National de Recherches en Sciences des Matériaux, Laboratoire de Valorisation des Ressources Naturelles et des Matériaux de Récupération, B.P.95 - 2050 Hammam-Lif, Tunisia
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  • K. Djebali,

    1. Centre National de Recherches en Sciences des Matériaux, Laboratoire de Valorisation des Ressources Naturelles et des Matériaux de Récupération, B.P.95 - 2050 Hammam-Lif, Tunisia
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  • H. Hammi,

    Corresponding author
    1. Centre National de Recherches en Sciences des Matériaux, Laboratoire de Valorisation des Ressources Naturelles et des Matériaux de Récupération, B.P.95 - 2050 Hammam-Lif, Tunisia
    • Centre National de Recherches en Sciences des Matériaux, Laboratoire de Valorisation des Ressources Naturelles et des Matériaux de Récupération, B.P.95 - 2050 Hammam-Lif, Tunisia.
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  • A. H. Hamzaoui,

    1. Centre National de Recherches en Sciences des Matériaux, Laboratoire de Valorisation des Ressources Naturelles et des Matériaux de Récupération, B.P.95 - 2050 Hammam-Lif, Tunisia
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  • A. M'nif

    1. Centre National de Recherches en Sciences des Matériaux, Laboratoire de Valorisation des Ressources Naturelles et des Matériaux de Récupération, B.P.95 - 2050 Hammam-Lif, Tunisia
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Abstract

In this work, the experimental design methodology is applied to optimise MgO production from magnesium sulphate salt. This is a two-step process through an intermediate product (Brucite: Mg(OH)2). For the first step, a fractional factorial design and a centred composite one are used in order to establish appropriate experimental conditions for Mg(OH)2 obtention. The most favourable conditions for the second step to obtain MgO were determined using only a fractional factorial design. The decomposition of the optimal precipitated Mg(OH)2 was analysed by DTA/TGA and the crystallisation process was observed by XRD. The morphological properties of the MgO agglomerates were examined by SEM. Copyright © 2010 John Wiley & Sons, Ltd.

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