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Journal of Materials Science

, Volume 42, Issue 14, pp 5799–5804 | Cite as

Comparison of the fluoride, arsenate and nitrate anions water depollution potential of a calcined quintinite, a layered double hydroxide compound

  • Fabian DelormeEmail author
  • Alain Seron
  • Anne Gautier
  • Catherine Crouzet
Article

Abstract

The potential for removing anionic pollutants such as F, HAsO 4 2− , and NO 3 from water by mixed oxides issued from the moderate thermal treatment of quintinite (Mg4Al2 LDH) has been studied. This compound shows good trapping properties for F and HAsO 4 2− , and a low potential for NO 3 , due to the competition with OH. The competition between these three anions and CO 3 2− has been envisaged and shows that CO 3 2− is able to easily replace F and NO 3 , making the mixed oxides issued from MgAl LDH an inappropriate trap for F and NO 3 . However, only small amounts of arsenic are released after the CO 3 2− introduction in water. Moreover, arsenates are able to replace carbonates even at lower concentrations. This means that HAsO 4 2− anions present a stronger affinity than CO 3 2− for the LDH structure. This makes mixed oxides issued from MgAl LDH very promising materials for the removal of arsenic in polluted waters.

Keywords

Arsenic Fluoride Mixed Oxide Layered Double Hydroxide Carbonate Anion 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Fabian Delorme
    • 1
    Email author
  • Alain Seron
    • 2
  • Anne Gautier
    • 3
  • Catherine Crouzet
    • 3
  1. 1.MMA/MEPBRGMOrleans Cedex 2France
  2. 2.EPI/PROBRGMOrleans Cedex 2France
  3. 3.MMA/MSEBRGMOrleans Cedex 2France

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