Using thermally activated hydrotalcite for the uptake of phosphate from aqueous media

Frost, R. L., Musumeci, A. W., Adebajo, M. O. and Martens, W. (2007). Using thermally activated hydrotalcite for the uptake of phosphate from aqueous media. In: Symposium on International of Fluides Complexes and the Polymer held in Conjunction with the 37th Meeting of Calorimetry and Thermal Analysis, Pau, France, (95-99). 2 June 2006. doi:10.1007/s10973-005-7478-x


Author Frost, R. L.
Musumeci, A. W.
Adebajo, M. O.
Martens, W.
Title of paper Using thermally activated hydrotalcite for the uptake of phosphate from aqueous media
Conference name Symposium on International of Fluides Complexes and the Polymer held in Conjunction with the 37th Meeting of Calorimetry and Thermal Analysis
Conference location Pau, France
Conference dates 2 June 2006
Journal name Journal of Thermal Analysis and Calorimetry   Check publisher's open access policy
Place of Publication Akademiai Kiado
Publisher Budapest, Hungary
Publication Year 2007
Sub-type Fully published paper
DOI 10.1007/s10973-005-7478-x
Open Access Status
ISSN 1572-8943
1388-6150
Volume 89
Issue 1
Start page 95
End page 99
Total pages 5
Language eng
Formatted Abstract/Summary
Hydrotalcites of formula Mg6A12(OH)16(PO4)·4H2O formed by intercalation with the phosphate anion as a function of pH show variation in the d-spacing attributed to the size of the hydrated anion in the interlayer. The value changes from 11.91 Å for pH 9.3, to 7.88 Å at pH 12.5. No crystalline hydrotalcites with phosphate in the interlayer were formed at pH 9.3. Thermal decomposition identifies three steps namely dehydration, dehydroxylation and some loss of carbonate during the thermal treatment. The addition of a thermally activated ZnAl-HT to a phosphate solution resulted in the uptake of the phosphate and the reformation of the hydrotalcite. The technology has the potential for water purification through anion removal.
Keyword Nanochemistry
Phosphate removal
Pyroaurite
Thermal analysis
Thermally activated hydrotalcite
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Special Chapter of the Journal of Thermal Analysis and Calorimetry (JTAC) dedicated to Professor Jean-Pierre E. Grolier. Includes author manuscripts from the Sympsium International de Thermodynamique des Fluides Complexes et des Polymeres, in conjunction with the 37th Journées de Calorimétrie et d’Analyse Thermique.

 
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