Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 89: Issue 1
Using thermally activated hydrotalcite for the uptake of phosphate from aqueous media
Authors:
R. Frost Queensland University of Technology Inorganic Materials Research Program, School of Physical and Chemical Sciences GPO Box 2434 Brisbane Queensland 4001 Australia

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A. Musumeci Queensland University of Technology Inorganic Materials Research Program, School of Physical and Chemical Sciences GPO Box 2434 Brisbane Queensland 4001 Australia

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M. Adebajo Queensland University of Technology Inorganic Materials Research Program, School of Physical and Chemical Sciences GPO Box 2434 Brisbane Queensland 4001 Australia

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W. Martens Queensland University of Technology Inorganic Materials Research Program, School of Physical and Chemical Sciences GPO Box 2434 Brisbane Queensland 4001 Australia

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Pages:
95–99
Online Publication Date:
11 Aug 2006
Publication Date:
01 Jul 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-005-7478-x
Keywords:
nanochemistry; phosphate removal; pyroaurite; thermal analysis; thermally activated hydrotalcite
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Abstract  

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 � for pH 9.3, to 7.88 � 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.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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