Adsorption of phosphate from aqueous solution by hydrous zirconium oxide

Synthetic ZrO₂·nH₂O was used for phosphate removal from aqueous solution. The optimum adsorbent dose obtained for phosphate adsorption on to hydrous zirconium oxide was 0.1 g. The kinetic process was described very well by a pseudo-second-order rate model. The phosphate adsorption tended to increase...

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Bibliographic Details
Published in:	Environmental technology Vol. 33; no. 12; pp. 1345 - 1351
Main Authors:	Rodrigues, Liana Alvares, Maschio, Leandro José, Coppio, Luciana de Simone Cividanes, Thim, Gilmar Patrocínio, Pinto da Silva, Maria Lúcia Caetano
Format:	Journal Article
Language:	English
Published:	Abingdon Taylor & Francis 01-06-2012 Taylor & Francis Ltd
Subjects:	Adsorbents Adsorption Applied sciences Aqueous solutions Chemical engineering desorption environmental technology Exact sciences and technology Hydrogen-Ion Concentration hydrous zirconium oxide Kinetics Mathematical models phosphate Phosphates Phosphates - isolation & purification Pollution Spectrophotometry, Infrared temperature Thermodynamics Water Pollutants, Chemical - isolation & purification zirconium Zirconium - chemistry Zirconium oxides British Isles Phosphates hydrous zirconium oxide Second order Adsorption Adsorption capacity pH phosphate Desorption Kinetics Aqueous solution Modeling
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Summary:	Synthetic ZrO₂·nH₂O was used for phosphate removal from aqueous solution. The optimum adsorbent dose obtained for phosphate adsorption on to hydrous zirconium oxide was 0.1 g. The kinetic process was described very well by a pseudo-second-order rate model. The phosphate adsorption tended to increase with the decrease in pH. The adsorption capacity increased from 61 to 66 mg g⁻¹ when the temperature was increased from 298 to 338 K. A phosphate desorption of approximately 74% was obtained using water at pH 12.
Bibliography:	http://dx.doi.org/10.1080/09593330.2011.632651 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1479-487X 0959-3330 1479-487X
DOI:	10.1080/09593330.2011.632651