Preparation and adsorption of phosphorus by new heteropolyacid salt–lanthanum oxide composites

Wei, Tan, Guizhen, Li, Tianli, Wang, Min, Yang, Jinhui, Peng, Barrow, Colin J., Wenrong, Yang and Wang, Hongbin 2016, Preparation and adsorption of phosphorus by new heteropolyacid salt–lanthanum oxide composites, Desalination and water treatment, vol. 57, no. 17, pp. 7874-7880, doi: 10.1080/19443994.2015.1085455.

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Title Preparation and adsorption of phosphorus by new heteropolyacid salt–lanthanum oxide composites
Author(s) Wei, Tan
Guizhen, Li
Tianli, Wang
Min, Yang
Jinhui, Peng
Barrow, Colin J.ORCID iD for Barrow, Colin J.
Wenrong, YangORCID iD for Wenrong, Yang
Wang, Hongbin
Journal name Desalination and water treatment
Volume number 57
Issue number 17
Start page 7874
End page 7880
Total pages 7
Publisher Taylor & Francis
Place of publication London, Eng
Publication date 2016
ISSN 1944-3994
Keyword(s) Lanthanum oxide
Heteropolyacid salt
Summary In this article, we reported a new method in which molybdenum heteropolyacid salt was selected to mix with lanthanum oxide and bentonite, respectively, and the dipping method was used to prepare the new composites of heteropolyacid salt–lanthanum oxide, heteropolyacid salt–bentonite, and heteropolyacid salt–lanthanum oxide–bentonite. We observed that the composites have a better removal effect for phosphorus by control of the ratio and calcination temperature. The effect of quantity, adsorption time, phosphorus wastewater concentration, and pH value of composites on phosphorus adsorption was studied. We also found that the removal rate of phosphorus by the composite of heteropolyacid salt–lanthanum oxides increases up to 99.1% under the condition of 1:1 mass ratio and 500°C of calcination temperature. IR and XRD studies suggest that molybdenum heteropolyacid salt has been loaded to lanthanum oxide carrier successfully and heteropolyacid salt keeps the original Keggin structure. Heteropolyacid salt–lanthanum oxide has a good adsorption effect on phosphorus under the condition of 0.15 g of the composite, 90 min of adsorption time, phosphorus concentration of 50 mg L−1, and pH value of 3. The adsorption of phosphorus corresponds with the Langmuir isotherm model and Lagergren first-order kinetics equation. Therefore, the composite has excellent absorption ability and was competent in removing phosphorus with a low concentration from aqueous solution. It could be a great potential adsorbent for the removal of phosphorus in lakes, rivers, and reservoirs.
Language eng
DOI 10.1080/19443994.2015.1085455
Field of Research 039901 Environmental Chemistry (incl Atmospheric Chemistry)
0904 Chemical Engineering
0905 Civil Engineering
0907 Environmental Engineering
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Balaban Desalination Publications
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