Successive removal of Pb2+ and Congo red by magnetic phosphate nanocomposites from aqueous solution

Fan Zhang; Xiaoxiu Tang; Jing Lan; Yuxiong Huang

doi:10.1016/j.scitotenv.2018.12.291

Successive removal of Pb²⁺ and Congo red by magnetic phosphate nanocomposites from aqueous solution

Fan Zhang, Xiaoxiu Tang, Jing Lan, Yuxiong Huang

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

The successive removal of Pb²⁺ and Congo red (CR) from aqueous solution by three magnetic phosphate nanocomposites (Fe₃O₄@Sr₅(PO₄)₃(OH), Fe₃O₄@Ba₃(PO₄)₂, and Fe₃O₄@Sr_5xBa_3x(PO₄)₃(OH), denominated FSP, FBP, and FSBP, respectively) was systematically investigated in comparison with Fe₃O₄ (denominated F) nanoparticle. FSP, FSBP, F, and FBP exhibited a high removal capacity of 351, 272, 76, and 23 mg/g for Pb²⁺, respectively. These materials could be reclaimed by magnetic separation and then used for successive CR remediation, showing a high CR removal capacity of 224, 163, 126, and 61 mg/g, respectively. The isothermal and kinetic behavior fitted well with the Langmuir model and pseudo-second-order model, respectively. The successive removal mechanism by these magnetic phosphates was proposed to be the ion exchange between Pb²⁺ and Sr²⁺ in the lattice and then the loaded Pb²⁺ could contact with anionic dye CR to form precipitation on the surface of materials, inhibiting the leaching of Pb²⁺ ions from the reclaimed materials back into water. In addition, these materials showed good reusability and practical application. This study demonstrated the potential of these low cost phosphate nanocomposites as promising materials for successive removal of Pb²⁺ and CR from water.

Original language	English (US)
Pages (from-to)	1139-1149
Number of pages	11
Journal	Science of the Total Environment
Volume	658
DOIs	https://doi.org/10.1016/j.scitotenv.2018.12.291
State	Published - Mar 25 2019

Bibliographical note

Funding Information:
This work was financially supported by the Natural Science Foundation of China (Grant No. 51402153 ), the Natural Science Foundation of Jiangsu Province (Grant No. SBK2017020336 ), and the Fundamental Research Funds for the Central Universities (Grant No. KYZ201747 ).

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Dye
Heavy metal
Magnetic phosphate nanocomposites
Successive removal
Water treatment

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title = "Successive removal of Pb2+ and Congo red by magnetic phosphate nanocomposites from aqueous solution",

abstract = "The successive removal of Pb2+ and Congo red (CR) from aqueous solution by three magnetic phosphate nanocomposites (Fe3O4@Sr5(PO4)3(OH), Fe3O4@Ba3(PO4)2, and Fe3O4@Sr5xBa3x(PO4)3(OH), denominated FSP, FBP, and FSBP, respectively) was systematically investigated in comparison with Fe3O4 (denominated F) nanoparticle. FSP, FSBP, F, and FBP exhibited a high removal capacity of 351, 272, 76, and 23 mg/g for Pb2+, respectively. These materials could be reclaimed by magnetic separation and then used for successive CR remediation, showing a high CR removal capacity of 224, 163, 126, and 61 mg/g, respectively. The isothermal and kinetic behavior fitted well with the Langmuir model and pseudo-second-order model, respectively. The successive removal mechanism by these magnetic phosphates was proposed to be the ion exchange between Pb2+ and Sr2+ in the lattice and then the loaded Pb2+ could contact with anionic dye CR to form precipitation on the surface of materials, inhibiting the leaching of Pb2+ ions from the reclaimed materials back into water. In addition, these materials showed good reusability and practical application. This study demonstrated the potential of these low cost phosphate nanocomposites as promising materials for successive removal of Pb2+ and CR from water.",

keywords = "Dye, Heavy metal, Magnetic phosphate nanocomposites, Successive removal, Water treatment",

author = "Fan Zhang and Xiaoxiu Tang and Jing Lan and Yuxiong Huang",

note = "Funding Information: This work was financially supported by the Natural Science Foundation of China (Grant No. 51402153 ), the Natural Science Foundation of Jiangsu Province (Grant No. SBK2017020336 ), and the Fundamental Research Funds for the Central Universities (Grant No. KYZ201747 ). Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

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doi = "10.1016/j.scitotenv.2018.12.291",

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AU - Zhang, Fan

AU - Tang, Xiaoxiu

AU - Lan, Jing

AU - Huang, Yuxiong

N1 - Funding Information: This work was financially supported by the Natural Science Foundation of China (Grant No. 51402153 ), the Natural Science Foundation of Jiangsu Province (Grant No. SBK2017020336 ), and the Fundamental Research Funds for the Central Universities (Grant No. KYZ201747 ). Publisher Copyright: © 2018 Elsevier B.V.

PY - 2019/3/25

Y1 - 2019/3/25

N2 - The successive removal of Pb2+ and Congo red (CR) from aqueous solution by three magnetic phosphate nanocomposites (Fe3O4@Sr5(PO4)3(OH), Fe3O4@Ba3(PO4)2, and Fe3O4@Sr5xBa3x(PO4)3(OH), denominated FSP, FBP, and FSBP, respectively) was systematically investigated in comparison with Fe3O4 (denominated F) nanoparticle. FSP, FSBP, F, and FBP exhibited a high removal capacity of 351, 272, 76, and 23 mg/g for Pb2+, respectively. These materials could be reclaimed by magnetic separation and then used for successive CR remediation, showing a high CR removal capacity of 224, 163, 126, and 61 mg/g, respectively. The isothermal and kinetic behavior fitted well with the Langmuir model and pseudo-second-order model, respectively. The successive removal mechanism by these magnetic phosphates was proposed to be the ion exchange between Pb2+ and Sr2+ in the lattice and then the loaded Pb2+ could contact with anionic dye CR to form precipitation on the surface of materials, inhibiting the leaching of Pb2+ ions from the reclaimed materials back into water. In addition, these materials showed good reusability and practical application. This study demonstrated the potential of these low cost phosphate nanocomposites as promising materials for successive removal of Pb2+ and CR from water.

AB - The successive removal of Pb2+ and Congo red (CR) from aqueous solution by three magnetic phosphate nanocomposites (Fe3O4@Sr5(PO4)3(OH), Fe3O4@Ba3(PO4)2, and Fe3O4@Sr5xBa3x(PO4)3(OH), denominated FSP, FBP, and FSBP, respectively) was systematically investigated in comparison with Fe3O4 (denominated F) nanoparticle. FSP, FSBP, F, and FBP exhibited a high removal capacity of 351, 272, 76, and 23 mg/g for Pb2+, respectively. These materials could be reclaimed by magnetic separation and then used for successive CR remediation, showing a high CR removal capacity of 224, 163, 126, and 61 mg/g, respectively. The isothermal and kinetic behavior fitted well with the Langmuir model and pseudo-second-order model, respectively. The successive removal mechanism by these magnetic phosphates was proposed to be the ion exchange between Pb2+ and Sr2+ in the lattice and then the loaded Pb2+ could contact with anionic dye CR to form precipitation on the surface of materials, inhibiting the leaching of Pb2+ ions from the reclaimed materials back into water. In addition, these materials showed good reusability and practical application. This study demonstrated the potential of these low cost phosphate nanocomposites as promising materials for successive removal of Pb2+ and CR from water.

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KW - Water treatment

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