Zero valent iron/poly(amidoxime) adsorbent for the separation and reduction of U(VI)

Dadong Shao; Xiangxue Wang; Xiaolin Wang; Sheng Hu; Tasawar Hayat; Ahmed Alsaedi; Jiaxing Li; Suhua Wang; Xiangke Wang; Jun Hu

doi:10.1039/c6ra10817b

Zero valent iron/poly(amidoxime) adsorbent for the separation and reduction of U(VI)

Dadong Shao
, Xiangxue Wang
, Xiaolin Wang
, Sheng Hu
, Tasawar Hayat
, Ahmed Alsaedi
, Jiaxing Li
, Suhua Wang
, Xiangke Wang
, Jun Hu

China Academy of Engineering Physics
Soochow University
Faculty of Sciences, King Abdulaziz University
Quaid-I-Azam University
North China Electric Power University

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

31 Scopus citations

Abstract

A magnetic nanocomposite of zero valent iron (ZVI)/poly(amidoxime) (PAO) was prepared by polymerization of acrylonitrile on the ZVI surface, followed by hydroxylamine (NH₂OH) treatment to convert the cyano group (-CN) into an amidoxime group (AO). The characterization results showed that PAO-stabilized ZVI magnetic composite (denoted as ZVI/PAO) was prepared successfully. ZVI/PAO was used as an adsorbent for the separation of U(vi) from solutions. The effect of environmental conditions on U(vi) adsorption onto ZVI/PAO was studied in detail. U(vi) adsorption on the ZVI/PAO surface reached equilibrium within 3 h, and the adsorption process is well described by the pseudo-second-order kinetics model. Adsorption isotherms of U(vi) on the ZVI/PAO surface can be well fitted by the Langmuir model, and the maximum adsorption capacity was calculated to be 206 mg g^-1 at T = 298 K and pH = 5.0. Experimental results highlighted the application of ZVI/PAO as an adsorbent for the efficient separation of U(vi) and reduction of U(vi) to U(iv) from aqueous solutions.

Original language	English
Pages (from-to)	52076-52081
Number of pages	6
Journal	RSC Advances
Volume	6
Issue number	57
DOIs	https://doi.org/10.1039/c6ra10817b
State	Published - 2016
Externally published	Yes

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10.1039/c6ra10817b

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title = "Zero valent iron/poly(amidoxime) adsorbent for the separation and reduction of U(VI)",

abstract = "A magnetic nanocomposite of zero valent iron (ZVI)/poly(amidoxime) (PAO) was prepared by polymerization of acrylonitrile on the ZVI surface, followed by hydroxylamine (NH2OH) treatment to convert the cyano group (-CN) into an amidoxime group (AO). The characterization results showed that PAO-stabilized ZVI magnetic composite (denoted as ZVI/PAO) was prepared successfully. ZVI/PAO was used as an adsorbent for the separation of U(vi) from solutions. The effect of environmental conditions on U(vi) adsorption onto ZVI/PAO was studied in detail. U(vi) adsorption on the ZVI/PAO surface reached equilibrium within 3 h, and the adsorption process is well described by the pseudo-second-order kinetics model. Adsorption isotherms of U(vi) on the ZVI/PAO surface can be well fitted by the Langmuir model, and the maximum adsorption capacity was calculated to be 206 mg g-1 at T = 298 K and pH = 5.0. Experimental results highlighted the application of ZVI/PAO as an adsorbent for the efficient separation of U(vi) and reduction of U(vi) to U(iv) from aqueous solutions.",

author = "Dadong Shao and Xiangxue Wang and Xiaolin Wang and Sheng Hu and Tasawar Hayat and Ahmed Alsaedi and Jiaxing Li and Suhua Wang and Xiangke Wang and Jun Hu",

note = "Publisher Copyright: {\textcopyright} 2016 The Royal Society of Chemistry.",

year = "2016",

doi = "10.1039/c6ra10817b",

language = "English",

volume = "6",

pages = "52076--52081",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

number = "57",

}

TY - JOUR

T1 - Zero valent iron/poly(amidoxime) adsorbent for the separation and reduction of U(VI)

AU - Shao, Dadong

AU - Wang, Xiangxue

AU - Wang, Xiaolin

AU - Hu, Sheng

AU - Hayat, Tasawar

AU - Alsaedi, Ahmed

AU - Li, Jiaxing

AU - Wang, Suhua

AU - Wang, Xiangke

AU - Hu, Jun

PY - 2016

Y1 - 2016

N2 - A magnetic nanocomposite of zero valent iron (ZVI)/poly(amidoxime) (PAO) was prepared by polymerization of acrylonitrile on the ZVI surface, followed by hydroxylamine (NH2OH) treatment to convert the cyano group (-CN) into an amidoxime group (AO). The characterization results showed that PAO-stabilized ZVI magnetic composite (denoted as ZVI/PAO) was prepared successfully. ZVI/PAO was used as an adsorbent for the separation of U(vi) from solutions. The effect of environmental conditions on U(vi) adsorption onto ZVI/PAO was studied in detail. U(vi) adsorption on the ZVI/PAO surface reached equilibrium within 3 h, and the adsorption process is well described by the pseudo-second-order kinetics model. Adsorption isotherms of U(vi) on the ZVI/PAO surface can be well fitted by the Langmuir model, and the maximum adsorption capacity was calculated to be 206 mg g-1 at T = 298 K and pH = 5.0. Experimental results highlighted the application of ZVI/PAO as an adsorbent for the efficient separation of U(vi) and reduction of U(vi) to U(iv) from aqueous solutions.

AB - A magnetic nanocomposite of zero valent iron (ZVI)/poly(amidoxime) (PAO) was prepared by polymerization of acrylonitrile on the ZVI surface, followed by hydroxylamine (NH2OH) treatment to convert the cyano group (-CN) into an amidoxime group (AO). The characterization results showed that PAO-stabilized ZVI magnetic composite (denoted as ZVI/PAO) was prepared successfully. ZVI/PAO was used as an adsorbent for the separation of U(vi) from solutions. The effect of environmental conditions on U(vi) adsorption onto ZVI/PAO was studied in detail. U(vi) adsorption on the ZVI/PAO surface reached equilibrium within 3 h, and the adsorption process is well described by the pseudo-second-order kinetics model. Adsorption isotherms of U(vi) on the ZVI/PAO surface can be well fitted by the Langmuir model, and the maximum adsorption capacity was calculated to be 206 mg g-1 at T = 298 K and pH = 5.0. Experimental results highlighted the application of ZVI/PAO as an adsorbent for the efficient separation of U(vi) and reduction of U(vi) to U(iv) from aqueous solutions.

UR - https://www.scopus.com/pages/publications/84971654731

U2 - 10.1039/c6ra10817b

DO - 10.1039/c6ra10817b

M3 - Article

AN - SCOPUS:84971654731

SN - 2046-2069

VL - 6

SP - 52076

EP - 52081

JO - RSC Advances

JF - RSC Advances

IS - 57

ER -

Zero valent iron/poly(amidoxime) adsorbent for the separation and reduction of U(VI)

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