Adsorption of Hg(II) in aqueous solution by magnetic graphene oxide grafted polymaleicamide dendrimer nanohybrids

In this study, the adsorption property of magnetic graphene oxide grafted 3.0 generations polymaleicamide dendrimer (GO/Fe 3 O 4 -g-G3.0) nanohybrids for Hg(II) in aqueous solution was investigated by batch experiments and magnetic separation technology. The results showed that Hg(II) ions were part...

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Bibliographic Details
Published inSeparation science and technology Vol. 54; no. 15; pp. 2409 - 2417
Main Authors Ma, Ying-Xia, Kou, Ya-Lan, Jin, Peng-Sheng, Shao, Wen-Jie, Li, Xin
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 13.10.2019
Taylor & Francis Ltd
Subjects
Adsorption
Aqueous solutions
Graphene
Hg(II)
Iron oxides
Kinetic equations
Magnetic graphene oxide
Magnetic properties
Magnetic separation
mechanism
Mercury
Mercury compounds
polymaleicamide
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Summary:In this study, the adsorption property of magnetic graphene oxide grafted 3.0 generations polymaleicamide dendrimer (GO/Fe 3 O 4 -g-G3.0) nanohybrids for Hg(II) in aqueous solution was investigated by batch experiments and magnetic separation technology. The results showed that Hg(II) ions were partially reduced to Hg(I) in the adsorption process, the solution pH value had a major impact on Hg(II) adsorption, and the higher temperature was beneficial to the adsorption of GO/Fe 3 O 4 -g-G3.0. The adsorption kinetic was well-fitted by the pseudo-second-order kinetic equation and the Langmuir adsorption isotherm model correlated well with adsorption equilibrium data.
ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2018.1547313