Synthesis of Nano - Fe0 / PEI Composite and Its Reduction and Chelation Mechanisms for Cr(VI) from Aqueous Solution

Zhuannian Liu, Yuanyuan Liu, Chun-Hsing Ho, Yongmei Liu, Xiuyan Jing, Aihua Cheng

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper, a nano-Fe0/polyethyleneimine (PEI) composite was synthesized via nano-Fe0 and PEI cross-linked by glutaraldehyde. The removal rate of Cr(VI) by nano-Fe0/PEI composite was investigated and compared with that of Pb(II) and Ni(II). The effects of reacting time, dosage, initial concentration, pH value, and coexisting heavy metal on removal rates of Cr(VI), Pb(II), and Ni(II) are discussed. The characteristics of nano-Fe0/PEI composite and its removal mechanism for Cr(VI) were analyzed by scanning electron microscope (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). The results show that the removal rate of Cr(VI) (92.6%) by nano-Fe0/PEI composite is obviously higher than that of Pb(II) (60.2%) and Ni(II) (23.8%). nano-Fe0/PEI composite is effective for Cr(VI) removal. The heavy-metal ions coexisting in the mixture solution have a remarkable effect on the removal of Cr(VI). The paper concludes that Cr(VI) was reduced into Cr(III) by nano-Fe0 before chelating with PEI.

Original languageEnglish (US)
Article number04018004
JournalJournal of Environmental Engineering (United States)
Volume144
Issue number3
DOIs
StatePublished - Mar 1 2018

Fingerprint

Polyethyleneimine
chelation
Chelation
aqueous solution
Composite materials
Heavy metals
Heavy Metals
heavy metal
Heavy ions
FTIR spectroscopy
Glutaral
Fourier transform infrared spectroscopy
Metal ions
chromium hexavalent ion
removal
Electron microscopes
X-ray diffraction
Scanning
X ray diffraction
electron

Keywords

  • Chelating
  • Composite
  • Cr(VI)
  • Nano - Fe
  • Polyethyleneimine (PEI)
  • Reduction

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Civil and Structural Engineering
  • Environmental Science(all)

Cite this

Synthesis of Nano - Fe0 / PEI Composite and Its Reduction and Chelation Mechanisms for Cr(VI) from Aqueous Solution. / Liu, Zhuannian; Liu, Yuanyuan; Ho, Chun-Hsing; Liu, Yongmei; Jing, Xiuyan; Cheng, Aihua.

In: Journal of Environmental Engineering (United States), Vol. 144, No. 3, 04018004, 01.03.2018.

Research output: Contribution to journalArticle

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abstract = "In this paper, a nano-Fe0/polyethyleneimine (PEI) composite was synthesized via nano-Fe0 and PEI cross-linked by glutaraldehyde. The removal rate of Cr(VI) by nano-Fe0/PEI composite was investigated and compared with that of Pb(II) and Ni(II). The effects of reacting time, dosage, initial concentration, pH value, and coexisting heavy metal on removal rates of Cr(VI), Pb(II), and Ni(II) are discussed. The characteristics of nano-Fe0/PEI composite and its removal mechanism for Cr(VI) were analyzed by scanning electron microscope (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). The results show that the removal rate of Cr(VI) (92.6{\%}) by nano-Fe0/PEI composite is obviously higher than that of Pb(II) (60.2{\%}) and Ni(II) (23.8{\%}). nano-Fe0/PEI composite is effective for Cr(VI) removal. The heavy-metal ions coexisting in the mixture solution have a remarkable effect on the removal of Cr(VI). The paper concludes that Cr(VI) was reduced into Cr(III) by nano-Fe0 before chelating with PEI.",
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