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Adsorption of Cr(VI) in waste water by functional superparamagnetic PGMA polymer microspheres with amino groups

  • Peng Fei Li
  • , Liang Rong Yang
  • , Wen Song Li
  • , Yin Bin Huang
  • , Juan Wang
  • , Peng Kong
  • , Lin Xu
  • , Hui Zhou Liu*
  • *Corresponding author for this work
  • CAS - Institute of Process Engineering
  • University of Chinese Academy of Sciences

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

Abstract

Micron-sized monodisperse superparamagnetic polyglycidyl methacrylate (PGMA) particles with functional amino groups were prepared and characterized by SEM, FT-IR and XRD, respectively. The effect of pH value on the adsorption was studied. Their adsorption properties and mechanism for Cr(VI) from wastewater were investigated. In a model system, the adsorption process followed the Langmuir adsorption isotherm, and the maximum sorption capacity of was calculated to be 263.16 mg/g at 308 K and pH 4.5. The adsorption of Cr(VI) capacity reached equilibrium within 15 min and followed pseudo second order kinetics. The adsorption was a spontaneous and endothermic process with ΔH0=9.63 kJ/mol.

Original languageEnglish
Pages (from-to)554-560
Number of pages7
JournalGuocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering
Volume11
Issue number4
Publication statusPublished - Aug 2011
Externally publishedYes

Keywords

  • Adsorption
  • Amino group
  • Cr(VI)
  • Monodispersion
  • PGMA
  • Superparamagnetism

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