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Reference type: Journal
Authors: Ren YM, Wei XZ, Zhang ML
Article Title: Adsorption character for removal Cu(II) by magnetic Cu(II) ion imprinted composite adsorbent.
Publication date: 2008
Journal: Journal of Hazardous Materials
Volume: 158
Issue: (1)
Page numbers: 14-22.
DOI: 10.1016/j.jhazmat.2008.01.044

Abstract: A novel magnetic Cu(II) ion imprinted composite adsorbent (Cu(II)-MICA) was synthesized, characterized and applied for the selective removal Cu(II) from aqueous solution in the batch system. The adsorption-desorption and selectivity characteristics were investigated. The maximum adsorption occurred at pH 5-6. The equilibrium time was 6.0h, and a pseudo-second-order model could best describe adsorption kinetics. The adsorption equilibrium data fit Langmuir isotherm equation well with a maximum adsorption capacity of 46.25mg/g and Langmuir adsorption equilibrium constant of 0.0956L/mg at 298K. Thermodynamic parameters analysis predicted an exothermic nature of adsorption and a spontaneous and favourable process that could be mainly governed by physisorption mechanism. The relative selectivity coefficients of Cu(II)-MICA for Cu(II)/Zn(II) and Cu(II)/Ni(II) were 2.31, 2.66 times greater than the magnetic non-imprinted composite adsorbent (MNICA). Results suggested that Cu(II)-MICA was a material of efficient, low-cost, convenient separation under magnetic field and could be reused five times with about 14% regeneration loss
Template and target information: Copper ion, Cu(II)
Author keywords: Magnetic adsorbent, Cu(II) ion imprinted, adsorption, Heavy metals

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