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KMID : 1024520140230111843
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Journal of the Environmental Sciences
2014 Volume.23 No. 11 p.1843 ~ p.1850
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Removal of Cu(II) and Pb(II) by Solid-Phase Extractant Prepared by Immobilizing D2EHPA with Polysulfone
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Kam Sang-Kyu
Jeon Jin-Wo
Lee Min-Gyu
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Abstract
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PS-D2EHPA beads were prepared by immobilizing di-2-ethylhexyl-phosphoric acid (D2EHPA) with polysulfone
(PSf). The removal experiments of Cu(II) and Pb(II) by the prepared PS-D2EHPA beads were conducted batchwise. The
removal efficiency of Cu(II) and Pb(II) by PS-D2EHPA beads was increased with increasing pH of solution. The
removal rate of Cu(II) and Pb(II) was well described by the pseudo-second-order kinetic model. The maximum removal
capacity of Cu(II) and Pb(II) obtained from Langmuir isotherm were 2.58 mg/g and 12.63 mg/g, respectively. External
mass transfer coefficients for the removal of Cu(II) and Pb(II) by PS-D2EHPA beads were obtained 0.61×10-2
5.87×10-2 /min and 1.55×10-2 8.53×10-2 /min, respectively and diffusion coefficients were obtained 1.32×10-4
3.98×10-4 cm2/min and 1.80×10-4 2.28×10-4 cm2/min, respectively.
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KEYWORD
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D2EHPA, Polysulfone, Immobilization, Cu(II), Pb(II), Extractant
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