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KMID : 1024520150240070841
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Journal of the Environmental Sciences
2015 Volume.24 No. 7 p.841 ~ p.849
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Removal Characteristics of Cu(II) by Solid Phase Extractant Immobilized with D2EHPA and TBP in Styrene Acrylonitrile Copolymer (SAN)
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Kam Sang-Kyu
Lee Min-Gyu
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Abstract
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The solid phase extractant SAN-D2EHPA/TBP containing two extractants of Di-(2-ethylhexyl)phosphoric acid (D2EHPA) and Tri-butyl-phosphate (TBP) was prepared by immobilizing two exractants D2EHPA and TBP in styrene acrylonitrile copolymer (SAN). The prepared SAN-D2EHPA/TBP was characterized by using fourier transform infrared spectrometer (FTIR) and scanning electron microscopy (SEM). The solid phase extractant SAN-D2EHPA/TBP was tested for the removal of Cu(II) from aqueous solution. Experiments were carried out as a function of the pH and Cu(II) concentration in the aqueous phase. The equilibrium time was 180 min and equilibrium experiment data obeyed the pseudo-second-order kinetic model. The Langmuir isotherm model represented the experiment data as well. The maximum removal capacity of Cu(II) calculated from Langmuir isotherm model was 3.1 mg/g.
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KEYWORD
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Copper, Solid-phase extractant, Di-(2-ethylhexyl) phosphoric acid (D2EHPA), Tri-butyl-phosphate (TBP), Styrene acrylonitrile copolymers (SAN)
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