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Preparation of Solid-Phase Extractant by Immobilizing Di-(2-ethylhexyl)phosphoric Acid (D2EHPA) and Tri-butyl-phosphate (TBP) in Polysulfone and Removal Characteristics of Cu(II)

Polysulfone에 추출제 Di-(2-ethylhexyl)phosphoric acid (D2EHPA)와 tri-butyl-phosphate(TBP)를 고정화한 고체상 추출제의 제조와 Cu(II)의 제거 특성

  • Kam, Sang-Kyu (Department of Environmental Engineering, Jeju National University) ;
  • Jeon, Jin-Woo (Department of Chemical Engineering, Pukyong National University) ;
  • Lee, Min-Gyu (Department of Chemical Engineering, Pukyong National University)
  • Received : 2014.08.06
  • Accepted : 2014.09.02
  • Published : 2015.01.30

Abstract

The solid-phase extractant PS-D2EHPA/TBP was prepared by immobilizing two extractants D2EHPA and TBP in polysulfone (PS). The prepared PS-D2EHPA/TBP was characterized by using fourier transform infrared spectrometer (FTIR) and scanning electron microscopy (SEM). The removal of Cu(II) from aqueous solution was investigated in batch system. The experiment data were obeyed the pseudo-second-order kinetic model. Equilibrium data were well fitted by Langmuir model and the removal capacity of Cu(II) by solid extractant PS-D2EHPA/TBP obtained from Langmuir model was 3.11 mg/g at 288 K. The removal capacity of Cu(II) was increased according to increasing pH from 2 to 6, but the removal capacity was decreased below pH 3 remarkably.

Keywords

Copper;Solid-phase extractant;Di-(2-ethylhexyl) phosphoric acid (D2EHPA);Tri-butyl-phosphate (TBP);Immobilization;Polysulfone (PS)

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