Adsorption and Preconcentration of Some Heavy Metals by Resorcinol-Formaldehyde Resin

Resorcinol-formaldehyde 수지에 의한 중금속 이온의 흡착과 농축

  • 박찬일 (인하대학교 이과대학 화학과) ;
  • 차기원 (인하대학교 이과대학 화학과)
  • Received : 1997.11.14
  • Published : 1998.06.01

Abstract

A chelating resin was prepared by the reaction of formaldehyde and resorcinol. It possesses high adsorption selectivity for transition metal ions such as Pb(II) and Ni(II). The adsorption and desorption yields of Pb(II), Ni(II), Co(II), Fe(II) and Zn(II) were determined using batch method. The significant characteristics of the chelating resin is the exchange processes between its hydrogen and metal ions. The mechanism of metal adsorption and desorption seems to be the competing protonation and complexation reaction of the functional group of the resin. This resin was applied to the rapid concentration of trace amounts of these metal ions and to the separation of Pb(II) from other metal ions in bulk solution.