• Adsorption Behaviors and Mechanism of Single/Multi-Metals by  Ion Exchange Resins

  • Xinping Qian, Shaohui Lin, Xianshe Feng*, Garry L. Rempel*, Henry Grace*, and Qinmin Pan†

  • Green Polymer and Catalysis Technology Laboratory, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu Province, People’s Republic of China

    *Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada

  • 이온 교환 수지에 대한 금속 이온의 흡착 거동 및 메카니즘 연구
Abstract

Adsorption of Fe(Ш), Co(II), Cu(II), Zn(II) and K(I) by strong acid resins, Dowex 50WX2 200-400 (H) and Amberlite IRP-69, was studied to investigate the adsorption behaviors and mechanism in single-metal and multi-metal systems. The results showed that 99.9% Fe(III) can be removed by Dowex 50WX2 200-400 (H) in 100 min ([Fe(Ш)] < 40 mg/L, resin amount = 50 mg, pH = 3.0, 60 ºC). Mechanism studies revealed that Langmuir model and pseudo-second-order kinetic equation illustrate better fit for the adsorption of Fe(Ш). Furthermore, the investigations on multi-metal adsorption indicated that resins display a similar adsorption ratio for the same-valence metal ions (Co(II) = Cu(II) = Zn(II)), and a more selective adsorption for high-valence metal ions than low-valence metal ions (Fe(III) > Co(II) > K(I)). The above results can be used for the treatment of wastewater and the recovery of metals from the spent catalysts.


Keywords: adsorption, ion exchange, metal, kinetic, separation

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2019; 43(6): 862-871

    Published online Nov 25, 2019

  • 10.7317/pk.2019.43.6.862
  • Received on Jun 19, 2019
  • Revised on Sep 2, 2019
  • Accepted on Sep 9, 2019

Correspondence to

  • Qinmin Pan

  • Green Polymer and Catalysis Technology Laboratory, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu Province, People’s Republic of China

  • E-mail: qpan@suda.edu.cn