The Adsorption and Elution Characteristics of Copper Ions in Electrochemical Ion Exchange Electrode Fabricated by the Compressed Diecasting

압착성형법으로 제작된 전기화학적 이온교환 전극에서 구리이온의 흡착과 용출특성

  • Received : 1998.03.05
  • Accepted : 1998.04.15
  • Published : 1998.08.10

Abstract

Electrochemical Ion Exchang(EIX) electrode containing Amberlite IRP-64 as a cation ion exchange resin and Stylene-Buthylene-Rubber(SBR) as a binder was fabricated by the compressed diecasting method. The adsorption and elution characteristics in copper sulfate solution were investigated at the various electrode potentials and electrolyte pHs. In the adsorption process, it was found that the maximum adsorption rate of copper was obtained at -1800 mV and the ratio of adsorption was 92% during 90 min. In the elution process, the elution rate of copper was increased in proportion to anodic potential in the present experimental range and the ratio of elution was 88% during 50 mins at 3600 mV. The adsorption and elution processes were significantly affected by the variation of local pH in the vicinity of electrochemical ion exchange electrode. The higher performances of adsorption and elution were elution were obtained at basic and acidic eletrolytes.

Keywords

Electrochemical Ion Exchange;Adsorption;Elution Process

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