Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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A study on the removal of As, Sb, Bi from the copper sulfate solutions by Ion exchange resin containing Aminophosphosphonic acid as a functional group

황산동용액(黃酸銅溶液)에서 Aminophosphosphonic acid 관능기를 가진 이온교환수지에 의한 As, Sb, Bi 제거(除去)에 관한 연구(硏究)

  • Received : 2012.07.04
  • Accepted : 2012.08.08
  • Published : 2012.10.30
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Abstract

A comparative study has been carried out on the removal of impurities such As, Sb, Bi from the copper sulfate solution by ion exchange resin containing aminophosphosphonic acid as functional group. The various parameters which affect the removal of impurities; such as the reaction temperature, the reaction time, the amount of ion-exchange resins, the concentration of sulfuric acid in electrolyte, were studied. The basic experimental results showed that about 88% of Sb & 94% of Bi can be adsorbed in these chelate resins and removed from the copper sulfate solutions but As was removed below 10% from the solutions. And the selective elution of Bi and Sb from the adsorbed ion exchange resin also can be achieved by $H_2SO_4$ or HCl solutions. The results also showed that 98.1% of Sb and 96.6% of Bi can be adsorbed from the copper sulfate solutions after 2 Bed-volume of continuous ion exchange column test.

황산동 용액중에 불순물로 존재하는 Sb, Bi 및 As를 제거하기 위해 Aminophosphosphonic acid를 관능기로 함유한 이온교환수지를 사용하여 비교 실험을 실시하였다. 이들 불순물 제거 반응에 영향을 미칠 수 있는 반응온도, 반응시간, 이온교환수지양 등에 대하여 고찰하였다. 기초 실험 결과 약 88%의 Sb 및 94%의 Bi가 이온교환수지에 흡착되어 황산동용액으로부터 제거가 가능하였다. 그러나 As의 경우는 제거율이 10% 이하로 미미하였다. 한편, Bi 와 Sb가 흡착된 수지에서 황산과 염산용액을 이용하여 선택적으로 세출이 가능하였다. 연속흡착실험 결과 Sb 와 Bi의 경우는 2BV 후에는 98.1%와 96.6%의 높은 흡착율을 보였다.

Keywords

References

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