Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Recovery of Nickel from sulfuric acid solution using Lewatit TP 220 ion exchange resin

황산용액(黃酸溶液)으로부터 이온교환수지(交換樹脂) Lewatit TP 220에 의한 니켈의 회수(回收)

  • Kang, Nam-Hee (Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)) ;
  • Park, Kyung-Ho (Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)) ;
  • Parhi, P.K. (Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources (KIGAM))
  • 강남희 (한국지질자원연구원 광물자원연구본부) ;
  • 박경호 (한국지질자원연구원 광물자원연구본부) ;
  • Received : 2001.06.14
  • Accepted : 2011.10.19
  • Published : 2011.12.31
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Abstract

The adsorption of nickel(Ni) from sulfuric acid solution was carried out by ion exchange method. A series of batch tests in synthetic solutions were carried out using Lewatit Monoplus TP 220 resin. The following experimental parameters, such as temperature, shaking rate, reaction time, pH, resin dosage and concentration of nickel ions etc. were investigated to establish the effective optimum conditions of nickel adsorption. The solution pH(2.0~5.0) and shaking rate had little effects on the adsorption of nickel and adsorption time of 72hours was required to reach equilibrium. The experimental results show a good agreement with Feundlich isotherm and pseudo-second order reaction. The adsorption behavior of Ni obtained from synthetic solution was compared with that of waste electroplating solution. Elution of nickel from loaded resin increased with increase in $H_2SO_4$ concentration.

황산용액 중에 존재하는 니켈을 회수하기 위해 이온교환수지법을 이용한 기초연구를 수행하였다. 제조된 모의 니켈(Ni)용액에 독일 Lanxess사(社)의 Lewatit Monoplus TP 220를 이용하여 회분식 실험을 하였다. 흡착반응에 영향을 미치는 온도, 교반속도, 반응시간, pH, 이온교환수지 양, 니켈이온농도 등에 대해 고찰하였다. 초기 pH(2.0~5.0)와 교반속도는 니켈의 흡착에 거의 영향을 미치지 않았으며, 평형에 도달하기 위하여 72시간의 시간이 필요했다. 평형실험결과 Freundlich 흡착등온식에 적합하였고, 흡착반응속도는 유사 2차 반응 모델(pseudo-second order)로 잘 모사되었다. 한편 니켈을 함유한 실제 도금세정폐액의 흡착 실험을 행하여 모의용액의 흡착거동과 비교하였고, 흡착된 니켈은 황산 농도가 높아짐에 따라 수지로부터 효과적으로 용리되었다.

Keywords

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