Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Adsorption Behaviors of Nickel Ion on the Manganese Dioxide Powder

이산화망간 미립자(微粒子)의 니켈이온 흡착(吸着) 거동(擧動)

  • Baek, Mi-Hwa (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Kim, Min-Kyung (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Kim, Dong-Su (Mineral & Material Processing Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Sohn, Jeong-Soo (Mineral & Material Processing Division, Korea Institute of Geoscience and Mineral Resources)
  • 백미화 (이화여자대학교 환경공학과) ;
  • 김민경 (이화여자대학교 환경공학과) ;
  • 김동수 (한국지질자원연구원 자원활용소재연구부) ;
  • 손정수 (한국지질자원연구원 자원활용소재연구부)
  • Published : 2008.02.27
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Abstract

The adsorption features of nickel ion in wastewater on manganese dioxide from spent batteries were investigated for its usage as an adsorbent. The aquatic behavior of nickel ion was characterized by MINTEQ program and the considered influential variables on the adsorption of nickel ion were its initial concentration, reaction temperature, the amount of adsorbent, and pH. The adsorption ratio of nickel ion decreased with increasing its initial concentration and thermodynamic estimation has been carried out based on the adsorption characteristics of nickel ion depending on temperature. In addition, the adsorption of nickel ion was shown to be promoted according to the amount of manganese dioxide and a lot of nickel ions were adsorbed as the solution pH was raised.

본 연구에서는 폐건전지에 함유되어 있는 이산화망간을 재활용하는 방안을 검토하고자 니켈함유 폐수의 흡착 처리시 흡착제로서 이산화망간을 사용하여 그 특성을 조사하였다. 수중에서 니켈 이온의 거동을 MINTEQ프로그램을 이용하여 조사하고, 흡착질의 초기농도, 반응온도, 그리고 흡착제의 양 및 pH변화에 따른 흡착 특성의 변화양상을 검토하였다. 흡착실험의 결과로부터 흡착질인 $Ni^{2+}$의 초기농도가 증가할수록 흡착량이 감소함을 알 수 있었고, 온도에 따른 $Ni^{2+}$의 흡착특성을 열역학적으로 고찰하였다. 또한 흡착제인 이산화망간의 양이 증가함에 따라 흡착량이 증가하는 것으로 나타났으며, pH가 증가함에 따라 평형흡착량은 증가하는 것으로 조사되었다.

Keywords

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