Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Fundamental Studies for the Adsorption Features of Malachite Green on Granular Activated Carbon

활성탄에 의한 말라카이트 그린 흡착 특성에 관한 기초연구

  • Baek, Mi-Hwa (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Choi, Young-Jin (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Kim, Young-Ji (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Kim, Dong-Su (Department of Environmental Science and Engineering, Ewha Womans University)
  • 백미화 (이화여자대학교 환경공학과) ;
  • 최영진 (이화여자대학교 환경공학과) ;
  • 김영지 (이화여자대학교 환경공학과) ;
  • 김동수 (이화여자대학교 환경공학과)
  • Received : 2008.11.20
  • Accepted : 2009.02.14
  • Published : 2009.05.30
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Abstract

The adsorption features of malachite green onto activated carbon have been investigated for its treatment from aqueous solution. The influential factors were examined the initial concentration of malachite green, reaction temperature, and pH. Under experimental conditions, adsorption equilibrium of malachite green was attained within 2 hr after the adsorption started. The adsorption reaction of malachite green followed the pseudo-second order rate model, and the adsorption rate constants(k2) decreased with increasing initial concentrations of malachite green. Adsorption behavior of malachite green on activated carbon was found to follow the Freundlich model well in the initial adsorbate concentration range. With increase in temperature, the adsorbed amount of malachite green at equilibrium increased, which indicate that the adsorption reaction was endothermic reaction. Thermodynamic parameters for malachite green adsorption reaction were estimated at varying temperatures, and in the pH range of 2-10, adsorption of malachite green increased.

Keywords

References

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