Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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The Effect of Inorganic Electrolyte on the Electrokinetic Features of Calcium Carbonate Particles in Aqueous Environment

수중 탄산칼슘 입자의 전기적 거동에 미치는 무기염류의 영향

  • O, Se-Jin (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Choi, Eun-Jin (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Kim, Dong-Su (Department of Environmental Science and Engineering, Ewha Womans University)
  • 오세진 (이화여자대학교 환경학과) ;
  • 최은진 (이화여자대학교 환경학과) ;
  • 김동수 (이화여자대학교 환경학과)
  • Received : 2009.09.15
  • Accepted : 2009.12.14
  • Published : 2010.01.30
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Abstract

The electrokinetic potential of $CaCO_3$, which takes an important part in aquatic system, has been measured and the variation of total energy between $CaCO_3$ particles with the distance of particles was estimated based on DLVO theory. The electrokinetic potential of particles was observed to increase to positive direction as the charge valence of cations which was added to suspension was increased. Also, the total interaction energy between particles was estimated to be more negative as the charge valence of cation was higher and its concentrations was raised. When a mixture of cations with different charge valences was added, the influence of cation with a higher charge valence was more significant on the total interaction energy between particles. When anion was added to the suspension of $CaCO_3$, the total energy estimated by DLVO theory was examined to move to positive direction and the electrokinetic potential of particles became more negative. Likewise cations, the effect of anions on the electrokinetic potential of particles and total interaction energy between them was observed to be proportional to their charge valence and the influence of the mixture of anions with different charge valence became more remarkable as the mixing ratio of the anion with a higher charge valence was increased.

Keywords

References

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