Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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The Effect of Temperature on the Stable Region of Magnesium Ion in Aqueous System

수중 마그네슘이온의 안정영역 변화에 대한 온도효과

  • Kim, Hee-Jin (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Kim, Dong-Su (Department of Environmental Science and Engineering, Ewha Womans University)
  • 김희진 (이화여자대학교 환경공학과) ;
  • 김동수 (이화여자대학교 환경공학과)
  • Received : 2011.02.24
  • Accepted : 2011.06.11
  • Published : 2011.07.30
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Abstract

Magnesium is one of the abundant natural resources in the earth crust and seawater, which is directly related to various organisms activities interconnecting with water-rock system. In aqueous system, magnesium is known to predominantly exist in the form of $Mg^{2+}$ ion which is verified in its $E_h-pH$ diagram. When it is at equilibrium in aqueous system, temperature takes an essential role to complete equilibrium states. This study represents the change of the stable region of magnesium ion according to temperature, and how the consequences would affect aquatic organisms. It was revealed that there is a noticeable tendency shrinking the stable region of magnesium ion in a diagram as temperature increases, and as a result, aquatic bio-species presumably have difficulties to absorb the nutrient. Also, it was considered that the water system would be acidified by decreasing alkalinity.

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References

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