Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Effect of Metal Ions on the Sedimentation of Humic Acid

흄산의 침적에 미치는 금속이온의 영향

  • Park, Yeong Jae (Korea Atomic Energy Research Institute, Nuclear Environment Management Center) ;
  • Park, Kyoung Kyun (Korea Atomic Energy Research Institute, Nuclear Environment Management Center) ;
  • Chun, Kwan Sik (Korea Atomic Energy Research Institute, Nuclear Environment Management Center)
  • 박영재 (한국원자력연구소 부설원자력환경관리센터) ;
  • 박경균 (한국원자력연구소 부설원자력환경관리센터) ;
  • 전관식 (한국원자력연구소 부설원자력환경관리센터)
  • Published : 19960100
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Abstract

In the presence of metal ions(Co(Ⅱ), Ni(Ⅱ), Sr(Ⅱ), Cu(Ⅱ), Fe(Ⅲ), U(Ⅵ)), the sedimentation of humic acid was increased at constant pH with increasing metal concentration and the strength was increased in the following order: Sr < Ni < Co < Cu < Fe < U. At constant metal concentration, Cu(Ⅱ), Ni(Ⅱ), and Co(Ⅱ) ions caused an increase in sedimentation of humic acid as the solution pH increased, whereas Fe(Ⅲ) and U(Ⅵ) ions caused a decrease. Sr(Ⅱ) ions did not affect the sedimentation even with the variation of pH. The analysis of FT-IR spectra for the sediments prepared from the reaction between humic acid and metal ions showed that metal ions were bound to humic acid to form complexes, suggesting that the metal complexation plays an important role in the sedimentation of humic acid.

일정한 pH에서 Co(II), Ni(II), Sr(II), Cu(II), Fe(III) 및 U(VI) 등의 금속이온농도가 증가할 수록 흄산의 침적율이 증가하였으며, Sr

Keywords

References

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