Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Removal of Cd(II) and Pb(II) Ions in water by the Ulva pertusa and Sargassum horneri

Ulva pertusa 및 Sargassum horneri를 이용한 수중 Cd(II) 및 Pb(II) 이온의 제거

  • 김영하 (강릉대학교 환경과학연구소) ;
  • 박미아 (강릉대학교 공업화학과) ;
  • 박수인 (서울시립대학교 화학공학과) ;
  • 김택제 (경기대학교 화학과) ;
  • 이기창 (명지대학교 화학공학과)
  • Published : 1998.12.01
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Abstract

Heavy metal ions in water were removed using algal biomass as adsorbents. Absorbents were dried for 3 days, ground them by 40~60 mesh and then were swelled in a buffer solution for 1hr. After being packed in the column, commercially available standard solution of Cd(II) and Pb(II) ions were diluted to get the suitable concentration and then it was eluted with the rate of 1mι/min. Heavy metals on the adsorbents were recovered with nitric acid. More amounts of Cd(II) or Pb(II) ions in green algae, Ulva pertusa, than in brown algae, Sargassum horneri, were adsorbed. Pb(II) ion was adsorbed more than Cd(II) ion in both algae. The pH effect of adsorbed amounts of Cd(II), Pb(II) ions on the biomass was shown the following order ; pH 10.5 ＞ 8.5 ＞ 7.0 ＞ 5.5 ＞ 3.5. Recovery ratio of metal ions front algae is shown higher in acidic or neutral conditions than it in alkalic ones. Pb(II) ion is recovered relatively more than Cd(II) ion in our system.

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