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KMID : 0382420010270020138
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Korean Journal of Environmental Health Society
2001 Volume.27 No. 2 p.138 ~ p.144
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A Study on the Adsorption of Pb ( II ) Using Natural Clays
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Kim Kang-Woo
Lee Han-Seob
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Abstract
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This study was carried out to investigate characteristics and Pb(Ⅱ) removal effect of natural clays in the batch mode test. The effect of parameters such as temperature, adsorption time and coexisting cations on the sorption ability and characteristics was investigated to find out whether the clays could be used as adsorbents. Several natural clays from domestic have been investigated to have high specific surface area and have minerals such as SiO_2 and Al_2O_3.
As a result, removal effects of Pb(Ⅱ) on clays were reached at equilibrium in aqueous solutions by stirring about 20minutes. The removal effect of Pb(Ⅱ) was best for Kang Jin clay than other clays in terms of fixed time. Adsorption efficiency was not influenced by the temperature, but slightly increased at lower temperature. When other cation such Cu(Ⅱ) or Zn(Ⅱ) coexisted with Pb(Ⅱ), the adsorption amount of Pb(Ⅱ) decreased because of the competing adsorption. The results show the possibility of continuous treatment system of wastewater which contain heavy metals by using natural clays from domestic.
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