Adsorption Characteristics of Nickel and Zinc Ion on Domestic Activated Carbon

활성탄에 의한 니켈 및 아연 이온의 흡착특성

  • Chan-Kuk Kim (Department of Chemistry, Dongguk University) ;
  • Tae-Won Min (Department of Chemistry, Dongguk University)
  • 김찬국 (동국대학교 이과대학 화학과) ;
  • 민태원 (동국대학교 문리과학대학 화학과)
  • Published : 1984.04.20

Abstract

The adsorption characteristics of heavy metal ions $(Ni^{2+}$, $Zn^{2+}$) on domestic activated carbon which manufactured from the wood, waste rubber and coal has been studied. The following conclusions were obtained by investigating the effect of pH, halides, cyanide and temperature on the absorption of heavy metal ions and by determining absorption rate and absorption isotherms. When heavy metal ions were adsorbed on activated carbon in the pH range from 6 to 7, treated heavy metal ions were almost come to the equilibrium and recovered in the form of complex anions such as $MX_4^{2- }$and $M(CN)_4^{2-}$ in an hour. The absorption isotherms of heavy matel ions were well fitted in Freundlich's equation. Heavy metal complex anions on activated carbon were easily eluted by using 0.1N HCl solution. These results suggest that the complex anions have unexpectedly strong affinity for the surface of activated carbon.

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