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A basic study on the recovery of Ni, Cu, Fe, Zn ions from wastewater with the spent catalyst  

Lee Hyo Sook (한국지질자원연구원, 자원활용소재연구부)
Oh Yeung Soon (한국지질자원연구원, 자원활용소재연구부)
Lee Woo Chul (한국지질자원연구원, 자원활용소재연구부)
Publication Information
Resources Recycling / v.13, no.2, 2004 , pp. 3-8 More about this Journal
Abstract
A basic study on the recovery of heavy metals such as Zn, Ni, Cu and Fe ions from wastewater was carried out with the spent iron oxide catalyst, which was used in the Styrene Monomer(SM) production company. The heavy metals could be recovered more than 98％ with the spent iron oxide catalyst. The alkaline components of the spent catalyst could be precipitated the metal ions of the wastewater as metal hydroxides at the higher pH 10.6 in Ni, pH 8.0 in Cu, pH 6.5 in Fe, pH 8.5 in Zn. But the metal ions are adsorbed physically on the surface of the spent catalyst in the range of the pH of the metal hydroxides and pH 3.0, which is the isoelectric point of the iron oxide catalyst.
Keywords
spent catalyst; heavy metal; recovery; metal-plating wastewater; iron oxide;
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