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Biosorption and Flotation of Lead and Chromium using Waste Activated Sludge

폐 활성슬러지를 이용한 납과 크롬의 생체흡착 및 부상

  • 이창한 (부산가톨릭대학교 환경공학과)
  • Published : 2009.10.28

Abstract

We have investigated biosorption kinetics and equilibrium of $Pb^2+$ and $Cr^2+$ using waste sludge, and separation efficiency of waste sludge by dissolved air flotation was evaluated in the various A/S ratio. The biosorption capacity and contact time were shown as a simulation of biosorption equilibrium and kinetics models. Biosorption equilibrium of the $Pb^2+$ and $Cr^2+$ onto the waste sludge could be fitted by the Langmuir, Freundlich, Redlich-Peterson, and Koble-Corrigan equation. The kinetics could be fitted by a pseudo-second-order rate equation more than a pseudo-first-order rate equation. The separation efficiency of waste sludge using DAF was kept above 90%.

Keywords

Biosorption;Heavy Metal;Pb;Cr;DAF;Waste Sludge

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