Biosorption of Rhodamine B onto Waste Activated Sludge: Equilibrium and Kinetic Modelling

폐 활성슬러지를 이용한 Rhodamine B의 생체흡착:흡착평혀여 및 흡착속도 모델링

  • Lee Chang-Han (SamYeong Environment Technology Co) ;
  • Ahn Kab-Hwan (School of Environmental Science, Catholic University of Pusan)
  • 이창한 (삼영이엔테크(주)) ;
  • 안갑환 (부산가톨릭대학교 환경과학부)
  • Published : 2005.09.01


The biosorption of dye, Rhodamine B(Rh-B), onto waste activated sludge was investigated. The biosorption capacity and contact time were shown as a simulation of dye adsorption equilibrium and kinetics models. We observed that biosorption of Rh-B occurred rapidly less than 4 hr. These experimental data could be better fitted by a pseudo-second-order rate equation than a pseudo-first-order rate equation. The equilibrium dependence between biosorption capacity and initial concentration of Rh-B was estimated and it was found that the equilibrium data of biosorption were fitted by four kinds of model such as Langmuir, Freundlich, Redlich-Peterson, and Koble-Corrigan model. The average percentage errors, $\varepsilon(\%)$, observed between experimental and predicted values by above each model were $21.19\%,\;9.97\%,\;10.10\%\;and\;11.76\%$, respectively, indicating that Freundlich and Redlich-Peterson model could be fitted more accrately than other models.


Waste activated sludge;Equilibrium;Kinetics;Dye;Rhodamine B;Biosorption


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