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http://dx.doi.org/10.5322/JES.2005.14.9.881

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

Lee Chang-Han (SamYeong Environment Technology Co)
Ahn Kab-Hwan (School of Environmental Science, Catholic University of Pusan)
Publication Information
Journal of Environmental Science International / v.14, no.9, 2005 , pp. 881-888 More about this Journal
Abstract
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.
Keywords
Waste activated sludge; Equilibrium; Kinetics; Dye; Rhodamine B; Biosorption;
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