Adsorption of turquoise blue QG reactive bye commercial activated carbon in batch reactor: kinetic and equilibrium studies

Brazilian Journal of Chemical Engineering

D. Schimmel²  K. C. Fagnani²  J. B. Oliveira Dos Santos²  M. A. S. D. Barros¹  E. Antonio Da Silva² 

[1] ,Western State University of ParanáToledo PR ,Brazil

关键词: Reactive dye;    Activated carbon;    Adsorption;    Isotherm;    Kinetics;    Enthalpy of adsorption;   

DOI  :  10.1590/S0104-66322010000200007

来源: SciELO

【 摘 要 】

The adsorption of reactive turquoise blue QG dye on commercial activated carbon was investigated in a batch reactor to obtain isotherm and kinetic data under different experimental conditions. The adsorbent was characterized by a FTIR method to analyze surface area and pH PZC and to identify functional groups. Experiments were conducted to obtain equilibrium data at 30°C, with the pH effect being assayed in the range of 2 to 8. Experiments were then carried out under the optimal pH condition for dye removal to obtain equilibrium data at 30°C, 45°C and 60°C. Adsorption isotherm models were used to correlate the equilibrium data. Maximum dye removal capacity was observed at a pH of 2 and temperature of 30°C. The kinetic experiments were carried out at a pH of 2 and at three different temperatures: 30°C, 45°C and 60°C. Pseudo-second-order models were used to describe the kinetics of dye adsorption.

【 授权许可】

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