Application of Statistical Design Approach to Develop a Low Cost Activated Carbon for the Removal of Textile Dye Direct Blue-86 / Jayanta Kumar Basu & Monal Dutta
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International Journal of Environment & DevelopmentSummary: An activated carbon was prepared by carbonization of Acacia Auriculiformis scrap wood followed by activation through microwave heating. The carbonization process was optimized through response surface methodology with three independent process variables such as carbonization temperature, carbonization time and nitrogen flowrate. The optimum values of these variables were found to be 750 °C, of 3.5 h and of 300 ml/min respectively. The activated carbon was used for the removal of direct blue-86 dye from its aqueous solution. The adsorption kinetics was fitted well with pseudo second order rate model. The equilibrium data was well described by Langmuir isotherm and the corresponding monolayer adsorption capacity was found to be 476.19 mg/g. The changes in standard Gibbs free energy, enthalpy and entropy were determined as 8.58, 16.14 kJ/mol and 24.61 kJ/mol. The value of activation energy was found to be 16.6 kJ/mol
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Library, SPAB | Journal Bound Volume | v. 8(1-2) / Jan-Dec 2011 | Not for loan | J000306 |
An activated carbon was prepared by carbonization of Acacia Auriculiformis scrap wood followed by activation through microwave heating. The carbonization process was optimized through response surface methodology with three independent process variables such as carbonization temperature, carbonization time and nitrogen flowrate. The optimum values of these variables were found to be 750 °C, of 3.5 h and of 300 ml/min respectively. The activated carbon was used for the removal of direct blue-86 dye from its aqueous solution. The adsorption kinetics was fitted well with pseudo second order rate model. The equilibrium data was well described by Langmuir isotherm and the corresponding monolayer adsorption capacity was found to be 476.19 mg/g. The changes in standard Gibbs free energy, enthalpy and entropy were determined as 8.58, 16.14 kJ/mol and 24.61 kJ/mol. The value of activation energy was found to be 16.6 kJ/mol
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