Artículos de revistas
Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites
Fecha
2020-03-01Registro en:
Chemical Engineering and Technology, v. 43, n. 3, p. 564-573, 2020.
1521-4125
0930-7516
10.1002/ceat.201900203
2-s2.0-85078936524
Autor
Faculty of Materials and Chemical Engineering
Institute of Chemical Sciences
Universidade Estadual Paulista (Unesp)
Universidade Federal de Mato Grosso do Sul (UFMS)
Institución
Resumen
Adsorption of dibenzothiophene (DBT) from model oil was investigated using composites of pure activated charcoal and pure bentonite clay. DBT adsorption was carried out in batch mode experiments at laboratory scale, where the developed composite materials showed a synergistic effect in removal of DBT from the model oil in terms of improved surface acidity of the pure activated charcoal and mesoporous structure of the pure bentonite clay. Thermodynamics, kinetics, and optimization of various adsorption parameters were investigated. Kinetic analyses proved that DBT adsorption followed pseudo-second-order kinetics. To study the thermodynamics of the adsorption, different isotherm adsorption models were applied. The Langmuir isotherm best fitted to the adsorption data. Various thermodynamic parameters were evaluated, including Gibbs free energy, entropy, and enthalpy.