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Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites
Author(s) -
Ullah Sana,
Hussain Sajjad,
Ahmad Waqas,
Khan Hammad,
Khan Khurram Imran,
Khan Saad Ullah,
Khan Sabir
Publication year - 2020
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201900203
Subject(s) - adsorption , bentonite , dibenzothiophene , gibbs free energy , langmuir adsorption model , enthalpy , chemistry , mesoporous material , thermodynamics , materials science , flue gas desulfurization , activated charcoal , chemical engineering , organic chemistry , catalysis , physics , engineering
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.