Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites. Issue 3 (3rd February 2020)

• Record Type: Journal Article
• Authors: Ullah, Sana; Hussain, Sajjad; Ahmad, Waqas; Khan, Hammad; Khan, Khurram Imran; Khan, Saad Ullah; Khan, Sabir
• Is Part Of: Chemical engineering & technology. Volume 43:Issue 3(2020)
• Page Start: 564
• Page End: 573
• Publication Date: 2020-02-03
• Subjects: Activated charcoal -- Adsorption -- Bentonite clay -- Desulfurization -- Dibenzothiophene; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201900203
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: 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. Abstract : Organosulfur compounds poison catalysts used in the processing of petroleum and are also responsible for SOx production. Composites of activated charcoal and bentonite clay were prepared for efficient adsorption of dibenzothiophene from model oil, providing significantly higher adsorption rates. Thermodynamics, kinetics, and optimization of various adsorption parameters were evaluated.