OLAOSEBIKAN ABIDOYE OLAFADEHAN

Scopus Publications

Integration of Machine Learning and Feature Analysis for the Optimization of Enhanced Oil Recovery and Carbon Sequestration in Oil Reservoirs
Bukola Mepaiyeda, Michal Ezeh, Olaosebikan Olafadehan, Awwal Oladipupo, Opeyemi Adebayo, et al.
Chemengineering, 2026
The dual imperative of mitigating carbon emissions and maximizing hydrocarbon recovery has amplified global interest in carbon capture, utilization, and storage (CCUS) technologies. These integrated processes hold significant promise for achieving net-zero targets while extending the productive life of mature oil reservoirs. However, their effectiveness hinges on a nuanced understanding of the complex interactions between geological formations, reservoir characteristics, and injection strategies. In this study, a comprehensive machine learning-based framework is presented for estimating CO2 storage capacity and enhanced oil recovery (EOR) performance simultaneously in subsurface reservoirs. The methodology combines simulation-driven uncertainty quantification with supervised machine learning to develop predictive surrogate models. Simulation results were used to generate a diverse dataset of reservoir and operational parameters, which served as inputs for training and testing three machine learning models: Random Forest, Extreme Gradient Boosting (XGBoost), and Artificial Neural Networks (ANN). The models were trained to predict three key performance indicators (KPIs): cumulative oil production (bbl), oil recovery factor (%), and CO2 sequestration volume (SCF). All three models exhibited exceptional predictive accuracy, achieving coefficients of determination (R2) greater than 0.999 across both training and testing datasets for all KPIs. Specifically, the Random Forest and XGBoost models consistently outperformed the ANN model in terms of generalization, particularly for CO2 sequestration volume predictions. These results underscore the robustness and reliability of machine learning models for evaluating and forecasting the performance of CO2-EOR and sequestration strategies. To enhance model interpretability and support decision-making, SHapley Additive exPlanations (SHAP) analysis was applied. SHAP, grounded in cooperative game theory, offers a model-agnostic approach to feature attribution by assigning an importance value to each input parameter for a given prediction. The SHAP results provided transparent and quantifiable insights into how geological and operational features such as porosity, injection rate, water production rate, pressure, etc., affect key output metrics. Overall, this study demonstrates that integrating machine learning with domain-specific simulation data offers a scalable approach for optimizing CCUS operations. The insights derived from the predictive models and SHAP analysis can inform strategic planning, reduce operational uncertainty, and support more sustainable oilfield development practices.
Dynamic Studies of Binary Adsorption System in Fixed Beds using Orthogonal Collocation on Finite Element Method
O. A. Olafadehan, K. O. Amoo, K. F. K. Oyedeko, A. J. Adesina
International Journal of Applied and Computational Mathematics, 2024
Adsorption of cobalt (II) ions from aqueous solution using cow bone and its derivatives: Kinetics, equilibrium and thermodynamic comparative studies
Kehinde Olawale Amoo, Temiloluwa Emmanuel Amoo, Olaosebikan Abidoye Olafadehan, Edith Egbimhanlu Alagbe, Ayo Joshua Adesina, et al.
Results in Engineering, 2023
Effect of catalyst-to-oil ratio and catalyst temperature on determining the yield of gasoline in the riser reactor
Olubunmi G. Abatan, Olaosebikan A. Olafadehan, Vincent E. Efeovbokhan, Olagoke Oladokun, Augustine O. Ayeni
Results in Engineering, 2023
Production and characterization of composite nanoparticles derived from chitosan, CTAB and bentonite clay
Olaosebikan Abidoye Olafadehan, Victor Ehigimetor Bello, Kehinde Olawale Amoo
Chemical Papers, 2022
Modeling and Simulation of Partial Oxidation of Methanol to Formaldehyde on FeO/MoO3 Catalyst in a Catalytic Fixed Bed Reactor
A. O. Olatunde, O. A. Olafadehan, M. Usman
Iranian Journal of Chemistry and Chemical Engineering, 2021
A two-dimensional mathematical model was developed for a porous heterogeneous catalytic fixed bed reactor. The model took into account the effect of heat generated by adsorption of reactants on the catalyst surface and heat transfer from the fluid phase to the surroundings which have significant effect on reactor performance especially at reactor hotspot. The developed model predicted the partial oxidation of methanol to formaldehyde on FeO/MoO3 catalyst, a complex reaction system. Excellent agreement was achieved when the resultant simulated results were compared with experimental data in the literature. The proposed model predicted the location of hotspot at a dimensionless distance of 0.4413 (= 0.0309 m) the same as the experiment value but with a temperature of 619 K compared with experimental value of 622 K. The conventional heterogeneous and pseudo-homogeneous models predicted the hotspot temperature to be about 8 K and 34 K lower than the experimental value respectively.
Comparative investigation of RSM and ANN for multi-response modeling and optimization studies of derived chitosan from Archachatina marginata shell
V.E. Bello, O.A. Olafadehan
Alexandria Engineering Journal, 2021
Optimum Conditions for Extraction of Chitin and Chitosan from Callinectes amnicola Shell Waste
O. A. Olafadehan, T. O. Ajayi, K. O. Amoo
Theoretical Foundations of Chemical Engineering, 2020
The optimization of process variables for the extraction of chitin and chitosan from crab (Callinectes amnicola) shell waste and for the degree of deacetylation (DDA) of extracted chitosan was investigated using response surface methodology (RSM). The respective effects of four and three process parameters on the extraction yields of chitin and chitosan and on the DDA of chitosan were examined. The optimized chitin extraction conditions based on the yield (4.84 g or 19.36%) were obtained to be 3.25 M HCl solution, 18.55 h demineralization time, 2.39 M NaOH solution and 2 h deproteinization time, while the maximum chitosan yield (5.98 g or 13.29%) was obtained at modelled optimized conditions of 50% w/w NaOH solution, 85.05°C deacetylation temperature, and 133.64 min deacetylation time. The modelled optimization conditions for the highest DDA of chitosan produced from crab shell waste were 50% w/w NaOH solution, 84.46°C deacetylation temperature, and 187 min deacetylation time, with the corresponding predicted DDA of 84.20%. Excellent agreement was obtained between experimental DDA of chitosan (84.50%) and the predicted value, with the percentage error being ±0.36. Independent predicted robust quadratic models for predicting the yields of chitin and chitosan extraction and the DDA of chitosan from the crab shell waste were obtained, validated and verified.
Data on artificial neural network and response surface methodology analysis of biodiesel production
A.A. Ayoola, F.K. Hymore, C.A. Omonhinmin, P.O. Babalola, E.O. Bolujo, et al.
Data in Brief, 2020
Biodegradation assessment of bacillus subtilis isolated from locust beans on crude oil
Petroleum and Coal, 2020
Mechanistic kinetic models for steam reforming of concentrated crude ethanol on Ni/Al2O3 catalyst
Journal of Engineering Science and Technology, 2015
Refinery products/waste optimization using a synthesized pinch technique
K. E. Abhulimen, V. O. Adeniyi, O. A. Olafadehan
Theoretical Foundations of Chemical Engineering, 2012
Numerical solution of steady state dispersion flow model for lactose-lactase hydrolysis with different kinetics in fixed bed
Journal of Engineering Science and Technology, 2010
Mechanistic kinetic models for hydrogenolysis of benzothiophene on Co-Mo/-alumina catalyst
O. A. Olafadehan, E. U. Okinedo
Petroleum Science and Technology, 2009
Mathematical modeling and simulation of steady state plug flow for lactose-lactase hydrolysis in fixed bed
O. A. Olafadehan, D. S. Aribike, A. M. Adeyemo
Theoretical Foundations of Chemical Engineering, 2009
Mechanistic kinetic models for n-heptane reforming on platinum/alumina catalyst
O. A. Olafadehan, A. A. Susu, A. Jaiyeola
Petroleum Science and Technology, 2008
Modeling of fixed bed adsorption of phenols on granular activated carbon
D. S. Aribike, O. A. Olafadehan
Theoretical Foundations of Chemical Engineering, 2008
Kinetic models for hydrogenolysis of thiophene on Co-Mo/γ-alumina catalyst
O. A. Olafadehan, S. O. Oghenekaro
Petroleum Science and Technology, 2008
Numerical solution of binary liquid-phase adsorption onto porocel clay using linear, Freundlich and Langmuir isotherms
Olaosebikan A. Olafadehan, Alfred A. Susu
Adsorption Science and Technology, 2005
Computerized solution of the dynamic sorption process for binary system in heterophase medium
Olaosebikan A. Olafadehan, Alfred A. Susu
Petroleum Science and Technology, 2005
Simultaneous reaction-deactivation kinetics in n-Octane and methylcyclopentane reforming reactions on platinum-containing catalysts
Chemical Engineering Communications, 2005
Modeling and simulation of liquid-phase ternary adsorption in activated carbon column
Olaosebikan A. Olafadehan, Alfred A. Susu
Industrial and Engineering Chemistry Research, 2004
Modelling and simulation of ternary liquid-phase adsorption onto activated carbon
Olaosebikan A. Olafadehan, Alfred A. Susu
Adsorption Science and Technology, 2004
Computerized solution of the dynamic sorption process for a binary system in a heterophase medium
Olaosebikan A. Olafadehan, Alfred A. Susu
Industrial and Engineering Chemistry Research, 2004
Computerized solution of the dynamic sorption process for a ternary system in a heterophase medium
O. A. Olafadehan, A. A. Susu
Theoretical Foundations of Chemical Engineering, 2004

RECENT SCHOLAR PUBLICATIONS

Optimisation Studies of Naphthalene Adsorption on Bentonite Clay Impregnated on Chitosan and Surfactant using RSM–CCD, ANN–BP and ANN–PSO Techniques
OA Olafadehan
Journal of Engineering Research 31 (1), 111-133 , 2026
2026
Modelling an End-of-Pipe Technology for Processing Petroleum Oily Sludge
OA Olafadehan, KE Abhulimen, NB Eze, AM Bello, QO Olafadehan
Journal of Chemical and Petroleum Engineering , 2026
2026
Integration of Machine Learning and Feature Analysis for the Optimization of Enhanced Oil Recovery and Carbon Sequestration in Reservoirs
B Mepaiyeda, M Ezeh, O Olafadehan, A Oladipupo, O Adebayo, E Osaro
ChemRxiv 2025 (0826) , 2025
2025
Citations: 3
Dynamic Studies of Binary Adsorption System in Fixed Beds using Orthogonal Collocation on Finite Element Method
OA Olafadehan, KO Amoo, KFK Oyedeko, AJ Adesina
International Journal of Applied and Computational Mathematics 10 (3), 108 , 2024
2024
Citations: 1
Adsorption of cobalt (II) ions from aqueous solution using cow bone and its derivatives: Kinetics, equilibrium and thermodynamic comparative studies
KO Amoo, TE Amoo, OA Olafadehan, EE Alagbe, AJ Adesina, ...
Results in Engineering 20, 101635 , 2023
2023
Citations: 25
Effect of catalyst-to-oil ratio and catalyst temperature on determining the yield of gasoline in the riser reactor
OG Abatan, OA Olafadehan, VE Efeovbokhan, O Oladokun, AO Ayeni
Results in Engineering 19, 101224 , 2023
2023
Citations: 3
Dynamic studies of binary adsorption system in fixed beds
OA Olafadehan, KO Amoo, KFK Oyedeko, AJ Adesina
2023
Comparative analysis of machine learning algorithms in predicting rate of penetration during drilling
OA Olafadehan, ID Ahaotu
Journal of Petroleum Chemistry and Engineering 1 (1), 32-47 , 2023
2023
Citations: 6
Production and characterization of composite nanoparticles derived from chitosan, CTAB and bentonite clay
OA Olafadehan, VE Bello, KO Amoo
Chemical Papers 76 (8), 5063-5086 , 2022
2022
Citations: 10
Evaluation of Heterocyclic Aromatic Compound Dye (Methylene Blue) on Chitosan Adsorbent Sourced from African Snail Shell: Modelling and Optimization Studies
OAO Victor Ehigimetor Bello
Journal of Applied Science & Process Engineering 9 (1), 1054–1090 , 2022
2022
Citations: 4
Comparative Studies of RSM, RSM–GA and ANFILS for Modeling and Optimization of Naphthalene Adsorption on Chitosan–CTAB–Sodium Bentonite Clay Matrix
VEB Olaosebikan Abidoye Olafadehan
Journal of Applied Science & Process Engineering 9 (2), 1242–1280 , 2022
2022
Citations: 2
Mechanistic Kinetic Models for Catalytic Alkylation of Toluene with Methanol for Xylene Production
LSDBAM Olafadehan OA
Petroleum and Petrochemical Engineering Journal 6 (1), 1–16 , 2022
2022
Binary Adsorption of Phenol and 2-Chlorophenol on Chitosan Derived from Pink Shrimp Shell
BVEASG Olafadehan O. A., Amoo K. O, Oyedeko K. F. K., Bello A. M.
Petroleum and Petrochemical Engineering Journal 6 (1), 1–18 , 2022
2022
Citations: 4
Isotherms, kinetic and thermodynamic studies of methylene blue adsorption on chitosan flakes derived from African giant snail shell
OA Olafadehan, VE Bello, KO Amoo, AM Bello
African Journal of Environmental Science and Technology 16 (1), 37-70 , 2022
2022
Citations: 20
Modeling and simulation of partial oxidation of methanol to formaldehyde on feo/moo3 catalyst in a catalytic fixed bed reactor
AO Olatunde, OA Olafadehan, MA Usman
Iranian Journal of Chemistry and Chemical Engineering 40 (6), 1800-1813 , 2021
2021
Citations: 7
Comparative investigation of RSM and ANN for multi-response modeling and optimization studies of derived chitosan from Archachatina marginata shell
VE Bello, OA Olafadehan
Alexandria Engineering Journal 60 (4), 3869-3899 , 2021
2021
Citations: 51
Kinetic studies of corrosion of mild steel in acidic medium using grewa venusta leaves extract as inhibitor.
L Salami, OA Olafadehan, RJ Patinvoh, NA Folami
2021
Characterization and Beneficiation of Clays from Ewekoro for use as Drilling Mud
AO Olatunde, OA Olafadehan, MA Usman, TA Adeosun
World Scientific News 159, 45-58 , 2021
2021
Citations: 3
Extraction and characterization of chitin and chitosan from Callinectes amnicola and Penaeus notialis shell wastes
OA Olafadehan, KO Amoo, TO Ajayi, VE Bello
Journal of Chemical Engineering and Materials Science 12 (1), 1-30 , 2021
2021
Citations: 61
Optimum Conditions for Extraction of Chitin and Chitosan from Callinectes amnicola Shell Waste
OA Olafadehan, TO Ajayi, KO Amoo
Theoretical Foundations of Chemical Engineering 54 (6), 1173-1194 , 2020
2020
Citations: 19

MOST CITED SCHOLAR PUBLICATIONS

Improvement of rheological properties of drilling fluid using locally based materials.
AO Olatunde, MA Usman, OA Olafadehan, TA Adeosun, OE Ufot
Petroleum & Coal 54 (1) , 2012
2012
Citations: 108
Treatment of brewery wastewater effluent using activated carbon prepared from coconut shell
OA Olafadehan, OW Jinadu, L Salami, LT Popoola
International Journal of Applied Science and Technology 2 (1), 165-178 , 2012
2012
Citations: 72
Extraction and characterization of chitin and chitosan from Callinectes amnicola and Penaeus notialis shell wastes
OA Olafadehan, KO Amoo, TO Ajayi, VE Bello
Journal of Chemical Engineering and Materials Science 12 (1), 1-30 , 2021
2021
Citations: 61
Characterisation study of solid wastes: a case of Lagos state
L Salami, AA Susu, RJ Patinvoh, OA Olafadehan
International Journal of Applied Science and Technology 1 (3) , 2011
2011
Citations: 53
Comparative investigation of RSM and ANN for multi-response modeling and optimization studies of derived chitosan from Archachatina marginata shell
VE Bello, OA Olafadehan
Alexandria Engineering Journal 60 (4), 3869-3899 , 2021
2021
Citations: 51
Treatment of industrial wastewater effluent
OA Olafadehan, DS Aribike
Journal of Nigerian Society of Chemical Engineers 19, 50-53 , 2000
2000
Citations: 35
Optimization studies of chitin and chitosan production from Penaeus notialis shell waste
KO Amoo, OA Olafadehan, TO Ajayi
African Journal of Biotechnology 18 (27), 670-688 , 2019
2019
Citations: 31
Adsorption of cobalt (II) ions from aqueous solution using cow bone and its derivatives: Kinetics, equilibrium and thermodynamic comparative studies
KO Amoo, TE Amoo, OA Olafadehan, EE Alagbe, AJ Adesina, ...
Results in Engineering 20, 101635 , 2023
2023
Citations: 25
Equilibrium, kinetic and thermodynamic studies of biosorption of zinc ions from industrial wastewater using derived composite biosorbents from walnut shell
OA Olafadehan
African Journal of Environmental Science and Technology , 2018
2018
Citations: 23
Modeling of fixed bed adsorption of phenols on granular activated carbon
DS Aribike, OA Olafadehan
Theoretical Foundations of Chemical Engineering 42 (3), 257-263 , 2008
2008
Citations: 21
Isotherms, kinetic and thermodynamic studies of methylene blue adsorption on chitosan flakes derived from African giant snail shell
OA Olafadehan, VE Bello, KO Amoo, AM Bello
African Journal of Environmental Science and Technology 16 (1), 37-70 , 2022
2022
Citations: 20
Modeling and simulation of liquid-phase ternary adsorption in activated carbon column
OA Olafadehan, AA Susu
Industrial & engineering chemistry research 43 (25), 8107-8116 , 2004
2004
Citations: 20
Optimum Conditions for Extraction of Chitin and Chitosan from Callinectes amnicola Shell Waste
OA Olafadehan, TO Ajayi, KO Amoo
Theoretical Foundations of Chemical Engineering 54 (6), 1173-1194 , 2020
2020
Citations: 19
Mechanistic kinetic models for steam reforming of concentrated crude ethanol on Ni/Al2O3 catalyst
OA Olafadehan, AA Ayoola, OO Akintunde, VO Adeniyi
Journal of Engineering Science and Technology 10 (5), 633-653 , 2015
2015
Citations: 18
Production and characterization of derived composite biosorbents from animal bone
OA Olafadehan, KE Abhulimen, AI Adeleke, CV Njoku, KO Amoo
African Journal of Pure and Applied Chemistry 13 (2), 12-26 , 2019
2019
Citations: 17
Modelling and simulation of an industrial RFCCU-riser reactor for catalytic cracking of vacuum residue
OA Olafadehan, OP Sunmola, A Jaiyeola, V Efeovbokhan, OG Abatan
Applied Petrochemical Research 8 (4), 219-237 , 2018
2018
Citations: 17
Prediction of concentration profiles of contaminants in groundwater polluted by leachates from a landfill site
L Salami, OA Olafadehan, G Babagana, AA Susu
Int. J. Res. Rev. App. Sci 15 (3), 365-378 , 2013
2013
Citations: 14
Modelling and simulation of methanogenic phase of an anaerobic digester
OA Olafadehan, AT Alabi
Journal of Engineering Research 13 (2), 1-16 , 2009
2009
Citations: 14
Mechanistic Kinetic Models for n-Heptane Reforming on Platinum/Alumina Catalyst
AASAJ O. A. Olafadehan
Petroleum Science and Technology 26, 1459–1480 , 2008
2008
Citations: 13
Production and characterization of composite nanoparticles derived from chitosan, CTAB and bentonite clay
OA Olafadehan, VE Bello, KO Amoo
Chemical Papers 76 (8), 5063-5086 , 2022
2022
Citations: 10

OLAOSEBIKAN ABIDOYE OLAFADEHAN

RESEARCH INTERESTS

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS