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Dive into the research topics where Jimoh K. Adewole is active.

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Featured researches published by Jimoh K. Adewole.


Journal of Polymer Research | 2015

Model-based analysis of polymeric membranes performance in high pressure CO2 removal from natural gas

Jimoh K. Adewole; A.L. Ahmad; Abdullah S. Sultan; Suzylawati Ismail; C.P. Leo

Penetrant-induced plasticization is known to be one of the main challenges of high-pressure membrane separation of CO2 from natural gas. Therefore, a procedure that integrates experimental and mathematical models was developed to analyze the performance of polymeric membranes for removal of CO2 at high feed pressure. A semi-empirical model for estimating plasticization pressure and permeability parameters at plasticization from permeation test data was proposed and tested on more than 90 polymeric membranes. Three model parameters (α1, α2 , and α3) were obtained and used to evaluate membrane performance in terms of plasticization pressure as well as permeability and productivity loss at plasticization pressure. Results from the analysis revealed that this set of parameters can be simply employed to evaluate membrane performance at high pressure.


Journal of Polymer Research | 2012

Erratum to: Transport properties of natural gas through polyethylene nanocomposites at high temperature and pressure

Jimoh K. Adewole; Lars Bogø Jensen; Usamah A. Al-Mubaiyedh; Nicolas von Solms; Ibnelwaleed A. Hussein

High density polyethylene (HDPE)/clay nanocomposites containing nanoclay concentrations of 1, 2.5, and 5 wt% were prepared by a melt blending process. The effects of various types of nanoclays and their concentrations on permeability, solubility, and diffusivity of natural gas in the nanocomposites were investigated. The results were compared with HDPE typically used in the production of liners for the petroleum industry. Four different nanoclays—Cloisite 10A, 15A, 30B and Nanomer 1.44P—were studied in the presence of CH4 and a CO2/CH4 mixture in the temperature range 30–70 °C and pressure range 50–100 bar. The permeability and diffusivity of the gases were considerably reduced by the incorporation of nanoclay into the polymer matrix. Addition of 5 wt% loading of Nanomer 1.44P reduced the permeability by 46% and the diffusion coefficient by 43%. Increasing the pressure from 50 to 100 bar at constant temperature had little influence on the permeability, whereas increasing the temperature from 30 to 70 °C significantly increased the permeability of the gas. Additionally, the effect of crystallinity on permeability, solubility, and diffusivity was investigated. Thus, the permeability of the CO2/CH4 mixture in Nanomer 1.44P nanocomposite was reduced by 47% and diffusion coefficient by 35% at 5 wt% loading, 50 °C, and 100 bar, compared with pure HDPE.


Defect and Diffusion Forum | 2013

Membrane Separation of CO2 from Natural Gas: A State-of-the-Art Review on Material Development

Ahmad Abdul Latif; Jimoh K. Adewole; Suzylawati Ismail; Leo Choe Peng; Abdullah S. Sultan

Natural gas (NG) processing and membrane technology are two very important fields that are of great significance due to increasing demand for energy as well as separation of gas mixtures. While NG is projected to be the number one primary source of energy by 2050, membrane separation is a commercially successful competitor to other separation techniques for energy efficient gas separation processes [1]. Most of the NG produced in the world is coproduced with acid gases such as CO2 which need to be removed to increase the caloric value of NG. A comprehensive review of research efforts in CO2 separation from natural gas is required to capture details of the current scientific and technological progresses on the development of new membrane materials with better separation performance, and the improvement of properties of the existing ones. This paper presents the progress that has been achieved in eliminating the limitations that dominate the large scale application of membrane materials at the present time. Various polymers that have been developed to resist plasticization and the method employed to fabricate these polymers are highlighted. Also the range of plasticization pressures (together with corresponding selectivities and permeabilities at these pressures) that have so far been achieved by these fabrication methods is presented. It is believed that this review will serve as a good reference source especially for research in design and development of membrane materials with better resistance to CO2-induced plasticization.


Korean Journal of Chemical Engineering | 2016

Process modeling and optimization studies of high pressure membrane separation of CO2 from natural gas

Jimoh K. Adewole; A.L. Ahmad

Process design and optimization methodology for high pressure membrane removal of CO2 from natural gas was developed. An approximate model based on plasticization pressure and permeability parameters at plasticization was proposed for quick evaluation of membrane materials for the high pressure operation. The model was derived by applying the partial immobilization assumption to the fundamental model of solution - diffusion mechanism along with a modified upper-bound curve. About ninety membranes obtained from literature were used to illustrate this methodology. The best three were selected for detailed process modeling and optimization. Process optimization was achieved via non-linear programming constraint optimization model. Gas processing cost was used as the objective function, while plasticization pressure and the CO2 concentration in the feed were used as the constraints. Membrane of 6FDA-durene had the lowest annual gas processing cost while 6FDA-DAM : DABA 2 : 1 had the highest optimum product purity.


Journal of Polymer Research | 2017

Polymeric membrane materials selection for high-pressure CO2 removal from natural gas

Jimoh K. Adewole; A.L. Ahmad

A quick qualitative comparison of membrane materials is often necessary in the early phases of membrane separation process design. This comparison and final material selection can be complex when a large number of materials and performance properties are involved. In such cases, a model-based material selection method is a very important tool that is needed by the engineers who are responsible for designing membrane separation systems. Therefore, a new performance criterion was proposed in terms of productivity loss. This criterion was used along with other membrane properties such as plasticization pressure, CO2 permeability, and CO2/CH4 selectivity to carry out a multi-objective optimization of membrane material selection for high-pressure membrane gas separation. Results from the analysis revealed that the productivity loss is very essential in evaluating the property of plasticization-resistant membrane materials. It was also shown that membrane material selection can be efficiently optimized using the multi-objective optimization approach.


Defect and Diffusion Forum | 2014

A Study on Processing and Chemical Composition of Date Pit Powder for Application in Enhanced Oil Recovery

Jimoh K. Adewole; Abdullah S. Sultan

Studies were conducted on method of processing and chemical compositions of date pit for possible applications in enhanced oil recovery. Date seed from the eastern province of Saudi Arabia were washed by sonication and sun dried. The dried seeds were ground, de-oiled and made into solutions using alkaline. Physicochemical properties and chemical compositions of the de-oiled date seed powder were investigated using SEM and FTIR. The properties of the powder solutions were investigated by evaluating their viscosifying properties. Results of elemental analysis showed that the powder contains 57.41 - 65.84% carbon and 34.16 - 41.35% oxygen. The peak values in the range 3369.6 - 3417.3cm-1 obtained from FTIR are indicative of the presence of OH functional groups. The results obtained from viscosity measurement revealed that date seed be utilized as viscosity modifier to alter the mobility ratio in enhanced oil recovery processes. In addition, the multiple hydroxyl functional groups contained in date pit powder can be made available for organic reactions to produce surfactants and polymeric polyols that can be used for wettability and interfacial tension (IFT) alteration as employed in enhanced oil recovery operations. Furthermore, more studies need to be done to investigate and improve other relevant properties of the powder solution so that it can be used in near reservoir conditions. Accordingly, future work will be focused on detailed investigation on the use of the powder to alter mobility ratio, wettability and IFT.


Polymer Bulletin | 2017

Proton conducting blend membranes: physical, morphological and electronic properties

Amir Al-Ahmed; Mazen Khaled Nazal; Abdullah S. Sultan; Jimoh K. Adewole; Syed Javaid Zaidi

Blend membranes of sulfonated poly(ether ether ketone) (SPEEK) and sulfonated polyetherimide (SPEI) have been prepared and investigated as a potential polymer electrolyte membrane (PEM) for direct methanol fuel cell (DMFC). Polymers were dissolved in N-methyl-2-pyrrolidone (NMP) in different mixing ratios and membranes were casted using a semi-automatic casting machine on a pre-cleaned glass plate. The influence of SPEI percentage on ion exchange capacity (IEC), water uptake, methanol permeability and proton exchange capacity have been investigated. Blend membranes showed slightly better IEC, water uptake and methanol crossover properties as compare to pure SPEEK; but proton conductivity was slightly lower than that of pure SPEEK membrane. Membrane morphology was investigated by FESEM, TGA and AFM. Overall, a homogeneous surface was observed for most of the blend membranes, with minor phase separation at higher SPEI contents samples. AFM image of the membrane surface shows nanoscale surface roughness.


International Polymer Processing | 2017

Preparation and Performance Evaluation of SPEEK/Polyaniline Composite Membrane for Direct Methanol Fuel Cell

Abdullah S. Sultan; Jimoh K. Adewole; Amir Al-Ahmed; Mazen Khaled Nazal; S. M. Javaid Zaidi

Abstract Polymer composites comprising sulfonated poly(ether ether ketone) (SPEEK) and 10 to 50 wt% of Poly(trimellitic anhydride chloride-co-4,4′-methylenedianiline) (PTCMA) were prepared by solution casting. The effects of PTCMA concentrations on morphological, thermal and transport properties (water uptake, methanol permeability, ion exchange capacity and proton conductivity) were investigated. A morphological analysis revealed an homogenous dense microstructure for all the composites. Also, transport property tests revealed that the water uptake, methanol permeability and ion exchange capacity were enhanced by the addition of PTCMA whereas proton conductivity deteriorated. As shown by a thermogravimetric analysis, the difference between the thermal properties of the pure SPEEK and the composites was insignificant. Overall, the composites were observed to display a better global performance in terms of transport properties than pure SPEEK.


Journal of Nano Research | 2012

Development of a Mathematical Model for Natural Gas Permeation Through Polymer Nanocomposites at High Pressure and Temperature

Jimoh K. Adewole; Ibnelwaleed A. Hussein; Usamah A. Al-Mubaiyedh

A mathematical model for predicting the permeability of natural gas in polymer nanocomposites was developed and tested using experimental data. The model takes into account the effects of pressure, temperature, crystallinity and nanoparticle loading. Three model parameters (, and) were obtained. The parameter is a measure of the activation energy, described the effect of nanocomposite loading, and can be used to describe the effect of gas concentration on the. Polymer nanocomposites were prepared using high density polyethylene as polymer matrix and Cloisite 15A as nanoclay. The proposed model was used to predict the permeability of the nanocomposites to pure CH4 and mixed CH4/CO2 gases (containing 80 mol% CH4) at pressures up to about 106 bar and temperatures between 30 to 70°C. Predicted results show that the developed model provides an excellent description of natural gas permeation in pure HDPE and its nanocomposites.


International Journal of Greenhouse Gas Control | 2013

Current challenges in membrane separation of CO2 from natural gas: A review

Jimoh K. Adewole; A.L. Ahmad; Suzylawati Ismail; C.P. Leo

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Abdullah S. Sultan

King Fahd University of Petroleum and Minerals

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A.L. Ahmad

Universiti Sains Malaysia

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Amir Al-Ahmed

King Fahd University of Petroleum and Minerals

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C.P. Leo

Universiti Sains Malaysia

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Ibnelwaleed A. Hussein

King Fahd University of Petroleum and Minerals

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Usamah A. Al-Mubaiyedh

King Fahd University of Petroleum and Minerals

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Mazen Khaled Nazal

King Fahd University of Petroleum and Minerals

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Musa O. Najimu

King Fahd University of Petroleum and Minerals

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A. Ul-Hamid

King Fahd University of Petroleum and Minerals

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