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Distance learning demand has increased and turned into an obligatory educational system during the COVID-19 Pandemic. Within this period, students need exceptional support and assistance to be adjusted to the Online framework environment. The current study investigates distance learning on chemical engineering students' educational performance during this pandemic period. This study addresses many issues related to distance learning, such as the household setting suitability with the internet connections, Online lecture activities, Online classroom experience and assessment tools, and student's perception of the Online graduation projects. A comprehensive survey was organized and structured to observe and evaluate these associated issues to distance learning. The study targeted the third, fourth, and fifth-year students. The responses of the students revealed positive and negative assessments of the Online teaching during this Pandemic. Generally, the participated students did not experience significant technical obstacles to acquiring all the Online activities. Most of the contributed students expressed some difficulties concentrating during the Online sessions with limited student-instructor interactions. Graduation Project students encountered problems in performing technical discussions with their academic advisors, coordinators, and teammates compared to the face-to-face approach.
Nayef Ghasem; Mamdouh Ghannam. Challenges, benefits & drawbacks of chemical engineering on-line teaching during Covid-19 pandemic. Education for Chemical Engineers 2021, 36, 107 -114.
AMA StyleNayef Ghasem, Mamdouh Ghannam. Challenges, benefits & drawbacks of chemical engineering on-line teaching during Covid-19 pandemic. Education for Chemical Engineers. 2021; 36 ():107-114.
Chicago/Turabian StyleNayef Ghasem; Mamdouh Ghannam. 2021. "Challenges, benefits & drawbacks of chemical engineering on-line teaching during Covid-19 pandemic." Education for Chemical Engineers 36, no. : 107-114.
Polymeric gas separation membranes have become a competent technology over the past few decades. This review focuses on the broad classifications of membrane materials and the criteria for the selection of membrane materials, describes the various synthesis routes adopted for membrane fabrication, and explains various gas transport mechanisms. A comparison of membrane-based separation technology with other conventional technologies has also been made. The review also discusses the current polymers used for gas separations, current commercially viable membrane-based gas separation processes, and various limitations associated with the development of membrane material and separation processes. Further, various new classes of membranes developed for gas separations, including thermally rearranged polymers, polymers of intrinsic microporosity, room temperature ionic liquids, perfluoro polymers, and mixed matrix membranes, that has high separation performance has also been discussed. Some of the emerging membrane-based gas separations are also reviewed.
Riya Sidhikku Kandath Valappil; Nayef Ghasem; Mohamed Al-Marzouqi. Current and future trends in polymer membrane-based gas separation technology: A comprehensive review. Journal of Industrial and Engineering Chemistry 2021, 98, 103 -129.
AMA StyleRiya Sidhikku Kandath Valappil, Nayef Ghasem, Mohamed Al-Marzouqi. Current and future trends in polymer membrane-based gas separation technology: A comprehensive review. Journal of Industrial and Engineering Chemistry. 2021; 98 ():103-129.
Chicago/Turabian StyleRiya Sidhikku Kandath Valappil; Nayef Ghasem; Mohamed Al-Marzouqi. 2021. "Current and future trends in polymer membrane-based gas separation technology: A comprehensive review." Journal of Industrial and Engineering Chemistry 98, no. : 103-129.
This work presents the modeling and simulation of CO2 capture by a water-based Titanium dioxide (TiO2) solid nanoparticle in a stirred high-pressure vessel at a constant temperature. Photocatalytic material such as TiO2 has excellent properties, namely it is nontoxic, inexpensive, and non-polluting. CFD model equations are developed and solved using COMSOL software package. The effect of the concentration of a solid nanoparticle in a water-based TiO2 solution, the size of TiO2 nanoparticles and the rate of mixing on the CO2 absorption rate is investigated. A 2D mathematical model considers both shuttle and micro-convention mechanisms. Results reveal that the best TiO2 concentration range is between 0.5 and 1 kg/m3 and that a particle size of 10 nm is more efficient than higher particle sizes. A moderate mixing rate maximizes the CO2 removal rate. The theoretical predictions are validated using lab experimental data and those in the available literature. Results confirm that the model calculations match with the experimental results. Accordingly, the model successfully predicts the experimental data and can be used for further studies.
Nayef Ghasem. CFD simulation of CO2 absorption by water-based TiO2 nanoparticles in a high pressure stirred vessel. Scientific Reports 2021, 11, 1 -11.
AMA StyleNayef Ghasem. CFD simulation of CO2 absorption by water-based TiO2 nanoparticles in a high pressure stirred vessel. Scientific Reports. 2021; 11 (1):1-11.
Chicago/Turabian StyleNayef Ghasem. 2021. "CFD simulation of CO2 absorption by water-based TiO2 nanoparticles in a high pressure stirred vessel." Scientific Reports 11, no. 1: 1-11.
Natural gas is one of the main sources of energy. It contains mainly methane and less percentage of impurity compound (CO2, H2S, and N2). The existence of these undesired impurity compounds in natural gas are not needed, because the presence of the acid gases in natural gas can cause corrosion and lowering the heating value in addition to their hazardous nature. The compound severely influenced human health and cause global warming. Accordingly, the capture of the acid gases species (i. e., CO2, H2S) from natural gas is essential. There are many techniques used for this purpose, hollow fiber polymeric membrane is a promising technique for this purpose. In this article, a numerical model is developed to study the effect of membrane contacting process with diverse fiber bore diameters on the percent removal of CO2 from a gas mixture by means of aqueous MEA/water solution as a scrubbing solvent. The developed model is validated utilizing data available in literature. The verified model is used to investigate the effect of flow rate of liquid and gas, and membrane total contact area on the CO2 removal efficiency. Results revealed that, membrane bore diameter and liquid flow rate have strong impact on the percent removal of CO2. The membrane with smaller bore diameter performs better than the other modules with greater diameter.
Nayef Ghasem. Modeling and simulation of the hollow fiber bore size on the CO2 absorption in membrane contactor. Chemical Product and Process Modeling 2020, 1 .
AMA StyleNayef Ghasem. Modeling and simulation of the hollow fiber bore size on the CO2 absorption in membrane contactor. Chemical Product and Process Modeling. 2020; ():1.
Chicago/Turabian StyleNayef Ghasem. 2020. "Modeling and simulation of the hollow fiber bore size on the CO2 absorption in membrane contactor." Chemical Product and Process Modeling , no. : 1.
Global warming is an environmental problem caused mainly by one of the most serious greenhouse gas, CO2 emissions. Subsequently, the capture of CO2 from flue gas and natural gas is essential. Aqueous potassium glycinate (PG) is a promising novelty solvent used in the CO2 capture compared to traditional solvents; simultaneous solvent regeneration is associated with the absorption step. In present work, a 2D mathematical model where radial and axial diffusion are considered is developed for the simultaneous absorption/stripping process. The model describes the CO2/PG absorption/stripping process in a solvent–gas membrane absorption process. Regeneration data of rich potassium glycinate solvent using a varied range of acid gas loading (mol CO2 per mol PG) were used to predict the reversible reaction rate constant. A comparison of simulation results and experimental data validated the accuracy of the model predictions. The stripping reaction rate constant of rich potassium glycinate was determined experimentally and found to be a function of temperature and PG concentration. Model predictions were in good agreement with the experimental data. The results reveal that the percent removal of CO2 is directly proportional to CO2 loading and solvent stripping temperature.
Nayef Ghasem. Modeling and Simulation of the Simultaneous Absorption/Stripping of CO2 with Potassium Glycinate Solution in Membrane Contactor. Membranes 2020, 10, 72 .
AMA StyleNayef Ghasem. Modeling and Simulation of the Simultaneous Absorption/Stripping of CO2 with Potassium Glycinate Solution in Membrane Contactor. Membranes. 2020; 10 (4):72.
Chicago/Turabian StyleNayef Ghasem. 2020. "Modeling and Simulation of the Simultaneous Absorption/Stripping of CO2 with Potassium Glycinate Solution in Membrane Contactor." Membranes 10, no. 4: 72.
In the present work, membrane resistance was estimated and analyzed, and the results showed that total membrane resistance increased sharply when membrane pores were wetted. For further study, a two-dimensional (2D) mathematical model was developed to predict the chemical absorption of CO2 in aqueous methyldiethanolamine (MDEA)-based carbon nanotubes (CNTs) in a hollow fiber membrane (HFM) contactor. The membrane was divided into wet and dry regions, and equations were developed and solved using finite element method in COSMOL. The results revealed that the existence of solid nanoparticles enhanced CO2 removal rate. The variables with more significant influence were liquid flow rate and concentration of nanoparticles. Furthermore, there was a good match between experimental and modeling results, with the modeling estimates almost coinciding with experimental data. Solvent enhanced by solid nanoparticles significantly improved the separation performance of the membrane contactor. There was around 20% increase in CO2 removal when 0.5 wt% CNT was added to 5 wt% aqueous MDEA.
Nayef Ghasem. Chemical Absorption of CO2 Enhanced by Nanoparticles Using a Membrane Contactor: Modeling and Simulation. Membranes 2019, 9, 150 .
AMA StyleNayef Ghasem. Chemical Absorption of CO2 Enhanced by Nanoparticles Using a Membrane Contactor: Modeling and Simulation. Membranes. 2019; 9 (11):150.
Chicago/Turabian StyleNayef Ghasem. 2019. "Chemical Absorption of CO2 Enhanced by Nanoparticles Using a Membrane Contactor: Modeling and Simulation." Membranes 9, no. 11: 150.
Lately nanomaterial received substantial consideration by several researchers. Solid nanoparticles prove to have extensive applications in composite materials and in the enhancement of mass and heat transfer. Adding nanoparticles to a base fluid improves the performance of mass and heat transfer. The effect of the addition of nanoparticles to base fluids, such as pure water and aqueous sodium hydroxide, show significant improvement in the percent removal of carbon dioxide from a gas composed of 15% CO2 balance is CH4 using gas-liquid hollow fiber membrane contactor. Results reveal that the rate of absorption of carbon dioxide increases with an increase in the concentration of nanoparticles up to certain extent beyond which insignificant removal rate is observed. Predicted results revealed that the percent removal of CO2 in the existence of CNT and NaOH is 35% and 40%, respectively.
Nayef Ghasem. Modeling the absorption of CO2 in solvents enhanced by nanoparticle in polymeric membranes. IOP Conference Series: Materials Science and Engineering 2019, 634, 012006 .
AMA StyleNayef Ghasem. Modeling the absorption of CO2 in solvents enhanced by nanoparticle in polymeric membranes. IOP Conference Series: Materials Science and Engineering. 2019; 634 (1):012006.
Chicago/Turabian StyleNayef Ghasem. 2019. "Modeling the absorption of CO2 in solvents enhanced by nanoparticle in polymeric membranes." IOP Conference Series: Materials Science and Engineering 634, no. 1: 012006.
The removal of undesirable compounds such as CO2 and NO2 from incineration and natural gas is essential because of their harmful influence on the atmosphere and on the reduction of natural gas heating value. The use of membrane contactor for the capture of the post-combustion NO2 and CO2 had been widely considered in the past decades. In this study, membrane contactor was used for the simultaneous absorption of CO2 and NO2 from a mixture of gas (5% CO2, 300 ppm NO2, balance N2) with aqueous sodium hydroxide solution. For the first time, a mathematical model was established for the simultaneous removal of the two undesired gas solutes (CO2, NO2) from flue gas using membrane contactor. The model considers the reaction rate, and radial and axial diffusion of both compounds. The model was verified and validated with experimental data and found to be in good agreement. The model was used to examine the effect of the flow rate of liquid, gas, and inlet solute mole fraction on the percent removal and molar flux of both impurity species. The results revealed that the effect of the liquid flow rate improves the percent removal of both compounds. A high inlet gas flow rate decreases the percent removal. It was possible to obtain the complete removal of both undesired compounds. The model was confirmed to be a dependable tool for the optimization of such process, and for similar systems.
Nayef Ghasem. Modeling and Simulation of the Absorption of CO2 and NO2 from a Gas Mixture in a Membrane Contactor. Processes 2019, 7, 441 .
AMA StyleNayef Ghasem. Modeling and Simulation of the Absorption of CO2 and NO2 from a Gas Mixture in a Membrane Contactor. Processes. 2019; 7 (7):441.
Chicago/Turabian StyleNayef Ghasem. 2019. "Modeling and Simulation of the Absorption of CO2 and NO2 from a Gas Mixture in a Membrane Contactor." Processes 7, no. 7: 441.
Zia Ur Rehman; Nayef Ghasem; Mohamed Al-Marzouqi; Nadia Abdullatif. WITHDRAWN: Enhancement of Carbon Dioxide Absorption using Nanofluids in Hollow Fiber Membrane Contactor. Chinese Journal of Chemical Engineering 2019, 1 .
AMA StyleZia Ur Rehman, Nayef Ghasem, Mohamed Al-Marzouqi, Nadia Abdullatif. WITHDRAWN: Enhancement of Carbon Dioxide Absorption using Nanofluids in Hollow Fiber Membrane Contactor. Chinese Journal of Chemical Engineering. 2019; ():1.
Chicago/Turabian StyleZia Ur Rehman; Nayef Ghasem; Mohamed Al-Marzouqi; Nadia Abdullatif. 2019. "WITHDRAWN: Enhancement of Carbon Dioxide Absorption using Nanofluids in Hollow Fiber Membrane Contactor." Chinese Journal of Chemical Engineering , no. : 1.
Polymeric membrane is a promising energy effective and an active alternative for conventional CO2 absorption column. The type of absorption liquid and operating parameters plays an efficient role in the ultimate absorption/stripping performance using gas-liquid membrane contactor. The gas flow rate has a significant effect on CO2 absorption performance, by contrast, it has no effect on stripping performance. Further the CO2 absorption performance in membrane contactor could be enhanced by high liquid flow rates. Because the gas–liquid contact time was a key factor to enhance the stripping flux at low temperature while liquid phase boundary layer thickness and associated mass transfer resistance is important at elevated temperature. So by controlling the liquid phase velocity and the length of module at low temperature better stripping performance can be achieved. The effect of liquid temperature on absorption performance in gas-liquid is not straightforward, since the liquid temperature cooperatively influence several factors.
Nayef Mohamed Ghasem; Nihmiya Abdul Rahim; Mohamed Al-Marzouqi; D.B.A. Mehdi Khosrow-Pour. Carbon Capture From Natural Gas via Polymeric Membranes. Encyclopedia of Information Science and Technology, Fourth Edition 2018, 3043 -3055.
AMA StyleNayef Mohamed Ghasem, Nihmiya Abdul Rahim, Mohamed Al-Marzouqi, D.B.A. Mehdi Khosrow-Pour. Carbon Capture From Natural Gas via Polymeric Membranes. Encyclopedia of Information Science and Technology, Fourth Edition. 2018; ():3043-3055.
Chicago/Turabian StyleNayef Mohamed Ghasem; Nihmiya Abdul Rahim; Mohamed Al-Marzouqi; D.B.A. Mehdi Khosrow-Pour. 2018. "Carbon Capture From Natural Gas via Polymeric Membranes." Encyclopedia of Information Science and Technology, Fourth Edition , no. : 3043-3055.
Nayef Ghasem; Nihmiya Rahim; Mohamed Al-Marzouqi. Thermal Conductivity of Aqueous Solvents Used in CO2 Capture. Journal of Chemical Engineering Research Updates 2016, 3, 25 -30.
AMA StyleNayef Ghasem, Nihmiya Rahim, Mohamed Al-Marzouqi. Thermal Conductivity of Aqueous Solvents Used in CO2 Capture. Journal of Chemical Engineering Research Updates. 2016; 3 (1):25-30.
Chicago/Turabian StyleNayef Ghasem; Nihmiya Rahim; Mohamed Al-Marzouqi. 2016. "Thermal Conductivity of Aqueous Solvents Used in CO2 Capture." Journal of Chemical Engineering Research Updates 3, no. 1: 25-30.
Nayef Ghasem. Enhanced teaching and student learning through a simulator-based course in chemical unit operations design. European Journal of Engineering Education 2015, 41, 455 -467.
AMA StyleNayef Ghasem. Enhanced teaching and student learning through a simulator-based course in chemical unit operations design. European Journal of Engineering Education. 2015; 41 (4):455-467.
Chicago/Turabian StyleNayef Ghasem. 2015. "Enhanced teaching and student learning through a simulator-based course in chemical unit operations design." European Journal of Engineering Education 41, no. 4: 455-467.
Nihmiya Abdul Rahim; Nayef Ghasem; Mohamed Al-Marzouqi. Absorption of CO 2 from natural gas using different amino acid salt solutions and regeneration using hollow fiber membrane contactors. Journal of Natural Gas Science and Engineering 2015, 26, 108 -117.
AMA StyleNihmiya Abdul Rahim, Nayef Ghasem, Mohamed Al-Marzouqi. Absorption of CO 2 from natural gas using different amino acid salt solutions and regeneration using hollow fiber membrane contactors. Journal of Natural Gas Science and Engineering. 2015; 26 ():108-117.
Chicago/Turabian StyleNihmiya Abdul Rahim; Nayef Ghasem; Mohamed Al-Marzouqi. 2015. "Absorption of CO 2 from natural gas using different amino acid salt solutions and regeneration using hollow fiber membrane contactors." Journal of Natural Gas Science and Engineering 26, no. : 108-117.
Nayef Ghasem; Mohamed Al-Marzouqi. Modeling and Experimental Study of Gas-Liquid Membrane Contactor. Encyclopedia of Information Science and Technology, Third Edition 2015, 5442 -5453.
AMA StyleNayef Ghasem, Mohamed Al-Marzouqi. Modeling and Experimental Study of Gas-Liquid Membrane Contactor. Encyclopedia of Information Science and Technology, Third Edition. 2015; ():5442-5453.
Chicago/Turabian StyleNayef Ghasem; Mohamed Al-Marzouqi. 2015. "Modeling and Experimental Study of Gas-Liquid Membrane Contactor." Encyclopedia of Information Science and Technology, Third Edition , no. : 5442-5453.
Nayef Ghasem; Redhouane Henda. Principles of Chemical Engineering Processes. Principles of Chemical Engineering Processes 2014, 1 .
AMA StyleNayef Ghasem, Redhouane Henda. Principles of Chemical Engineering Processes. Principles of Chemical Engineering Processes. 2014; ():1.
Chicago/Turabian StyleNayef Ghasem; Redhouane Henda. 2014. "Principles of Chemical Engineering Processes." Principles of Chemical Engineering Processes , no. : 1.
Nihmiya Abdul Rahim; Nayef Ghasem; Mohamed Al-Marzouqi. Stripping of CO2 from different aqueous solvents using PVDF hollow fiber membrane contacting process. Journal of Natural Gas Science and Engineering 2014, 21, 886 -893.
AMA StyleNihmiya Abdul Rahim, Nayef Ghasem, Mohamed Al-Marzouqi. Stripping of CO2 from different aqueous solvents using PVDF hollow fiber membrane contacting process. Journal of Natural Gas Science and Engineering. 2014; 21 ():886-893.
Chicago/Turabian StyleNihmiya Abdul Rahim; Nayef Ghasem; Mohamed Al-Marzouqi. 2014. "Stripping of CO2 from different aqueous solvents using PVDF hollow fiber membrane contacting process." Journal of Natural Gas Science and Engineering 21, no. : 886-893.
PVDF hollow fiber membranes were fabricated using Thermally Induced Phase Separation (TIPS) method. Gas-liquid interface is formed at the pore openings adjacent to the liquid. In the membrane contactor module, gas diffuses from the gas side across the membrane and reaches the gas liquid interface where gas is absorbed and then reacted in the presence of solvent such as aqueous sodium hydroxide or amine solutions. Nowadays, Monoethanol amine (MEA) and Diethanolamine (DEA) are the most commonly used solvents. In the present work potassium glycinate is used as an alternative liquid absorbent. A comprehensive two-dimensional mathematical model was developed for the transport of carbon dioxide-methane gas mixture through the in lab-made hollow fiber membrane contactor. Potassium glycinate is found to be a promising liquid absorbent. Model predictions were validated with experimental data. Results revealed that mass transfer rate generally increased with the absorbent concentration and that aqueous potassium glycinate solution performs better than MEA and DEA. The model equations were solved using COMSOL software package, model predictions were in good agreement with experimental data.
Nayef Ghasem; Mohamed Al-Marzouqi; Nihmiya Abdul Rahim. Absorption of CO2 Form Natural Gas via Gas-liquid PVDF Hollow Fiber Membrane Contactor and Potassium Glycinate as Solvent. Jurnal Teknologi 2014, 69, 1 .
AMA StyleNayef Ghasem, Mohamed Al-Marzouqi, Nihmiya Abdul Rahim. Absorption of CO2 Form Natural Gas via Gas-liquid PVDF Hollow Fiber Membrane Contactor and Potassium Glycinate as Solvent. Jurnal Teknologi. 2014; 69 (9):1.
Chicago/Turabian StyleNayef Ghasem; Mohamed Al-Marzouqi; Nihmiya Abdul Rahim. 2014. "Absorption of CO2 Form Natural Gas via Gas-liquid PVDF Hollow Fiber Membrane Contactor and Potassium Glycinate as Solvent." Jurnal Teknologi 69, no. 9: 1.
Nayef Ghasem; Mohamed Al-Marzouqi; Zahoor Ismail. Gas–liquid membrane contactor for ethylene/ethane separation by aqueous silver nitrate solution. Separation and Purification Technology 2014, 127, 140 -148.
AMA StyleNayef Ghasem, Mohamed Al-Marzouqi, Zahoor Ismail. Gas–liquid membrane contactor for ethylene/ethane separation by aqueous silver nitrate solution. Separation and Purification Technology. 2014; 127 ():140-148.
Chicago/Turabian StyleNayef Ghasem; Mohamed Al-Marzouqi; Zahoor Ismail. 2014. "Gas–liquid membrane contactor for ethylene/ethane separation by aqueous silver nitrate solution." Separation and Purification Technology 127, no. : 140-148.
This literature survey focuses on the application of computational fluid dynamics (CFD) in various aspects of the fluidized bed reactor. Although fluidized bed reactors are used in various industrial applications, this first-of-its-kind review highlights the use of CFD on polyolefin production. It is shown that CFD has been utilized for the following mechanisms of polymerization: governing of bubble formation, electrostatic charge effect, gas–solid flow behavior, particle distribution, solid–gas circulation pattern, bed expansion consequence, mixing and segregation, agglomeration and shear forces. Heat and mass transfer in the reactor modeling using CFD principles has also been taken under consideration. A number of softwares are available to interpret the data of the CFD simulation but only few softwares possess the analytical capability to interpret the complex flow behavior of fluidization. In this review, the popular softwares with their framework and application have been discussed. The advantages and feasibility of applying CFD to olefin polymerization in fluidized beds were deliberated and the prospect of future CFD applications was also discussed.
M.J.H. Khan; M.A. Hussain; Z. Mansourpour; N. Mostoufi; N.M. Ghasem; E.C. Abdullah. CFD simulation of fluidized bed reactors for polyolefin production – A review. Journal of Industrial and Engineering Chemistry 2014, 20, 3919 -3946.
AMA StyleM.J.H. Khan, M.A. Hussain, Z. Mansourpour, N. Mostoufi, N.M. Ghasem, E.C. Abdullah. CFD simulation of fluidized bed reactors for polyolefin production – A review. Journal of Industrial and Engineering Chemistry. 2014; 20 (6):3919-3946.
Chicago/Turabian StyleM.J.H. Khan; M.A. Hussain; Z. Mansourpour; N. Mostoufi; N.M. Ghasem; E.C. Abdullah. 2014. "CFD simulation of fluidized bed reactors for polyolefin production – A review." Journal of Industrial and Engineering Chemistry 20, no. 6: 3919-3946.
Nayef Ghasem; Mohamed Al-Marzouqi; Nihmiya Abdul Rahim. Modeling of CO2 absorption in a membrane contactor considering solvent evaporation. Separation and Purification Technology 2013, 110, 1 -10.
AMA StyleNayef Ghasem, Mohamed Al-Marzouqi, Nihmiya Abdul Rahim. Modeling of CO2 absorption in a membrane contactor considering solvent evaporation. Separation and Purification Technology. 2013; 110 ():1-10.
Chicago/Turabian StyleNayef Ghasem; Mohamed Al-Marzouqi; Nihmiya Abdul Rahim. 2013. "Modeling of CO2 absorption in a membrane contactor considering solvent evaporation." Separation and Purification Technology 110, no. : 1-10.