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Articles 1 - 30 of 192
Full-Text Articles in Chemical Engineering
Valorization Of Spent Vanadium Pentoxide Catalyst From The Sulfuric Acid Industry As An Economical Adsorbent For Crystal Violet Removal, Ibrahim Hamad Mr., Saddam Alaskary Mr., Abdel El-Mohsen Turky Prof., Nasser Mostafa Prof., Mai Hassan Roushdy Dr.
Valorization Of Spent Vanadium Pentoxide Catalyst From The Sulfuric Acid Industry As An Economical Adsorbent For Crystal Violet Removal, Ibrahim Hamad Mr., Saddam Alaskary Mr., Abdel El-Mohsen Turky Prof., Nasser Mostafa Prof., Mai Hassan Roushdy Dr.
Chemical Engineering
Around 150 000–200 000 tons of spent vanadium pentoxide catalyst (SVC) are generated annually by sulfuric acid plants and are landfilled for $80–150 per ton. It is demonstrated here as an unmodified, zero-cost adsorbent achieving 94.5% ± 0.3% crystal violet (CV) removal at an adsorbent dose of 6.3 g L−1 and an initial concentration of 38.5 mg L−1 , corresponding to a working capacity of 6.1 ± 0.2 mg g−1 with zero material cost and no pretreatment requirement. Physicochemical characterization by XRF, XRD, BET analysis, DLS, SEM-EDX, FTIR spectroscopy, TGA, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and zeta potential analysis …
Activation-Induced Surface Reconstruction Enables Enhanced Pseudocapacitive Charge Storage And Industrial-Current Hydrogen Evolution In Tetra-Metallic Sulfide Nanoflowers, Menna Hasan
Nanotechnology Research Centre
Developing efficient, durable, and earth-abundant electrocatalysts for alkaline water electrolysis is critical for sustainable hydrogen production. Transition-metal sulfides have emerged as promising hydrogen evolution reaction (HER) catalysts; however, their catalytic behavior is often governed by dynamic structural transformations occurring under operating conditions. Herein, we report the synthesis of tetra-metallic Ni-Co-Fe-Mn sulfide nanoflowers directly grown on Ni foam via a one-step hydrothermal approach. The as-prepared catalysts underwent significant electrochemical activation, leading to surface reconstruction and enhanced catalytic activity. The optimized catalyst exhibited a remarkable reduction in overpotential from 300 mV to 121 mV at 100 mA cm⁻², further decreasing to 100 …
Phosphate Removal By Spent Low Temperature Shift Catalyst Through Process Optimization And Mechanistic Study, Fatma A. Hashem Eng., Abeer M. Shoaib Prof., Walaa Omar Dr., Mai H. Roushdy
Phosphate Removal By Spent Low Temperature Shift Catalyst Through Process Optimization And Mechanistic Study, Fatma A. Hashem Eng., Abeer M. Shoaib Prof., Walaa Omar Dr., Mai H. Roushdy
Chemical Engineering
Natural water bodies become eutrophic due to phosphate pollution from industrial and agricultural sectors. This research addresses waste disposal and water pollution at the same time by recycling spent low-temperature shift catalyst (LTSSC) from the fertilizer industry as a sustainable phosphate adsorbent. High surface area (247±5 m2/g), mesoporous structure, and many metal oxide sites (CuO 49%, ZnO 32.2%, and Al2O₃ 13.9%) were shown by characterization using XRF, XRD, BET, SEM–EDX, FTIR, particle size analysis, and zeta potential. Under optimum conditions (contact time 1.64 h, dose 5 g/L, initial concentration 9.58 mg/L, stirring 278 rpm), Response Surface Methodology optimization achieved 92.95±2.8% …
Decarbonizing The C3 Splitter: Performance Optimization And Environmental Impact Of Mvr Integration, Dalia A. Ali Associate Prof.
Decarbonizing The C3 Splitter: Performance Optimization And Environmental Impact Of Mvr Integration, Dalia A. Ali Associate Prof.
Chemical Engineering
Due to the relatively low volatility (α) of propane and propene components, their separation is one of the most energy-intensive processes in the petrochemical industry. This study evaluates the technical, environmental and thermodynamic performance of a mechanical vapor recompression (MVR) heat pump integrated into a C3 splitter, compared to a conventional steam-heated distillation column. A sensitivity study was conducted using Aspen Plus software at different pressures, reflux ratios (RR) and at turndown operations. According to the results, the MVR system uses a compressor to raise the overhead vapor pressure to 38.7 bar to operate the heater without the need for …
Sustainable Waste Valorization: Chitosan From Shrimp Shells For Eco-Friendly Cement Mortars And Global Nexus, Dalia A. Ali Associate Prof., Rahma H. Thabet Dr., Norah Alwadai Associate Prof., Fekri Abdulraqeb Ahmed Ali Prof., Ahmed S. Al-Fatesh Prof., Zeinab A. Etman Prof.
Sustainable Waste Valorization: Chitosan From Shrimp Shells For Eco-Friendly Cement Mortars And Global Nexus, Dalia A. Ali Associate Prof., Rahma H. Thabet Dr., Norah Alwadai Associate Prof., Fekri Abdulraqeb Ahmed Ali Prof., Ahmed S. Al-Fatesh Prof., Zeinab A. Etman Prof.
Chemical Engineering
This study addresses environmental and economic challenges by investigating the valorization of green shrimp shell biowaste into chitosan for application as an eco-friendly, sustainable, and multifunctional cement mortar additive. Chitosan synthesized from shrimp shells was systematically incorporated into high early-strength hydraulic cement mortar specimens ranging from 0 wt% to 1.5 wt% in the presence of silica sand. The influence of chitosan incorporation on the properties of cement mortars was systematically investigated, including mechanical performance (compressive strength and setting time), the underlying mechanism of chemical interactions, and microstructural development. X-ray diffraction (XRD) analysis was performed on the extracted chitosan to confirm …
Machine Learning-Driven Prediction And Mechanistic Insight Into Co2 Adsorption On Biomass-Derived Activated Carbons Using Explainable Ai (Xai), Dalia A. Ali Dr.
Machine Learning-Driven Prediction And Mechanistic Insight Into Co2 Adsorption On Biomass-Derived Activated Carbons Using Explainable Ai (Xai), Dalia A. Ali Dr.
Chemical Engineering
To improve CO2 uptake in Biomass-Derived Activated Carbon (BDAC), this study develops a multiscale hybrid digital twin framework. By integrating microscopic descriptors from Density Functional Theory and Molecular Dynamics (DFT/MD) with experimental data from 63 chemically diverse biomass precursors, a Gaussian Process Regression (GPR) model was developed using the Materń 5/2 Automatic Relevance Determination (ARD) kernel. The framework achieved high internal training accuracy (R2 = 0.968) and Root Mean Square Error (RMSE = 0.2552), while providing a realistic generalization baseline across heterogeneous precursors with a 5-fold Cross Validated (CV) R2 of 0.1567 and CV RMSE of 0.283. Explainable Artificial Intelligence …
Valorization Of Ductile Cast Iron Solid Waste As A High-Performance Adsorbent For Crystal Violet Removal: Characterization, Optimization, And Mechanistic Insights, Ibrahim Ibrahim Mr., Abdel Mohsen Turky Dr., Nasser Mostafa Prof., Mai H. Roushdy
Valorization Of Ductile Cast Iron Solid Waste As A High-Performance Adsorbent For Crystal Violet Removal: Characterization, Optimization, And Mechanistic Insights, Ibrahim Ibrahim Mr., Abdel Mohsen Turky Dr., Nasser Mostafa Prof., Mai H. Roushdy
Chemical Engineering
Industrial textile wastewater containing synthetic dyes cause serious environmental and health risk, whereas ductile cast iron (DCI) foundries generate over 500 000 tons of waste annually. This study utilizes DCI solid waste as an adsorbent to remove the crystal violet (CV) dye from wastewater. Techniques (XRF, XRD, BET, SEM-EDX, FTIR, TGA-DTG, zeta potential) proved that the waste contains 88.0 wt% periclase (MgO) with nanoscale, high surface area, and abundant surface hydroxyl groups. Response surface methodology showed that the most significant parameters were the adsorbent dose and time contact. The optimal conditions give 93.7% removal efficiency at initial concentration: 38.7 mg …
Molybdenum-Doped Zinc Oxide Nanocomposite For Sustainable Photoelectrocatalytic Degradation Of Dyes And Antimicrobial Activity, Samar A. Salim
Molybdenum-Doped Zinc Oxide Nanocomposite For Sustainable Photoelectrocatalytic Degradation Of Dyes And Antimicrobial Activity, Samar A. Salim
Nanotechnology Research Centre
Mo-doped ZnO nanocomposite was synthesized by using auto-combustion method. X-ray diffraction patterns of prepared nanocomposite indicated effective construction of crystalline Mo/ZnO NCs with co-existence of MoO2 and ZnO in required weight ratio. XRD results revealed also that ZnO crystallite size decreased as Mo-doping concentration increased. The direct band gap reduced from 3.309 eV of (MZ-0) to 3.258 eV of (MZ-5), demonstrating a negative correlation with Mo-doping levels. The electrocatalytic activity of Mo/ZnO NCs was assessed by their capability to degrade Indigo Carmine (IC) and Murexide (ME) dyes, and their antibacterial properties were also evaluated. The electrocatalytic (EC) degradation efficiencies for …
Electrochemical Reduction Of Carbon Dioxide By In-Situ Generated Hydrogen At Porous Cu-Fe Foam-Like Catalysts: Efficiency Towards Formic Acid Formation, Aya Saada, Attia Attia
Electrochemical Reduction Of Carbon Dioxide By In-Situ Generated Hydrogen At Porous Cu-Fe Foam-Like Catalysts: Efficiency Towards Formic Acid Formation, Aya Saada, Attia Attia
Biochemical Engineering
No abstract provided.
Advancing Sustainable Co2 Mitigation: Experimental And Computational Analysis Of Thermal Carbon Chitosan Sorbent For Automotive Exhaust Capture, Dalia A. Ali Dr., Amir Ahmed Elgamal Eng., Rania Rushdy Moussa Dr.
Advancing Sustainable Co2 Mitigation: Experimental And Computational Analysis Of Thermal Carbon Chitosan Sorbent For Automotive Exhaust Capture, Dalia A. Ali Dr., Amir Ahmed Elgamal Eng., Rania Rushdy Moussa Dr.
Chemical Engineering
This study investigated the efficiency of thermal carbon chitosan (TCCS) sorbent for CO2 capture from vehicle exhaust emissions within a designed adsorption system. TCCS was synthesized and meticulously characterized using a series of analytical techniques, including Brunauer-Emmett-Teller (BET) surface area analysis, Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Ther- mogravimetric Analysis (TGA), Energy Dispersive X-ray Spectroscopy (EDX), and Differential Scanning Calo- rimetry (DSC). The TCCS adsorbent showed high thermal stability and a heating value (HHV) of 23.5 MJ/kg. Adsorption isotherm study demonstrated that the maximum capacity of CO2 adsorption is 0.084 kg.CO2/kg. TCCS, as well …
Coumarin/Nitrogen-Bearing Heterocyclic Hybridloaded Electrospun Pmma/Pvp Nanofibrous Scaffolds For Accelerating Topical Wound Healing Rates: Synthesis And In Vitro Bio-Evaluation, Samar A. Salim, Mohamed Ali, Tasneem Abed, El Badawy Kamoun
Coumarin/Nitrogen-Bearing Heterocyclic Hybridloaded Electrospun Pmma/Pvp Nanofibrous Scaffolds For Accelerating Topical Wound Healing Rates: Synthesis And In Vitro Bio-Evaluation, Samar A. Salim, Mohamed Ali, Tasneem Abed, El Badawy Kamoun
Nanotechnology Research Centre
Coumarin-nitrogen heterocyclic compounds (e.g. quinoline, acridine, and phthalazine) were synthesized by facile reactions and elucidated by FTIR, 1H, and 13C-NMR analyses, which showed consistency with the expected structures. Coumarin-quinoline (drug A)- and coumarin-acridine (drug B)-loaded electrospun PMMA/PVP nanofibrous scaffolds were fabricated using electrospinning techniques. Results showed a successful PMMA/PVP blend, which formed the matrix that was used as the main scaffold for drug loading/release. The drugs (A and B) were encapsulated within the matrix as verified by IR and SEM results. Bio-evaluation through cytotoxicity and anticancer screening was conducted using the MTT assay against lung fibroblast (Wi-38), colon carcinoma (Caco-2), …
Superhydrophobic Cerium-Based Metal–Organic Frameworks/Polymer Nanofibers For Water Treatment, Samar A. Salim, Hani Nasser Abdelhamid,
Superhydrophobic Cerium-Based Metal–Organic Frameworks/Polymer Nanofibers For Water Treatment, Samar A. Salim, Hani Nasser Abdelhamid,
Nanotechnology Research Centre
No abstract provided.
Methane Partial Oxidation With Ni-Mg-Al Hydrotalcites: Impact Of Magnesium On Catalyst Performance, Dalia A. Ali Dr.
Methane Partial Oxidation With Ni-Mg-Al Hydrotalcites: Impact Of Magnesium On Catalyst Performance, Dalia A. Ali Dr.
Chemical Engineering
The partial oxidation of methane (POM) is a promising route for hydrogen-rich syngas production with lower energy requirements compared to steam reforming. Herein, Ni-incorporated Mg-Al hydrotalcite- derived mixed oxide catalysts (5Ni-HT-x, x = 60, 65, 70, 75 wt.% Mg) were synthesized via co-precipitation and evaluated for CH₄ conversion and H₂ yield. Characterization techniques, including X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), BET, H₂-TPR, TEM, FTIR, TGA, and Raman spectroscopy, were employed to investigate catalyst structure, active site stability, and carbon deposition. As a constituent of hydrotalcite-derived mixed oxides (HT), Ni2+ is strongly bound within the hydrotalcite- derived mixed oxides structure, …
Upcycling Waste To Wealth: Cuo-Sio₂/Reduced Graphene Nanocomposite From Pomegranate Peels For One-Pot Low-Temperature Conversion Of Waste Oils Into Valuable Fatty Acid Monomers, Attia Attia, Shahenda Mahran Dr., Maria Centeno Prof., Basudeb Saha
Upcycling Waste To Wealth: Cuo-Sio₂/Reduced Graphene Nanocomposite From Pomegranate Peels For One-Pot Low-Temperature Conversion Of Waste Oils Into Valuable Fatty Acid Monomers, Attia Attia, Shahenda Mahran Dr., Maria Centeno Prof., Basudeb Saha
Petroleum Engineering and Gas
and hence reduce the price of the fatty acid monomers. This study reports for the first time a novel, environmentally benign, highly active copper oxide-silica oxide/reduced graphene oxide (CuO-SiO2/RGO), heterogeneous nano-catalyst derived from waste pomegranate peels, for the one-pot, low-temperature synthesis of fatty acid monomers from high-acid-value waste vegetable oil (WVO). The synthesised nano-catalyst was extensively characterised using XRD, FT-IR, TEM, SEM, EDX and TGA-DTA. Further, it was utilised to synthesise fatty acidrich oleic phenoxypropyl acrylate (OPA) monomer from high acid value WVO via a single-step reaction.
Boosted Electrochemical Oxidation Of Methanol At Feox/Pd/Au Ternary Nanocatalyst, Ghada El-Nowihy
Boosted Electrochemical Oxidation Of Methanol At Feox/Pd/Au Ternary Nanocatalyst, Ghada El-Nowihy
Chemical Engineering
In this paper, a highly effective catalyst for methanol electrochemical oxidation (MEO) was developed by the sequential deposition of spherical gold nanoparticles (nano-Au) on a glassy carbon (GC) rod’s surface followed by palladium nanoparticles (nano-Pd), then, iron oxide nanoparticles (nano-FeOx) to form FeOx/Pd/Au/GC catalyst. The sequence of catalyst’s layers proved crucial in optimizing its performance towards MEO. Notably, FeOx/Pd/Au/GC electrode produced a remarkable enhancements in the catalytic activity (by 7 times) and stability (approximately 16 fold) when compared to those produced at Pd/GC rod. Additionally, the onset potential for MEO was significantly reduced by approximately 40 mV. Through material and …
Experimentally Driven Numerical Model Of Carbon/Polyaniline-Based Glucose Monitoring Sensors: An Evaluation Using A New Figure Of Merit, Ziad Khalifa, Kyrillos Selim, Amira Ali, Sameh Abdellatif
Experimentally Driven Numerical Model Of Carbon/Polyaniline-Based Glucose Monitoring Sensors: An Evaluation Using A New Figure Of Merit, Ziad Khalifa, Kyrillos Selim, Amira Ali, Sameh Abdellatif
Chemical Engineering
This study presents an experimentally driven numerical model for evaluating carbon/polyaniline (PANI)- based glucose monitoring sensors (GMSs), focusing on innovative configurations using graphene-PANI and carbon nanotube (CNT)-PANI composites. We performed a thorough analysis of the morphological, electrophysical, and electrical properties of these materials, ultimately leading to the extraction of key electrical parameters for integration into a finite element model (FEM). This model simulates the entire sensor, enabling the estimation of critical performance metrics such as sensitivity, limit of detection (LOD), linearity, and power consumption. Our findings demonstrate that the CNT-PANI configuration significantly outperforms the laser-induced graphene (LIG)-PANI electrode, achieving a …
Biowaste Valorization: Integrating Circular Economy Principles With Artificial Intelligence-Driven Optimization For Sustainable Energy Solutions, Dina Aboelela Dr.
Biowaste Valorization: Integrating Circular Economy Principles With Artificial Intelligence-Driven Optimization For Sustainable Energy Solutions, Dina Aboelela Dr.
Biochemical Engineering
Biowaste, encompassing food waste and agricultural residues, poses significant environmental challenges while offering transformative opportunities. Traditionally relegated to landfills or incineration, biowaste is increasingly recognized as a renewable resource for producing biofuels, biochemicals, biomaterials, and animal feed. This review offers a systems-level analysis of biowaste characteristics, conversion processes, and derived bioenergy products such as biofuels, biogas, biodiesel, biohydrogen, bioelectricity, and other valuable chemicals. Diverse conversion methods are explored, including anaerobic digestion, fermentation, microbial fuel cells, pyrolysis, and gasification, alongside conventional practices like landfilling and incineration. Emerging analytical advancements are revolutionizing biowaste valorization. Artificial intelligence (AI) …
Enhancing Oil Recovery With Novel Nano-Particle-Infused Surfactant Biopolymer Composite: A Comprehensive Investigation, Attia Attia, Amira Shafaay Dr., Michael Sami Alfonse Eng., George Azmi Eng., Rania Ramadan
Enhancing Oil Recovery With Novel Nano-Particle-Infused Surfactant Biopolymer Composite: A Comprehensive Investigation, Attia Attia, Amira Shafaay Dr., Michael Sami Alfonse Eng., George Azmi Eng., Rania Ramadan
Petroleum Engineering and Gas
The oil industry worldwide is searching for a new way to increase oil recovery. Chemical flooding has been used worldwide to improve oil recovery. In this research, the study of Enhanced Oil Recovery was carried out by using an Egyptian oil of API 42◦; the experiments were done by using Xanthan biopolymer (XG) gum with sodium dodecylbenzene sulfonate (SDBS) as a composite for the EOR process and studying the impact of different composite concentrations on oil recovery. Design Expert software was used to determine the optimum concentrations of the composite. 500 ppm concentration of graphene cobalt samarium ferrite nanoparticles (NP) …
Exploring The Impact Of Multiwall Carbon Nanotubes On Enhancing Water-Based Mud Performance, Attia Attia, Mohamed Saad Elhossieny Dr., Hesham Abuseda Dr., Ahmed Gouish Prof., Adel Salem Prof.
Exploring The Impact Of Multiwall Carbon Nanotubes On Enhancing Water-Based Mud Performance, Attia Attia, Mohamed Saad Elhossieny Dr., Hesham Abuseda Dr., Ahmed Gouish Prof., Adel Salem Prof.
Petroleum Engineering and Gas
Drilling fluids are critical components in hydrocarbon and geothermal well construction, particularly in extreme downhole environments such as deep reservoirs and high-temperature geothermal systems. Key challenges in designing water-based drilling muds (WBDM) for these applications include effective thermal management, maintenance of rheological stability, and enhancement of thermal conductivity under high-temperature, high-pressure (HTHP) conditions. Recent advances in nanotechnology suggest that nanoscale additives, such as uniformly dispersed carbon nanotubes (CNTs), can significantly improve the thermorheological performance of drilling fluids compared to conventional formulations. However, stabilizing critical fluid properties—including viscosity, filtration efficiency, mud cake integrity, and gel strength—remains a persistent challenge in WBDM …
Experimental Study For Improving Oil Recovery Using Organic Alkaline And Nano-Silica For An Egyptian Oil Field, Attia Attia, Mohamed Sadek Hamedi Al, Mayar Abdelrahman Hassan Eng.
Experimental Study For Improving Oil Recovery Using Organic Alkaline And Nano-Silica For An Egyptian Oil Field, Attia Attia, Mohamed Sadek Hamedi Al, Mayar Abdelrahman Hassan Eng.
Petroleum Engineering and Gas
The oil and gas industry continually seeks innovative methods to enhance hydrocarbon recovery due to the declining productivity of conventional techniques. Current recovery methods, such as water flooding and chemical flooding, often face limitations like high interfacial tension, unfavorable wettability, and reduced mobility of oil, especially under harsh reservoir conditions of high salinity. To address these challenges, this study explores the implementation of nanotechnology in enhanced oil recovery (EOR), focusing on the distinct and unique properties of nanoparticles. Nanoparticles, particularly SiO2, were chosen for their ability to significantly decrease interfacial tension, alter wettability, and improve oil mobility. SiO2 nanoparticles exhibit …
A Comparative Study On Natural Vs. Synthesized Polymers Combined With Silica Nanoparticles To Maximize Secondary Oil Recovery, Attia Attia, Mohamed Sadek Hamedi Al, Waleed Abd-Alsabour Ali Eng., Zeyad Tamer Elshony Eng.
A Comparative Study On Natural Vs. Synthesized Polymers Combined With Silica Nanoparticles To Maximize Secondary Oil Recovery, Attia Attia, Mohamed Sadek Hamedi Al, Waleed Abd-Alsabour Ali Eng., Zeyad Tamer Elshony Eng.
Petroleum Engineering and Gas
Polymer flooding is a well-established technique for enhancing oil recovery from reservoirs. In this study, we investigate the performance of two different polymers, Xanthan Gum, and HPAM for secondary oil recovery in the sand pack. The effects of polymer concentration and high salinity on oil recovery are studied. The polymers are characterized using various measurements and tests, including viscosity, shear rate, and interfacial tension. The sand pack flooding experiments are conducted under various conditions, including varying polymer slugs, and nanosilica (silicon dioxide SiO2) concentration. The results are analyzed to determine the optimal conditions for polymer flooding for enhanced oil recovery. …
Optimization And Dft Study For Boosted Electooxidation Of Formic Acid At Niox Modified Pt Using Urea Derivatives As Blending Fuels, Aya Saada
Biochemical Engineering
This paper addresses the enhancement of formic acid electrooxidation (FAO) at Pt and Pt-NiOx nanoparticles based-catalysts assisted with urea derivatives as blending fuels. Blending formic acid with various ratios of urea derivatives showed noticeable enhancements of FAO as demonstrated by a favorable negative shift of its onset potential (Eonset) and increase of its peak current density concurrently with suppression of the amount of CO poisoning reaction intermediate. Among all the used derivatives, phenyl urea (PU) showed superior enhancing effect towards the direct FAO with a minimal CO formation together with a favorable negative shift of Eonset by 150 mV. The …
Integrating Medical Plastic Waste Pyrolysis And Circular Economy For Environmental Sustainability, Attia Attia, Mohamed Bassyouni Prof., Reem Nasser Eng., Moataz El-Bagoury Eng., Islam Shaker Eng., Yasser Elhenawy Prof., Dina Aboelela Dr.
Integrating Medical Plastic Waste Pyrolysis And Circular Economy For Environmental Sustainability, Attia Attia, Mohamed Bassyouni Prof., Reem Nasser Eng., Moataz El-Bagoury Eng., Islam Shaker Eng., Yasser Elhenawy Prof., Dina Aboelela Dr.
Biochemical Engineering
A critical assessment of pyrolysis technologies and reactor designs was discussed, highlighting various reactor configurations. This study explored the influence of catalysts, temperature, heating rate, and residence time on the pyrolysis process, and addressed their effects on product distribution and composition. Safety considerations and strategies for mitigating the potential environmental impacts of pyrolysis were presented. Comparative analyses of the environmental impacts of traditional waste disposal methods versus pyrolysis-based approaches provided insights into the potential reduction of greenhouse gas emissions and other pollutants. The circular economy approach was explored in the context of medical plastic waste pyrolysis. The potential for closing …
Novel Nanocomposite Of Carbonized Chitosan-Zinc Oxide-Magnetite For Adsorption Of Toxic Elements From Aqueous Solutions, Dalia A. Ali Eng, Ganna Gaber Ismail Eng.
Novel Nanocomposite Of Carbonized Chitosan-Zinc Oxide-Magnetite For Adsorption Of Toxic Elements From Aqueous Solutions, Dalia A. Ali Eng, Ganna Gaber Ismail Eng.
Chemical Engineering
Herein, a novel nanocomposite (carbonized chitosan-zinc oxide-magnetite, CCZF) was developed to effectively remove toxic elements in water remediation. Combining the high adsorption capacities of chitosan with the magnetic properties of magnetite and the chemical stability of zinc oxide, the combination of these unique properties makes it an efficient and versatile material that offers a sustainable solution for water purification. The (CCZF) nanocomposite was synthesized through the coprecipitation method and characterized using various techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET) analysis, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and zeta potential analysis. The results showed …
Optimizing In-Situ Upgrading Of Heavy Crude Oil Via Catalytic Aquathermolysis Using A Novel Graphene Oxide-Copper Zinc Ferrite Nanocomposite As A Catalyst, Attia Attia, Ahmed Ashraf Soliman Eng., Mostafa Aboul-Fetouh Prof., Sayed Gomaa Prof., Tarek Aboul-Fotouh Prof.
Optimizing In-Situ Upgrading Of Heavy Crude Oil Via Catalytic Aquathermolysis Using A Novel Graphene Oxide-Copper Zinc Ferrite Nanocomposite As A Catalyst, Attia Attia, Ahmed Ashraf Soliman Eng., Mostafa Aboul-Fetouh Prof., Sayed Gomaa Prof., Tarek Aboul-Fotouh Prof.
Petroleum Engineering and Gas
Unconventional resources, such as heavy oil, are increasingly being explored and exploited due to the declining availability of conventional petroleum resources. Heavy crude oil poses challenges in production, transportation, and refining, due to its high viscosity, low API gravity, and elevated sulfur and metal content. Improving the quality of heavy oil can be achieved through the application of steam injection, which lowers the oil’s viscosity and enhances its flow. However, steam injection alone falls short of meeting the growing demand for higher-quality petroleum products. Catalytic upgrading is therefore being investigated as a viable solution to improve heavy oil quality. This …
Efficient Phosphate Removal From Water Using Ductile Cast Iron Waste: A Response Surface Methodology Approach, Mai Hassan Roushdy Dr., Nada Amr El-Khashab Eng,, Ahmed Ibrahim Osman Dr., Dalia Amer Ali Dr.
Efficient Phosphate Removal From Water Using Ductile Cast Iron Waste: A Response Surface Methodology Approach, Mai Hassan Roushdy Dr., Nada Amr El-Khashab Eng,, Ahmed Ibrahim Osman Dr., Dalia Amer Ali Dr.
Chemical Engineering
Water scarcity is a critical issue worldwide. This study explores a novel method for addressing this issue by using ductile cast iron (DCI) solid waste as an adsorbent for phosphate ions, supporting the circular economy in water remediation. The solid waste was characterized using XRD, XRF, FTIR, and particle size distribution. Wastewater samples of different phosphate ion concentrations are prepared, and the solid waste is used as an adsorbent to adsorb phosphate ions using different adsorbent doses and process time. The removal percentage is attained through spectrophotometer analysis and experimental results are optimized to get the optimum conditions using Design …
Efficient Phosphate Removal From Water Using Ductile Cast Iron Waste: A Response Surface Methodology Approach, Mai Hassan Dr., Nada Alkhashab Eng., Ahmed Osman Dr., Dalia A. Ali Eng
Efficient Phosphate Removal From Water Using Ductile Cast Iron Waste: A Response Surface Methodology Approach, Mai Hassan Dr., Nada Alkhashab Eng., Ahmed Osman Dr., Dalia A. Ali Eng
Chemical Engineering
Water scarcity is a critical issue worldwide. This study explores a novel method for addressing this issue by using ductile cast iron (DCI) solid waste as an adsorbent for phosphate ions, supporting the circular economy in water remediation. The solid waste was characterized using XRD, XRF, FTIR, and particle size distribution. Wastewater samples of different phosphate ion concentrations are prepared, and the solid waste is used as an adsorbent to adsorb phosphate ions using different adsorbent doses and process time. The removal percentage is attained through spectrophotometer analysis and experimental results are optimized to get the optimum conditions using Design …
Glycerol-Free Biodiesel Via Catalytic Interesterification: A Pathway To A Netzero Biodiesel Industry, Nessren Farrag, Omar Youssef Youssef, Esraa Khaled, Omar Aboelazayem
Glycerol-Free Biodiesel Via Catalytic Interesterification: A Pathway To A Netzero Biodiesel Industry, Nessren Farrag, Omar Youssef Youssef, Esraa Khaled, Omar Aboelazayem
Chemical Engineering
Conventional biodiesel manufacturing uses alcohol as an acyl acceptor, resulting in glycerol as a side product. The increased demand for biodiesel has led to the production of a substantial surplus of glycerol, exceeding the market need. Consequently, glycerol is now being regarded as a byproduct, and in some cases, even as waste. The present study aims to suggest an economically viable and ecologically friendly approach for maintaining the viability of the biodiesel sector. This involves generating an alternative byproduct of higher value, rather than glycerol. Triacetin is produced through the interesterification of triglycerides with methyl acetate, and is a beneficial …
Unveiling The Indoor Performance Of Perovskite/Silicon Tan‑Dem Solar Cells: A Comprehensive Exploration Through Numerically Modelled Energy Band Diagrams, Ziad Khalifa, Sameh O. Abdellatif, Alexander De-Bernardinis, Muath Alkadi, Mostafa Ganoud, Saif Qaid
Unveiling The Indoor Performance Of Perovskite/Silicon Tan‑Dem Solar Cells: A Comprehensive Exploration Through Numerically Modelled Energy Band Diagrams, Ziad Khalifa, Sameh O. Abdellatif, Alexander De-Bernardinis, Muath Alkadi, Mostafa Ganoud, Saif Qaid
Chemical Engineering
This paper delves into the indoor performance analysis of Perovskite/Silicon Tandem Solar Cells (PSSTC) through a detailed exploration utilizing numerically modeled energy band diagrams. The primary objective is to uncover the potential of PSSTC for solar energy conversion in indoor settings. Various tandem cell configurations are scrutinized under diverse artificial lighting spectra, with an innovative Li4Ti5O12/ CsPbCl3/MAPbBr3/CH3NH3PbI3/ Si architecture achieving an exceptional maximum power conversion efficiency of 25.25%. This represents a substantial efficiency enhancement of nearly 7% compared to standalone Silicon cells. The study underscores the significance of design optimization in maximizing performance. The energy band diagram analysis reveals a …
Voltammetric Determination Of Hydrogen Peroxide At Decorated Palladium Nanoparticles/Poly 1,5- Diaminonaphthalene Modified Carbon-Paste Electrode, Ziad Khalifa, Mohamed Fathi Abo Oura, Magdi Abdelazzem, Ablah Hathoot
Voltammetric Determination Of Hydrogen Peroxide At Decorated Palladium Nanoparticles/Poly 1,5- Diaminonaphthalene Modified Carbon-Paste Electrode, Ziad Khalifa, Mohamed Fathi Abo Oura, Magdi Abdelazzem, Ablah Hathoot
Chemical Engineering
In this work, palladium nanoparticles (PdNPs)/p1,5-DAN/ carbon paste electrode (CPE) and p1,5-DAN/CPE sensors have been developed for determination of hydrogen peroxide. Both sensors showed a highly sensitive and selective electrochemical behaviour, which were derived from a large specific area of poly 1,5 DAN and super excellent electroconductibility of PdNPs. PdNPs/p1,5-DAN/CPE exhibited excellent performance over p1,5-DAN/CPE. Thus, it was used for detecting hydrogen peroxide (H2O2) with linear ranges of 0.1 to 250 μM and 0.2 to 300 μM as well as detection limits (S/N= 3) of 1.0 and 5.0 nM for square wave voltammetry (SWV) and cyclic voltammetry (C.V) techniques, respectively. …