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This paper’s primary objective is to examine the vapor delivery mechanism through a tubular membrane distillation (MD) module. Experiments were conducted utilizing a hydrophobic tubular membrane module with a pore size of 0.2 µm. To establish the mass transport mechanism of water vapor, tests were carried out first with pure water as a feed. The permeate flow was then determined using NaCl aqueous feed solutions. Distilled water flux at diverse feed temperatures, feed flow rates, and feed salt concentrations was investigated. The permeate flux improved linearly with rising temperature and flow rate of the feed, however, it declined with feed concentration. Increasing temperature from 40 to 70 °C increased the permeate flux by a factor of 2.2, while increasing the feed flow rate from 60 to 120 L/h increased the permeate flux by a factor ranging from 0.7 to 1.1 depending on feed temperature. Using the Dusty gas model (DGM) the mass transport of water vapor is estimated in the membrane pores. The results showed that the water vapor delivery is controlled by way of the Knudsen molecular diffusion transition mechanism and its version changed into one capable of predicting the permeate fluxes. The mass transfer coefficient calculated and located using the Knudsen molecular transition version agreed properly with the corresponding experimental value. The delivery resistances were affected by working parameters, along with feed temperature, flow rate, and concentration. The mass transfer resistance of the membrane became the predominant controlling step to the MD process.
Adnan AlHathal Alanezi; Mohamed Bassyouni; Shereen M. S. Abdel-Hamid; Hassn Safi Ahmed; Mohamed Helmy Abdel-Aziz; Mohamed Shafick Zoromba; Yasser Elhenawy. Theoretical Investigation of Vapor Transport Mechanism Using Tubular Membrane Distillation Module. Membranes 2021, 11, 560 .
AMA StyleAdnan AlHathal Alanezi, Mohamed Bassyouni, Shereen M. S. Abdel-Hamid, Hassn Safi Ahmed, Mohamed Helmy Abdel-Aziz, Mohamed Shafick Zoromba, Yasser Elhenawy. Theoretical Investigation of Vapor Transport Mechanism Using Tubular Membrane Distillation Module. Membranes. 2021; 11 (8):560.
Chicago/Turabian StyleAdnan AlHathal Alanezi; Mohamed Bassyouni; Shereen M. S. Abdel-Hamid; Hassn Safi Ahmed; Mohamed Helmy Abdel-Aziz; Mohamed Shafick Zoromba; Yasser Elhenawy. 2021. "Theoretical Investigation of Vapor Transport Mechanism Using Tubular Membrane Distillation Module." Membranes 11, no. 8: 560.
Polypyrrole (PPy) is a highly conducting polymer with favorable room temperature (RT) thermoelectric (TE) properties. Recently, nanostructure forms of this polymer have been produced with various morphologies by using different surfactants; however, the effect of these morphologies on the TE figure of merit and TE performance has not been well described. In particular, the TE properties of PPy sheets/films composed of nanoparticles (SNPs) have not yet been investigated. In this work, PPy with various morphologies was synthesized using different surfactants. Nanoparticles, nanotubes, continuous sheets and SNPs were produced and characterized by well-known techniques. The structural and TE properties of the as-synthesized nanomaterials were investigated. The obtained results show that SNPs have improved TE properties compared to nanotubes and nanoparticles. The latter two forms have either higher or lower electrical and thermal conductivities than those of SNPs, which suppress their TE performance. The produced SNPs were able to overcome these limitations, as they have high electrical and low thermal conductivities, which result in a high figure of merit and enhanced TE performance. The best SNPs was found to have a power factor, thermal conductivity and figure of merit of 0.17 μV/m⋅K2, 0.132 W/mK2 and 0.4 × 10−3 at room temperature, respectively. These results might be useful for developing future TE materials and devices.
M. Sh Zoromba; M.H. Abdel-Aziz; M. Bassyouni; Abdullah M. Abusorrah; A. Attar; Neazar Baghdadi; Numan Salah. Polypyrrole sheets composed of nanoparticles as a promising room temperature thermo-electric material. Physica E: Low-dimensional Systems and Nanostructures 2021, 134, 114889 .
AMA StyleM. Sh Zoromba, M.H. Abdel-Aziz, M. Bassyouni, Abdullah M. Abusorrah, A. Attar, Neazar Baghdadi, Numan Salah. Polypyrrole sheets composed of nanoparticles as a promising room temperature thermo-electric material. Physica E: Low-dimensional Systems and Nanostructures. 2021; 134 ():114889.
Chicago/Turabian StyleM. Sh Zoromba; M.H. Abdel-Aziz; M. Bassyouni; Abdullah M. Abusorrah; A. Attar; Neazar Baghdadi; Numan Salah. 2021. "Polypyrrole sheets composed of nanoparticles as a promising room temperature thermo-electric material." Physica E: Low-dimensional Systems and Nanostructures 134, no. : 114889.
In the present study the surface morphology of electrospun fibers at different polystyrene (PS) solution concentration was studied by SEM imaging to determine the best PS solution concentration yielding continuous uniform beadles fibers. Contact angle measurements of the optimum fabricatedPS-18 membrane confirmed the super hydrophobic property of the membrane that exhibited a static water contact angle of 145o. Numerical investigation of the performance of PS-18 membrane at different membrane thicknesses and porosities on direct contact membrane distillation showed that increasing the membrane porosity increases the permeate flux considerably.
Asmaa Elrasheedy; Mohammed Rabie; Ahmed Hassan El-Shazly; Mohamed Bassyouni; Ahmed Abd El-Moneim; Marwa F. El-Kady. Investigation of Different Membrane Porosities on the Permeate Flux of Direct Contact Membrane Distillation. Key Engineering Materials 2021, 889, 85 -90.
AMA StyleAsmaa Elrasheedy, Mohammed Rabie, Ahmed Hassan El-Shazly, Mohamed Bassyouni, Ahmed Abd El-Moneim, Marwa F. El-Kady. Investigation of Different Membrane Porosities on the Permeate Flux of Direct Contact Membrane Distillation. Key Engineering Materials. 2021; 889 ():85-90.
Chicago/Turabian StyleAsmaa Elrasheedy; Mohammed Rabie; Ahmed Hassan El-Shazly; Mohamed Bassyouni; Ahmed Abd El-Moneim; Marwa F. El-Kady. 2021. "Investigation of Different Membrane Porosities on the Permeate Flux of Direct Contact Membrane Distillation." Key Engineering Materials 889, no. : 85-90.
This study aims to evaluate the effect of functionalized multi-walled carbon nanotubes (MWCNTs) on the performance of glass fiber (GF)-reinforced polypropylene (PP) for wind turbine blades. Support for theoretical blade movement of horizontal axis wind turbines (HAWTs), simulation, and analysis were performed with the Ansys computer package to gain insight into the durability of polypropylene-chopped E-glass for application in turbine blades under aerodynamic, gravitational, and centrifugal loads. Typically, polymer nanocomposites are used for small-scale wind turbine systems, such as for residential applications. Mechanical and physical properties of material composites including tensile and melt flow indices were determined. Surface morphology of polypropylene-chopped E-glass fiber and functionalized MWCNTs nanocomposites showed good distribution of dispersed phase. The effect of fiber loading on the mechanical properties of the PP nanocomposites was investigated in order to obtain the optimum composite composition and processing conditions for manufacturing wind turbine blades. The results show that adding MWCNTs to glass fiber-reinforced PP composites has a substantial influence on deflection reduction and adding them to chopped-polypropylene E-glass has a significant effect on reducing the bias estimated by finite element analysis.
Yasser Elhenawy; Yasser Fouad; Haykel Marouani; Mohamed Bassyouni. Simulation of Glass Fiber Reinforced Polypropylene Nanocomposites for Small Wind Turbine Blades. Processes 2021, 9, 622 .
AMA StyleYasser Elhenawy, Yasser Fouad, Haykel Marouani, Mohamed Bassyouni. Simulation of Glass Fiber Reinforced Polypropylene Nanocomposites for Small Wind Turbine Blades. Processes. 2021; 9 (4):622.
Chicago/Turabian StyleYasser Elhenawy; Yasser Fouad; Haykel Marouani; Mohamed Bassyouni. 2021. "Simulation of Glass Fiber Reinforced Polypropylene Nanocomposites for Small Wind Turbine Blades." Processes 9, no. 4: 622.
Synthetic materials using epoxy resin and woven Kevlar fiber nanocomposites were fabricated in the presence of functionalized multiwalled carbon nanotubes (F-MWCNTs). Kevlar-reinforced epoxy nanocomposites were designed to manufacture a small blade of vertical axis wind turbines (VAWT). It is important to estimate the deflection of the versatile composite turbine blades to forestall the blades from breakage. This paper investigates the effect of F-MWCNTs on mechanics and deflection of reinforced epoxy composites. The outcomes show that the mixing of F-MWCNTs with epoxy resin using a sonication process has a significant influence on the mechanical properties. Substantial improvement on the deflections was determined based on finite element analysis (FEA). The vortices from the vertical axis wind turbines (VAWTs) blades have a negative impact on power efficiency, since small blades are shown to be effective in reducing tip vortexes within the aerospace field. To support the theoretical movement of the VAWT blade, modeling calculations and analyzes were performed with the ANSYS code package to achieve insight into the sustainability of epoxy nanocomposites for turbine blade applications below aerodynamic, gravitational, and centrifugal loads. The results showed that the addition of F-MWCNTs to epoxy and Kevlar has a significant effect on the bias estimated by finite element analysis. ANSYS analysis results showed lower deflection on the blade using epoxy with an additional of 0.50 wt.% of MWCNTs-COOH at tip speed ratios of 2.1, 2.6, and 3.1.
Yasser Elhenawy; Yasser Fouad; Haykel Marouani; Mohamed Bassyouni. Performance Analysis of Reinforced Epoxy Functionalized Carbon Nanotubes Composites for Vertical Axis Wind Turbine Blade. Polymers 2021, 13, 422 .
AMA StyleYasser Elhenawy, Yasser Fouad, Haykel Marouani, Mohamed Bassyouni. Performance Analysis of Reinforced Epoxy Functionalized Carbon Nanotubes Composites for Vertical Axis Wind Turbine Blade. Polymers. 2021; 13 (3):422.
Chicago/Turabian StyleYasser Elhenawy; Yasser Fouad; Haykel Marouani; Mohamed Bassyouni. 2021. "Performance Analysis of Reinforced Epoxy Functionalized Carbon Nanotubes Composites for Vertical Axis Wind Turbine Blade." Polymers 13, no. 3: 422.
Conducting polymers have attracted significant attention due to their easy fabrication, morphology modification, and their electrical properties. Amongst them, polypyrrole (PPy) has attractive thermoelectric (TE) properties. Engineering of this polymer in one-dimensional (1D) nanostructured form is found to enhance its TE performance. This was achieved in the present work by using multi-walled carbon nanotubes (MWCNTs) as a core template to direct the self-assembly of PPy and also to further enhance its TE performance. The growth of PPy on the sidewalls of MWCNTs was performed in an acidic medium based oxidative in situ polymerization. Various concentrations of MWCNTs within the range 1.1–14.6 wt.% were used to form the MWCNTs/PPy nanocomposites in 1D core-shell structures. The morphology and microstructure results of the produced nanocomposite samples showed that this MWCNTs were successfully coated by thick and thin layers of PPy. At low concentrations of MWCNTs, thick layers of PPy are formed. While at high concentrations thin layers are coated. The formed 1D nanocomposites have enhanced TE performance, particularly those containing higher contents of MWCNTs. The power factor and figure of merit values for the formed 1D nanocomposites recorded around 0.77 µV/mK2 and 1 × 10−3 at room temperature (RT), respectively. This enhancement was attributed to the perfect coating and good interaction between PPy and MWCNT through π–π stacking between the polymer chains and these nanotubes. These results might be useful for developing future TE materials and devices.
Neazar Baghdadi; M. Zoromba; M. Abdel-Aziz; A. Al-Hossainy; M. Bassyouni; Numan Salah. One-Dimensional Nanocomposites Based on Polypyrrole-Carbon Nanotubes and Their Thermoelectric Performance. Polymers 2021, 13, 278 .
AMA StyleNeazar Baghdadi, M. Zoromba, M. Abdel-Aziz, A. Al-Hossainy, M. Bassyouni, Numan Salah. One-Dimensional Nanocomposites Based on Polypyrrole-Carbon Nanotubes and Their Thermoelectric Performance. Polymers. 2021; 13 (2):278.
Chicago/Turabian StyleNeazar Baghdadi; M. Zoromba; M. Abdel-Aziz; A. Al-Hossainy; M. Bassyouni; Numan Salah. 2021. "One-Dimensional Nanocomposites Based on Polypyrrole-Carbon Nanotubes and Their Thermoelectric Performance." Polymers 13, no. 2: 278.
The effect of compositing multiwalled carbon nanotubes (MWCNTs) with polystyrene (PS) to fabricate nanofibrous membrane by electrospinning technique and comparing the direct contact membrane distillation (DCMD) performance of the blank and composite membranes is evaluated numerically. Surface morphology of both the pristine and the composite membrane was studied by SEM imaging while the average fiber diameter and average pore size were measured using ImageJ software. Static water contact angle and porosities were also determined for both membranes. Results showed significant enhancement in both the hydrophobicity and porosity of the composite membrane by increasing the static water contact angle from 145.4° for the pristine PS membrane to 155° for the PS/MWCNTs composite membrane while the porosity was increased by 28%. Simulation results showed that at any given feed inlet temperature, the PS/MWCNTs membrane have higher permeate flux and better overall system performance.
Asmaa Elrasheedy; Mohammed Rabie; Ahmed El-Shazly; Mohamed Bassyouni; S.M.S. Abdel-Hamid; Marwa El Kady. Numerical Investigation of Fabricated MWCNTs/Polystyrene Nanofibrous Membrane for DCMD. Polymers 2021, 13, 160 .
AMA StyleAsmaa Elrasheedy, Mohammed Rabie, Ahmed El-Shazly, Mohamed Bassyouni, S.M.S. Abdel-Hamid, Marwa El Kady. Numerical Investigation of Fabricated MWCNTs/Polystyrene Nanofibrous Membrane for DCMD. Polymers. 2021; 13 (1):160.
Chicago/Turabian StyleAsmaa Elrasheedy; Mohammed Rabie; Ahmed El-Shazly; Mohamed Bassyouni; S.M.S. Abdel-Hamid; Marwa El Kady. 2021. "Numerical Investigation of Fabricated MWCNTs/Polystyrene Nanofibrous Membrane for DCMD." Polymers 13, no. 1: 160.
Hydrochloric acid doped poly (ortho-aminophenol–co-para-toluidine) as a conjugated semiconducting copolymer is synthesized in acidic medium via the oxidative polymerization method. The spin coating technique is applied to deposit with appropriate adhesion of doped copolymer thin film. The resulting doped poly (ortho-aminophenol–co-para-toluidine) (POAPT) thin film is characterized by the various techniques to explore its structural, morphological, and optical properties. Density-functional theory (DFT) calculations were implemented utilizing Cambridge Serial Total Energy Package (CASTEP) from Accelrys based on a plane-wave pseudopotential. The optical dispersion of poly (ortho-aminophenol–co-para-toluidine) thin film is expressed in the single oscillator terms of Wemple–Didomenico (WD) model. The parameters Eg is 2.02 eV, n and k (at 2.36 eV) are 1.73 and 3.27×10-8, respectively, n∞ is 1.633, λo is 172.65 nm and So is 2.126 nm-2. Based on the resulting data of optical analysis and conductivity the doped poly (ortho-aminophenol–co-para-toluidine) thin film was found to have promising applications in optoelectronic devices area.
M. Sh. Zoromba; M.H. Abdel-Aziz; M. Bassyouni; A. Attar; A.F. Al-Hossainy. Synthesis and characterization of Poly (ortho-aminophenol-co-para-toluidine) and its application as semiconductor thin film. Journal of Molecular Structure 2020, 1225, 129131 .
AMA StyleM. Sh. Zoromba, M.H. Abdel-Aziz, M. Bassyouni, A. Attar, A.F. Al-Hossainy. Synthesis and characterization of Poly (ortho-aminophenol-co-para-toluidine) and its application as semiconductor thin film. Journal of Molecular Structure. 2020; 1225 ():129131.
Chicago/Turabian StyleM. Sh. Zoromba; M.H. Abdel-Aziz; M. Bassyouni; A. Attar; A.F. Al-Hossainy. 2020. "Synthesis and characterization of Poly (ortho-aminophenol-co-para-toluidine) and its application as semiconductor thin film." Journal of Molecular Structure 1225, no. : 129131.
In this study, a photocatalytic reactor with a novel engineering design has been used for the extended degradation of sulfamethazine (SMZ). The reactor employed four consecutive stainless-steel plates immobilized by tungsten-dope TiO2 (W–TiO2) using polysiloxane. The characterization of W–TiO2 by X-ray diffraction (XRD), Raman spectroscopy, and energy-dispersive X-ray (EDX) denoted successful doping of tungsten in the lattice of anatase crystals of TiO2 suggesting a high photocatalytic activity under UV and visible light. A Box-Behnken experimental design was employed for the optimization of the operating parameters such as solution pH, flow rate, and the initial SMZ concentration. The residual SMZ concentration was below the detection limit after 30 min of the photocatalytic reaction under the optimum operating conditions. A highly remarkable degradation of SMZ was observed in five consecutive cycles, which reveals an extended stable photocatalytic activity offered by the reactor design. The transformation products were identified by tandem mass spectrometry, and they were employed to propose the degradation pathway. These results highlight the importance of using the photocatalysts in retained forms and open additional avenues for the practical application of photocatalysis in wastewater treatment.
Kareem Fouad; Mohamed Gar Alalm; Mohamed Bassyouni; Mamdouh Y. Saleh. A novel photocatalytic reactor for the extended reuse of W–TiO2 in the degradation of sulfamethazine. Chemosphere 2020, 257, 127270 .
AMA StyleKareem Fouad, Mohamed Gar Alalm, Mohamed Bassyouni, Mamdouh Y. Saleh. A novel photocatalytic reactor for the extended reuse of W–TiO2 in the degradation of sulfamethazine. Chemosphere. 2020; 257 ():127270.
Chicago/Turabian StyleKareem Fouad; Mohamed Gar Alalm; Mohamed Bassyouni; Mamdouh Y. Saleh. 2020. "A novel photocatalytic reactor for the extended reuse of W–TiO2 in the degradation of sulfamethazine." Chemosphere 257, no. : 127270.
A copolymer of hydrochloric acid doped o-anthranilic acid with o-aminophenol (PAAOAP) was prepared in a highly acidic medium based on the oxidative polymerization in the presence of polyethylene glycol (PEG 200) as a soft template by ferric chloride initiator. The resulting doped hydrochloric acid copolymer (PAAOAP) was characterized by several techniques including FTIR, XRD, SEM, TGA, and UV–Vis–NIR spectrophotometer. A PAAOAP thin film was prepared by spin coating technique with a thickness of 200 ± 3 nm. By applying the specific fabrication conditions summarized in the synthesis of polymer solar cell part and post-production annealing at 323 k, the polymer solar cells were established with a power-conversion efficiency of 8.23%. Interesting thermal stability was studied for these devices. To improve the performance of heterojunction diodes, specific thermal annealing was employed. As a result, the conducting polymer crystallinity and nanoscale morphology were significantly enhanced resulting in improving the collection of charges at the electrode. By this way, the device efficiency was increased by reducing the series resistance of the polymer solar cells.
M. Sh. Zoromba; M.A. Tashkandi; A.A. Alshehri; M.H. Abdel-Aziz; M. Bassyouni; Safwat A. Mahmoud; A. Ben Slimane; A.F. Al-Hossainy. Polymer solar cell based on doped o-anthranilic acid and o-aminophenol copolymer. Optical Materials 2020, 104, 109947 .
AMA StyleM. Sh. Zoromba, M.A. Tashkandi, A.A. Alshehri, M.H. Abdel-Aziz, M. Bassyouni, Safwat A. Mahmoud, A. Ben Slimane, A.F. Al-Hossainy. Polymer solar cell based on doped o-anthranilic acid and o-aminophenol copolymer. Optical Materials. 2020; 104 ():109947.
Chicago/Turabian StyleM. Sh. Zoromba; M.A. Tashkandi; A.A. Alshehri; M.H. Abdel-Aziz; M. Bassyouni; Safwat A. Mahmoud; A. Ben Slimane; A.F. Al-Hossainy. 2020. "Polymer solar cell based on doped o-anthranilic acid and o-aminophenol copolymer." Optical Materials 104, no. : 109947.
In this study, polyamide (PA) thin film composite (TFC) reverse osmosis (RO) membrane filtration was used in edible oil wastewater emulsion treatment. The PA-TFC membrane was characterized using mechanical, thermal, chemical, and physical tests. Surface morphology and cross-sections of TFCs were characterized using SEM. The effects of edible oil concentrations, average droplets size, and contact angle on separation efficiency and flux were studied in detail. Purification performance was enhanced using activated carbon as a pre-treatment unit. The performance of the RO unit was assessed by chemical oxygen demand (COD) removal and permeate flux. Oil concentration in wastewater varied between 3000 mg/L and 6000 mg/L. Oily wastewater showed a higher contact angle (62.9°) than de-ionized water (33°). Experimental results showed that the presence of activated carbon increases the permeation COD removal from 94% to 99%. The RO membrane filtration coupled with an activated carbon unit of oily wastewater is a convenient hybrid technique for removal of high-concentration edible oil wastewater emulsion up to 99%. Using activated carbon as an adsorption pre-treatment unit improved the permeate flux from 34 L/m2hr to 75 L/m2hr.
Sarah Elhady; Mohamed Bassyouni; Ramadan A. Mansour; Medhat H. Elzahar; Shereen Abdel-Hamid; Yasser Elhenawy; Mamdou Y. Saleh. Oily Wastewater Treatment Using Polyamide Thin Film Composite Membrane Technology. Membranes 2020, 10, 84 .
AMA StyleSarah Elhady, Mohamed Bassyouni, Ramadan A. Mansour, Medhat H. Elzahar, Shereen Abdel-Hamid, Yasser Elhenawy, Mamdou Y. Saleh. Oily Wastewater Treatment Using Polyamide Thin Film Composite Membrane Technology. Membranes. 2020; 10 (5):84.
Chicago/Turabian StyleSarah Elhady; Mohamed Bassyouni; Ramadan A. Mansour; Medhat H. Elzahar; Shereen Abdel-Hamid; Yasser Elhenawy; Mamdou Y. Saleh. 2020. "Oily Wastewater Treatment Using Polyamide Thin Film Composite Membrane Technology." Membranes 10, no. 5: 84.
M.H. Abdel-Aziz; E-S.Z. El-Ashtoukhy; M. Sh. Zoromba; M. Bassyouni; G.H. Sedahmed. Removal of nitrates from water by electrocoagulation using a cell with horizontally oriented Al serpentine tube anode. Journal of Industrial and Engineering Chemistry 2020, 82, 105 -112.
AMA StyleM.H. Abdel-Aziz, E-S.Z. El-Ashtoukhy, M. Sh. Zoromba, M. Bassyouni, G.H. Sedahmed. Removal of nitrates from water by electrocoagulation using a cell with horizontally oriented Al serpentine tube anode. Journal of Industrial and Engineering Chemistry. 2020; 82 ():105-112.
Chicago/Turabian StyleM.H. Abdel-Aziz; E-S.Z. El-Ashtoukhy; M. Sh. Zoromba; M. Bassyouni; G.H. Sedahmed. 2020. "Removal of nitrates from water by electrocoagulation using a cell with horizontally oriented Al serpentine tube anode." Journal of Industrial and Engineering Chemistry 82, no. : 105-112.
Cobalt-aluminum layered double hydroxide (Co-Al LDH) is synthesized in the presence of functional amino-organic compounds, including glycine, acetamide and urea. Mixed cobalt-aluminum oxide nanoparticles were prepared from Co-Al LDH by the calcination method. The mixed oxides nanoparticles are characterized by a number of diverse techniques such as FTIR, TGA, XRD, SEM and TEM. The presence of functional amino-organic compounds affects the XRD patterns of Co-Al LDH and the computed lattice parameters. Thin films from Co-Al LDHs with 100 ± 5 nm thickness were fabricated by thermal evaporation method. The average optical energy gaps for Co-Al LDHs films were 2.325 eV with the optical characterization ratio of σ2:σ1 and ε1:ε2 resulted from thin film. Based on the obtained results mixed Co-Al oxides nanoparticles are considered promising alternative materials for producing clean and renewable energy and for enhancing the power conversion efficiency of the prototype of solar cell.
M.H. Abdel-Aziz; M. Sh. Zoromba; M. Bassyouni; M. Zwawi; A.A. Alshehri; A.F. Al-Hossainy. Synthesis and characterization of Co-Al mixed oxide nanoparticles via thermal decomposition route of layered double hydroxide. Journal of Molecular Structure 2020, 1206, 127679 .
AMA StyleM.H. Abdel-Aziz, M. Sh. Zoromba, M. Bassyouni, M. Zwawi, A.A. Alshehri, A.F. Al-Hossainy. Synthesis and characterization of Co-Al mixed oxide nanoparticles via thermal decomposition route of layered double hydroxide. Journal of Molecular Structure. 2020; 1206 ():127679.
Chicago/Turabian StyleM.H. Abdel-Aziz; M. Sh. Zoromba; M. Bassyouni; M. Zwawi; A.A. Alshehri; A.F. Al-Hossainy. 2020. "Synthesis and characterization of Co-Al mixed oxide nanoparticles via thermal decomposition route of layered double hydroxide." Journal of Molecular Structure 1206, no. : 127679.
Carbon nanotubes-based adsorbents have attracted substantial interest as potential adsorbents for heavy metals removal. However many aspects such as the interaction between the modified carbon nanotubes (CNTs) and the heavy metal ions, quantitative effect of the functional groups and regeneration of CNTs-based adsorbents are not fully understood yet. A critical review was performed to compile an extensive profile from several studies of using pristine and modified CNTs for heavy metals removal. CNTs demonstrated a great potential. However surface modification of CNTs is necessary as pristine CNTs may be ineffective in arsenite [As (III)] or arsenate [As (V)] removal. Isotherms and kinetic models for the removal of heavy metals are discussed in details. A particular focus has been placed on better understanding the mechanism of heavy metals removal using CNTs-based adsorbents, affecting factors, maximum adsorption capacity and regeneration. The effect of adsorbent dose, pH, initial concentration, and contact time were addressed by several researchers, which specifies the consistency and performance of CNTs-based materials https://www.sciencedirect.com/topics/materials-science/nanoparticlesas potential adsorbents. To elucidate the mechanism of adsorption, FT-IR, XPS, SEM, TEM and EDX results have been reviewed and discussed. It is found that Langmuir, Freundlich and second order kinetic models are the most frequently used isotherm to describe heavy metals adsorption. CNTs-based adsorbent can be efficiently regenerated.
M. Bassyouni; A. E. Mansi; Alaa ElGabry; Basma A. Ibrahim; Omar A. Kassem; R. Alhebeshy. Utilization of carbon nanotubes in removal of heavy metals from wastewater: a review of the CNTs’ potential and current challenges. Applied Physics A 2019, 126, 38 .
AMA StyleM. Bassyouni, A. E. Mansi, Alaa ElGabry, Basma A. Ibrahim, Omar A. Kassem, R. Alhebeshy. Utilization of carbon nanotubes in removal of heavy metals from wastewater: a review of the CNTs’ potential and current challenges. Applied Physics A. 2019; 126 (1):38.
Chicago/Turabian StyleM. Bassyouni; A. E. Mansi; Alaa ElGabry; Basma A. Ibrahim; Omar A. Kassem; R. Alhebeshy. 2019. "Utilization of carbon nanotubes in removal of heavy metals from wastewater: a review of the CNTs’ potential and current challenges." Applied Physics A 126, no. 1: 38.
In this study, microcellular polyurethane (PU)-natural fiber (NF) biocomposites were fabricated. Polyurethanes based on castor oil and PMDI were synthesized with varying volume ratios of sisal fiber. The effect of natural fiber treatment using water and alkaline solution (1.5% NaOH) and load effect were investigated. Biocomposites were mechanically and physically investigated using tensile, viscoelasticity, and water absorption tests. The interfacial adhesion between PU and sisal fiber was studied using SEM. Short NF loads (3%) showed a significant improvement in the mechanical properties of the PU-sisal composite such as modulus of elasticity, yield and tensile strength up to 133%, 14.35 % and 36.7% respectively. Viscoelastic measurements showed that the composites exhibit an elastic trend as the real compliance (J’) values were higher than those of the imaginary compliance (J’’). Increasing NF loads resulted in a decrease of J’. Applying variable temperatures (120–80 °C) caused an increase in the stiffness at different frequencies.
S.M.S. Abdel-Hamid; O.A. Al-Qabandi; Elminshawy. N.A.S.; Mohamed Bassyouni; M.S. Zoromba; M.H. Abdel-Aziz; H. Mira; Elhenawy Y.. Fabrication and Characterization of Microcellular Polyurethane Sisal Biocomposites. Molecules 2019, 24, 4585 .
AMA StyleS.M.S. Abdel-Hamid, O.A. Al-Qabandi, Elminshawy. N.A.S., Mohamed Bassyouni, M.S. Zoromba, M.H. Abdel-Aziz, H. Mira, Elhenawy Y.. Fabrication and Characterization of Microcellular Polyurethane Sisal Biocomposites. Molecules. 2019; 24 (24):4585.
Chicago/Turabian StyleS.M.S. Abdel-Hamid; O.A. Al-Qabandi; Elminshawy. N.A.S.; Mohamed Bassyouni; M.S. Zoromba; M.H. Abdel-Aziz; H. Mira; Elhenawy Y.. 2019. "Fabrication and Characterization of Microcellular Polyurethane Sisal Biocomposites." Molecules 24, no. 24: 4585.
A novel organic, crystalline and conjugated semiconductor copolymer, the poly (4-nitroaniline-4-toluidine) [DPPNPT] was prepared by oxidative polymerization in acidic medium. Characterization of the poly (4-nitroaniline-4-toluidine) powder was realized by different techniques such as FTIR, UV–Vis, XRD, SEM and optical properties. The spin coating technique was applied to deposit with appropriate adhesion of doped poly (para-nitroaniline-co-para-toluidine) thin film [DPPNPT]TF. The structural properties of resulting doped [DPPNPT]TF was determined by XRD analysis. The optimization of the molecular structure, vibrational spectra and optical properties have been accomplished depends on the density functional theory (DFT) utilizing DMol3 and Cambridge Serial Total Energy Package (CASTEP) program for DPPNPT as the isolated molecule and crystal models. It's very well-referred to the molecule's structure and their contacts. The optical characteristics of UV spectrum of doped [DPPNPT]TF. The optical dispersion of doped [DPPNPT]TF was expressed by single oscillator Wemple–Didomenico (WD) model and followed parameters, (E0), (Ed), (ε∞), (εL), and the ratio (N/m*) were estimated. The morphology of the obtained doped [DPPNPT]TF surface was investigated by SEM. Based on the resulting optical doped [DPPNPT]TF was applied to form optoelectronic devices applications and solar cell.
A.A.I. Abd-Elmageed; A.F. Al-Hossainy; E.M. Fawzy; N. Almutlaq; M.R. Eid; Aymen Bourezgui; S.M.S. Abdel-Hamid; Nadia Elsharkawy; M. Zwawi; M.H. Abdel-Aziz; M. Bassyouni; A.B. Slimane; M. Sh Zoromba. Synthesis, characterization and DFT molecular modeling of doped poly (para-nitroaniline-co-para-toluidine) thin film for optoelectronic devices applications. Optical Materials 2019, 99, 109593 .
AMA StyleA.A.I. Abd-Elmageed, A.F. Al-Hossainy, E.M. Fawzy, N. Almutlaq, M.R. Eid, Aymen Bourezgui, S.M.S. Abdel-Hamid, Nadia Elsharkawy, M. Zwawi, M.H. Abdel-Aziz, M. Bassyouni, A.B. Slimane, M. Sh Zoromba. Synthesis, characterization and DFT molecular modeling of doped poly (para-nitroaniline-co-para-toluidine) thin film for optoelectronic devices applications. Optical Materials. 2019; 99 ():109593.
Chicago/Turabian StyleA.A.I. Abd-Elmageed; A.F. Al-Hossainy; E.M. Fawzy; N. Almutlaq; M.R. Eid; Aymen Bourezgui; S.M.S. Abdel-Hamid; Nadia Elsharkawy; M. Zwawi; M.H. Abdel-Aziz; M. Bassyouni; A.B. Slimane; M. Sh Zoromba. 2019. "Synthesis, characterization and DFT molecular modeling of doped poly (para-nitroaniline-co-para-toluidine) thin film for optoelectronic devices applications." Optical Materials 99, no. : 109593.
Concentrating photovoltaic CPV system such as V-trough is utilized to decrease the area covered by expensive solar cell by replacing the equipment with cheap optics. As a result, the cell temperature rises, leading to a deterioration in both the lifetime and the efficiency. Cooling systems are needed to keep the cell temperature within the recommended limit. This paper describes a study that evaluates the performance of a V-trough PV concentrator integrated with a buried water heat exchanger BWHE cooling system. A special test rig was constructed and tested at Port Said, Egypt. Influence of cooling water was studied within flow rates ranging from 0.01 kg/s to 0.04 kg/s. The cooling system with a BWHE successfully reduced the maximum panel surface temperature from 72.5 °C without cooling to 47.2 °C, 45.5 °C, 41.8 °C and 39.3 °C at water cooling flow rates of 0.01 kg/s, 0.02 kg/s, 0.03 kg/s and 0.04 kg/s, respectively. In addition, the peak generated electrical power (GEP) increased by 18.6%, 20.9%, 23.5% and 28.3% compared with that of the uncooled panel at water cooling flow rates of 0.01 kg/s, 0.02 kg/s, 0.03 kg/s and 0.04 kg/s, respectively. The electrical and thermal efficiencies increased with increasing cooling water flow rates. An economic study was performed to evaluate the unit price of power. The results showed that the relative levelized cost of energy improved by 12.20% due to the proposed cooling system, which also helped reduce the global average CO2 emissions by approximately 49,209 g CO2/summer season.
Nabil A.S. Elminshawy; M. El-Ghandour; Y. Elhenawy; M. Bassyouni; D.G. El-Damhogi; Mohammad F. Addas. Experimental investigation of a V-trough PV concentrator integrated with a buried water heat exchanger cooling system. Solar Energy 2019, 193, 706 -714.
AMA StyleNabil A.S. Elminshawy, M. El-Ghandour, Y. Elhenawy, M. Bassyouni, D.G. El-Damhogi, Mohammad F. Addas. Experimental investigation of a V-trough PV concentrator integrated with a buried water heat exchanger cooling system. Solar Energy. 2019; 193 ():706-714.
Chicago/Turabian StyleNabil A.S. Elminshawy; M. El-Ghandour; Y. Elhenawy; M. Bassyouni; D.G. El-Damhogi; Mohammad F. Addas. 2019. "Experimental investigation of a V-trough PV concentrator integrated with a buried water heat exchanger cooling system." Solar Energy 193, no. : 706-714.
In this study, a novel feed channel was designed and examined for an air gap membrane distillation (AGMD) module to create different geometries, aiming to improve the module's performance. The experimental study has been conducted to investigate the influence of two new feed channels on the enhancement of the membrane sheet thermal boundary. Two feed channel-based designs with different geometries, namely, spacer and corrugated, were examined and benchmarked against the original module. Based on the results, the corrugated feed channel considerably enhanced both the permeate flux and the gain output ratio (GOR) compared with the spacer feed channel under the same operating conditions. The results also showed that the maximum enhancements of the permeate flux and GOR of the corrugated surface and spacer feed channel modules were 50% and 20% and were 40% and 10%, respectively, compared with the original module. The temperature polarization coefficients (TPC) for the corrugated feed channel module were near unity. According to the current study, the maximum performance of the proposed module occurred at the higher studied temperature of 80 °C, which consequently proved that the novel feed channel is more effective than the original one.
Y. Elhenawy; Nabil Elminshawy; M. Bassyouni; Adnan AlHathal Alanezi; E. Drioli. Experimental and theoretical investigation of a new air gap membrane distillation module with a corrugated feed channel. Journal of Membrane Science 2019, 594, 117461 .
AMA StyleY. Elhenawy, Nabil Elminshawy, M. Bassyouni, Adnan AlHathal Alanezi, E. Drioli. Experimental and theoretical investigation of a new air gap membrane distillation module with a corrugated feed channel. Journal of Membrane Science. 2019; 594 ():117461.
Chicago/Turabian StyleY. Elhenawy; Nabil Elminshawy; M. Bassyouni; Adnan AlHathal Alanezi; E. Drioli. 2019. "Experimental and theoretical investigation of a new air gap membrane distillation module with a corrugated feed channel." Journal of Membrane Science 594, no. : 117461.
In this work, nickel–chromium-layered double hydroxide (Ni(II)–Cr(III)LDH) is prepared via co-precipitation method at room temperature with 1:2:3 molar ratio of CrCl3·6H2O: NiCl2·6H2O: NaCl using sodium hydroxide as a precipitating agent. Ni(II)–Cr(III) LDH is synthesized in the absence and in the presence of functionalized amino-organic compounds such as acetamide, glycine, and urea. The ratio between CrCl3·6H2O: NiCl2·6H2O: NaCl: acetamide, glycine or urea was 1:2:3:6. The mixed nickel–chromium oxide nanoparticles are prepared by the calcination of Ni(II)–Cr(III) LDHs at 600 ℃ for 2.5 h. Ni(II)–Cr(III) LDHs and mixed Ni(II)–Cr(III) oxides nanoparticles are characterized by several techniques including FTIR, TGA, XRD, FESEM, HRTEM, and PL. Functionalized amino-organic compounds improve the thermal stability in the order of glycine > urea > acetamide. Also, it affects photoluminescence PL intensity which indicates a marked reduction in electron–hole recombination with the highest photocatalytic activity compared to visible light-driven H2 and O2 evolution. The resulting mixed Ni(II)–Cr(III) oxides particles have an amorphous structure and a relatively uniform size of below 10 nm.
M. Sh. Zoromba; Mohamed Bassyouni; M. H. Abdel-Aziz; Ahmed F. Al-Hossainy; Numan Salah; A. A. Al-Ghamdi; Mohamed R. Eid. Structure and photoluminescence characteristics of mixed nickel–chromium oxides nanostructures. Applied Physics B 2019, 125, 642 .
AMA StyleM. Sh. Zoromba, Mohamed Bassyouni, M. H. Abdel-Aziz, Ahmed F. Al-Hossainy, Numan Salah, A. A. Al-Ghamdi, Mohamed R. Eid. Structure and photoluminescence characteristics of mixed nickel–chromium oxides nanostructures. Applied Physics B. 2019; 125 (9):642.
Chicago/Turabian StyleM. Sh. Zoromba; Mohamed Bassyouni; M. H. Abdel-Aziz; Ahmed F. Al-Hossainy; Numan Salah; A. A. Al-Ghamdi; Mohamed R. Eid. 2019. "Structure and photoluminescence characteristics of mixed nickel–chromium oxides nanostructures." Applied Physics B 125, no. 9: 642.
Ahmed Al-Hossainy; M. Sh. Zoromba; Mohamed Helmy Abdel-Aziz; M. Bassyouni; A. Attar; M. Zwawi; A.A.I. Abd-Elmageed; H.A. Maddah; A. Ben Slimane. Fabrication of heterojunction diode using doped-poly (ortho-aminophenol) for solar cells applications. Physica B: Condensed Matter 2019, 566, 6 -16.
AMA StyleAhmed Al-Hossainy, M. Sh. Zoromba, Mohamed Helmy Abdel-Aziz, M. Bassyouni, A. Attar, M. Zwawi, A.A.I. Abd-Elmageed, H.A. Maddah, A. Ben Slimane. Fabrication of heterojunction diode using doped-poly (ortho-aminophenol) for solar cells applications. Physica B: Condensed Matter. 2019; 566 ():6-16.
Chicago/Turabian StyleAhmed Al-Hossainy; M. Sh. Zoromba; Mohamed Helmy Abdel-Aziz; M. Bassyouni; A. Attar; M. Zwawi; A.A.I. Abd-Elmageed; H.A. Maddah; A. Ben Slimane. 2019. "Fabrication of heterojunction diode using doped-poly (ortho-aminophenol) for solar cells applications." Physica B: Condensed Matter 566, no. : 6-16.