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The Role Of Carboxymethyl Chitosan/Hyaluronic Acid Embedded Gold Nanoparticles As Hyperlipidemic And Leptin Resistance Agent, Samah Diab, Moustafa Fouda, Carmen Sharaby, Mohamed Roushdy, Hanaa Elsayed
The Role Of Carboxymethyl Chitosan/Hyaluronic Acid Embedded Gold Nanoparticles As Hyperlipidemic And Leptin Resistance Agent, Samah Diab, Moustafa Fouda, Carmen Sharaby, Mohamed Roushdy, Hanaa Elsayed
Al-Azhar Bulletin of Science
In this work, hyaluronic acid (HA)/carboxymethyl chitosan (CMCTs) blend, embedded with definite amount of gold nanoparticles (AuNPs), were utilized to mitigate lipid profile and leptin resistance in obese rats. AuNPs were produced through Microwave radiation technique, followed by characterization using the state of art analysis; UV and TEM, Average particle size EDX, XRD and IR. Afterward, 70 male albino rats were divided into two main groups: Group one "n=10 rats" fed healthy diet (negative control). The 2nd group fed on the high fructose diet (HFD) for 4 weeks to induce hyperlipidemia and obesity. To this end, the 2nd group is …
The Antimicrobial Activity Of Six New Synthesized Gemini Surfactants: The Effect Of Spacer And Alkyl Chain Length, Sharbat Bakr, Entsar Badr, Eman Kandeel, Nashwa Bin-Hudayb, Yasmeen Mahmood
The Antimicrobial Activity Of Six New Synthesized Gemini Surfactants: The Effect Of Spacer And Alkyl Chain Length, Sharbat Bakr, Entsar Badr, Eman Kandeel, Nashwa Bin-Hudayb, Yasmeen Mahmood
Al-Azhar Bulletin of Science
New Six cationic Gemini surfactants (GS) with varying alkyl chain lengths and spacer properties were synthesized. The effects of alkyl chain length and spacer characters on antimicrobial activity were investigated. The first group of compounds was known as (2-2'-(ethane-1, 2-diylbis (oxy)) bis (N-(2-alkanamidoethyl)-N, N dimethyl-2-oxoethan-1-aminium)) dichloride, and it had three different alkyl chain lengths (CGSES12, 14 and 16). The general name for the second group was (N1,N1,N3,N3-tetramethyl-N1,N3-bis(2-alkanamidoethyl)propane-1,3-diaminium bromide) with three different alkyl chain lengths, designated as (CGSPS12, 14 and 16).The antimicrobial activity of each surfactant was evaluated by determining the minimum inhibitory concentration (MIC) and the zone of inhibition against …
Amelioration Of Sodium Nitrate-Induced Kidney And Lipid Disorders Thru Combination Of Silver Nanoparticles With Wheat Germ Oil, Invitro/Invivo, Seham Orabi, Carmen Sharaby, Mohamed Roushdy, Hanaa Elsayed, Moustafa Fouda
Amelioration Of Sodium Nitrate-Induced Kidney And Lipid Disorders Thru Combination Of Silver Nanoparticles With Wheat Germ Oil, Invitro/Invivo, Seham Orabi, Carmen Sharaby, Mohamed Roushdy, Hanaa Elsayed, Moustafa Fouda
Al-Azhar Bulletin of Science
Nanomaterial may aid in improving the human quality of life. This study supposed silver nanoparticles (Ag NPs) and" wheat germ oil (WGO)" eliminate the negative consequences of sodium nitrate (NaNO3) on kidney and lipid disorders. Ag NPs were synthesized with two concentrations (10, 50 ppm). Spectroscopic techniques such as UV–Vis, X-ray diffraction (XRD), atomic force microscopy (AFM), and dynamic light scattering (DLS) were extensively used for the characterization of the Ag NPs. They had an average size of 16.8 nm, a poly disparity index (PDI) of 0.3, and a zeta potential (ZP) of -34.8. Bacillus subtilis (ATCC 6633) was utilised …
Bio- Waste As Eco-Friendly Adsorbent For The Removal Of Hazardous Dyes, Fatema Al-Zahra Reda, Heba El Refay, Asrar Goma, Nagwa Badawy, Samia Abufarha, Abeer El-Sayed
Bio- Waste As Eco-Friendly Adsorbent For The Removal Of Hazardous Dyes, Fatema Al-Zahra Reda, Heba El Refay, Asrar Goma, Nagwa Badawy, Samia Abufarha, Abeer El-Sayed
Al-Azhar Bulletin of Science
In recent years color removal from textile effluents on an industrial scale has received a lot of attention not only because of its potential toxicity but also because of its visibility issue. The current study investigated the use of Banana Peel (BP) as a low-cost adsorbent for Reactive Red 43 (RR43) and Malachite Green (MG) removal from aqueous solution. There are numerous color removal techniques, the most common of which is adsorption. The practical performance evaluation in a batch reactor is carried out due to its feasibility of operation. In our batch system, we looked at variables like initial dye …
Heavy Metal And Fluoride Ions Removal From Wastewater Using Moringa Seed Beads, Khalid Khader, Rabie Farag, Moustafa Abo-Elfadl, Mohamed Ali
Heavy Metal And Fluoride Ions Removal From Wastewater Using Moringa Seed Beads, Khalid Khader, Rabie Farag, Moustafa Abo-Elfadl, Mohamed Ali
Al-Azhar Bulletin of Science
Water contamination by heavy metals has harmful and hazardous health consequences for humans. The goal of this study is to see how effective Moringa seeds beads (MOSB) mixed with sodium alginate are at adsorbing ions like copper, nickel, manganese, lead and fluoride from polluted water. Different instrumental approaches were used to characterize the adsorbent (FT-IR and SEM).. Batch adsorption studies and the effects of the adsorption parameters were optimized. The results revealed that the removal rate for each element occurred at the optimum dose (5g/l) with removal efficiency (93, 72, 80, 96, and 93 %) and the maximum sorption capacity …
Synthesis, Characterization, And Evaluation Of Allyl Polymeric Additives As Pour Point Depressant, Ibrahim Radwan, Ahmed Ibrahim, Ashraf Ashmawy, Mohamed Mohammedy, Farag Abdel Hai
Synthesis, Characterization, And Evaluation Of Allyl Polymeric Additives As Pour Point Depressant, Ibrahim Radwan, Ahmed Ibrahim, Ashraf Ashmawy, Mohamed Mohammedy, Farag Abdel Hai
Al-Azhar Bulletin of Science
Pour point depressants (PPDs) are commonly used as chemical wax inhibitors and rheological property improvers in the oil and gas industry in order to improve the flow ability of crude oil. In this study, polymeric additives based on stearyl acrylate (StA)-acrylic acid (AA)-allyl oleate (AO) were prepared via the free radical polymerization method. The obtained polymers were characterized by FTIR, 1H-NMR,GPC, TGA, and DTA. The results indicated the successful formation of the copolymers. The prepared polymers were investigated as PPDs and rheology modifiers for the Egyptian waxy North Qattara crude oils, and the results indicated that the pour point depression …
Application Of Electrodialysis Technique In Removal Of Some Heavy Metal Ions From Discharge Wastewater In Paper Industry, Amr El-Shamy, Mostafa Emara, Rabab Abou Shahba, Aya Shoeeb
Application Of Electrodialysis Technique In Removal Of Some Heavy Metal Ions From Discharge Wastewater In Paper Industry, Amr El-Shamy, Mostafa Emara, Rabab Abou Shahba, Aya Shoeeb
Al-Azhar Bulletin of Science
Electrolysis (ED) is a modern technology for separating pollutants using membranes located in an electric field and has therefore been used in industrial wastewater treatment. The cornerstone of an ED cell is a stack of membranes whose planar plate is composed of cation (CM) and anion (AM) selective membranes. To investigate design requirements such as limiting current density (LCD), current efficiency and membrane resistance by laboratory experimental scale using an ED cell with electrodes, stainless steel 316 [cathode (-) and anode (+)],value of pH equal 6.8 and low voltage supply energy of 24.8 V is installed to remove about 100mg/L …
Synthesis, Structural Characterization, And Catalytic Reduction Study Of Co(Ii) Complex Towards Toxic Organic Compounds; Nitrophenol, And Nitroaniline, Aml Saleh, Abeer Faheim, Omayma Mostafa, Zeinab Abdelwahab, Aida Salman
Synthesis, Structural Characterization, And Catalytic Reduction Study Of Co(Ii) Complex Towards Toxic Organic Compounds; Nitrophenol, And Nitroaniline, Aml Saleh, Abeer Faheim, Omayma Mostafa, Zeinab Abdelwahab, Aida Salman
Al-Azhar Bulletin of Science
This work demonstrates the synthesis of Co(II) complex of a new imine ligand incorporated sulfonamide, and coumarin moiety. The ligand and its complex were characterized by elemental analysis, IR, 1HNMR, mass, UV-Vis spectroscopy, molar conductance, magnetic susceptibility and thermal gravimetric analysis (TGA-DTG). According to the spectral analysis, the ligand, HL acts as a multidente donor coordinating through NONO donor sites. The Co(II) complex has tetrahedral geometry, and non-electrolytic in nature. The thermodynamic parameters as activation energy, enthalpy of activation, entropy of activation, and free energy of activation were determined via the thermal analysis. Furthermore, the ability of Co(II) complex as …
Modeling Of The Dynamics Adsorption Of Some Hazardous Elements From Aqueous Solution Onto Bentonite-Calcium-Alginate Beads, Riham Abou-Lilah, Nagwa Badway, Azza Gamal, Hoda Rizk, Amal Ali, Mostafa Elshorbagy
Modeling Of The Dynamics Adsorption Of Some Hazardous Elements From Aqueous Solution Onto Bentonite-Calcium-Alginate Beads, Riham Abou-Lilah, Nagwa Badway, Azza Gamal, Hoda Rizk, Amal Ali, Mostafa Elshorbagy
Al-Azhar Bulletin of Science
Encapsulation of bentonite-Ca-alginate was employed for discharge of Cs+, Sr2+, UO22+ and Co2+ from aquatic solution. Preferable pH for elimination of these ions was 5.5. For radiation stability, bentonite-Ca-alginate was investigated; a 60Co source was used to expose it to gamma radiation. Data obtained from (FT-IR) assessed radiation-induced effect on a stability of bentonite-Ca-alginate. Irradiated samples untill 100 kGy do not impair an absorption of an ions examined. In a column application, bentonite-Ca-alginate composite beads were examined for the discharge of these ions from multicomponent solution using fixed-bed column. Effect on column output of various parameters, like bed height, flow …
Preparation, Characterization And Antimicrobial Activity Of Chitosan-Fatty Acid Derivatives As A Drug Delivery System: Intercelation And In Vitro Release Of Ciprofloxacin, Shimaa Hamza, Noha Alian, Maha Elsawy, Nihal Shaker
Preparation, Characterization And Antimicrobial Activity Of Chitosan-Fatty Acid Derivatives As A Drug Delivery System: Intercelation And In Vitro Release Of Ciprofloxacin, Shimaa Hamza, Noha Alian, Maha Elsawy, Nihal Shaker
Al-Azhar Bulletin of Science
One of the most exciting areas of research in pharmaceutical sciences is the development of new delivery systems for controlled drug release. The main objective of this research focused on chitosan-fatty acid derivatized matrix for drug delivery. Saturated fatty acids (lauric acid and stearic acid) as well as unsaturated fatty acids (oleic acid and linoleic acid) are involved in this study which enhance the chemical properties of chitosan in drug delivery and enhance the permeability of ciprofloxacin drug compounds. The structure of the synthesized derivatives was characterized by Fourier transform infrared spectroscopy and X-ray diffraction. Intercalation and in vitro release …
Peculiarities Of U(Vi) Adsorption From Acidic Solution Using Chitin-Derived Chitosan As A Low-Priced Bio-Adsorbent, Khaled Abd El-Rahem, Mahmoud Taher, Mohamed Cheira
Peculiarities Of U(Vi) Adsorption From Acidic Solution Using Chitin-Derived Chitosan As A Low-Priced Bio-Adsorbent, Khaled Abd El-Rahem, Mahmoud Taher, Mohamed Cheira
Al-Azhar Bulletin of Science
Chitosan (CS) as an inexpensive bio-adsorbent was set by chitin deacetylation using sodium hydroxide. The prepared bio-adsorbent was distinguished via Scanning electron microscopy (SEM), X-ray diffraction (XRD), Energy dispersive spectroscopy (EDX), Brunner-Emmett-Teller surface area (BET) analyzer, and Fourier transform infrared spectroscopy (FTIR). Chitosan implemented for U(VI) adsorption, and the studied parameters that are pH, time of contact, initial concentration, and temperature, were determined by batch technique. The maximum uptake of CS adsorbent is 88.0 mg/g at 200 mg/L initial U(VI) concentration, pH 3.5, and 25 °C. The kinetic information agreed with the pseudo-second-order model, which considered the attendance of chemisorption. …
The Electrochemical Sensing Of Nalbuphine Hydrochloride Drug Substance In Vitro By The Cyclic Voltammetric And Conductometric Titration Techniques, Badr Elsayed, Essam Gomaa, Mgdy Awad, Ammar Abdallah
The Electrochemical Sensing Of Nalbuphine Hydrochloride Drug Substance In Vitro By The Cyclic Voltammetric And Conductometric Titration Techniques, Badr Elsayed, Essam Gomaa, Mgdy Awad, Ammar Abdallah
Al-Azhar Bulletin of Science
The electrochemical sensing of Nalbuphine hydrochloride drug substance in vitro by the cyclic voltammetry technique using the activated glassy carbon electrode. The solvation of CdCl2 alone or in the presence of Nalbuphine HCl was studied by CV technique in 0.05 M KCl supporting electrolyte and different concentrations from CdCl2 at 305.15K. The cyclic voltammograms were preceded at different scan rates 0.1, 0.05, 0.02 and 0.01 V Sec-1. Also, different Nalbuphine HCl concentrations were utilized for studying their effect as electrochemical sensors on the solvation and kinetics parameters of CdCl2. The redox mechanism of the system was determined from the resulted …
Adsorption Of Copper Ions On Chitosan-Based Films For Detection Of H2s Gas Pollutant, Ahmed Gamal, Ahmed Ibrahim, Adham El-Zomrawy
Adsorption Of Copper Ions On Chitosan-Based Films For Detection Of H2s Gas Pollutant, Ahmed Gamal, Ahmed Ibrahim, Adham El-Zomrawy
Al-Azhar Bulletin of Science
Sulfide in its form of free hydrogen sulfide is recognized to cause anxiety at its lower level of concentration, but at a higher level, it causes permanent brain damage, fainting, or even death through asphyxiation. In this study, chitosan films were fabricated, and the copper ions were loaded onto them by way of adsorption to be used in the detection of hydrogen sulfide (H2S) gas electrochemically. The results presented an amazing variation in the electrical resistivity and conductivity of the chitosan and copper-loaded chitosan films against time in response to H2S gas adsorption. Also, the results demonstrate a significant increase …
Correlation Effects On Intramolecular C-H...Oh And O-H...O Hydrogen Bond Interactions In Azelaic Acid: An Ab Initio Study, Sabina Kalata, Alina Huang, Ruben Parra
Correlation Effects On Intramolecular C-H...Oh And O-H...O Hydrogen Bond Interactions In Azelaic Acid: An Ab Initio Study, Sabina Kalata, Alina Huang, Ruben Parra
DePaul Discoveries
Electron correlation effects on both conventional, O-H…O, and nonconventional, C-H…O, intramolecular hydrogen bonds present in a selected azelaic acid folded conformation were evaluated ab initio using HF and MP2 methodologies. The relative strength of the hydrogen bonds was examined through different indicators derived from geometry, vibrational frequencies, and electron density along the hydrogen bond path. The HF method results in weaker O-H…O and C-H…O hydrogen bonds when compared with the corresponding results using the MP2 method. Additionally, the stability of the folded azelaic conformation is found to depend on the level of theory used. Accordingly, the zero-point corrected energies of …
Effect Of Adding Lime Waste And Sodium Chloride On Bentonite Swelling Behavior And Infiltration Rate, Marwa Hussien
Effect Of Adding Lime Waste And Sodium Chloride On Bentonite Swelling Behavior And Infiltration Rate, Marwa Hussien
Al-Azhar Bulletin of Science
Bentonite is artificial clayey soil that not only has the tendency to swell or increase in volume but also to shrink or decrease in volume due to variations in water content. In geotechnical engineering field, this soil causes severe damage to structures that are founded. The aim of this study is to investigate the effect of adding lime waste which is obtained from Abou Korkas sugarcane factory and sodium chloride on swelling properties of bentonite as a chemical stabilization process. In this regard, important techniques (SEM and EDX) were carried out to identify the mineralogy and microstructure variations before and …
Osmosis - Spring 2019
Osmosis Magazine
Osmosis is a student read, led, and written publication from the University of Richmond, focusing on all aspects of healthcare and science.
Osmosis - Fall 2019
Osmosis Magazine
Osmosis is a student read, led, and written publication from the University of Richmond, focusing on all aspects of healthcare and science.
A Facile Synthesis Of Some Novel 1,3,4-Thiadiazoles And Pyridines Linked To Benzofuran As Antimicrobial Agents., N. Mahmoud
Al-Azhar Bulletin of Science
In the present study, a new series of benzofuran-integrated 1,3,4-thiadiazoles were prepared starting from pyrazol-4-carboxaldehyde derivatives 3a,b. Thus, reaction of compound 3a,b with benzyl hydrazine carbodithioate afforded hydrazine carbodithioate derivatives 4a,b. Treatment of compound 4a with hydrazonoyl halides 5e,f afforded 1,3,4-thiadiazoles 6a, b while the reaction of 4b with hydrazonoyl halides 5a-d yielded 1,3,4-thiadiazoles 7a,b. on the other hand, new pyridine derivatives can be synthesized via the reaction from the reaction of chalcone 8 with different C-nucleophile such as ethyl acetoacetate, benzoyl acetonitrile or acetyl acetone. All the new derivatives were characterized by spectral data. Some of the newly prepared …
Fenugreek Seeds Extract Performance As A Green Corrosion Inhibitor For Alpha-Brass In Nitric Acid Solution, Ghalia Gaber, Seham Shahen
Fenugreek Seeds Extract Performance As A Green Corrosion Inhibitor For Alpha-Brass In Nitric Acid Solution, Ghalia Gaber, Seham Shahen
Al-Azhar Bulletin of Science
In this study, the performance of an aqueous extract of fenugreek seeds (AEFS) as an inhibitor of alpha-brass corrosion immersed in 1 M HNO3 was investigated by mass loss technique, the results showed that the inhibition efficiency increases to reach 96.48 percent at 10 percent of (AEFS) with increasing concentration. The impact of temperature on alpha-brass corrosion conduct immersed in 1 M HNO3 without and with the inhibitor was tested in the temperature range of 303 and 343 K at 10 percent of (AEFS). Various adsorption parameters (Ea, G°ads, Kads) show a strong interaction between the inhibitor and the surface …
Study Interionic Attraction Of Anionic Dyes By Electrolytic Conductivity Measurement, Alshimaa Gomaa
Study Interionic Attraction Of Anionic Dyes By Electrolytic Conductivity Measurement, Alshimaa Gomaa
Al-Azhar Bulletin of Science
Measurements of conductivity in aqueous solution are recommended for studying the behavior of some dyes. The conductivity of two azo dyes C.I. Acid Red 151 (AR 151) and C.I. Mordant green 17 (MG17) have been studied. The ionization degree, α and Van,t Hoff’s factor ,i, were calculated; their values decrease with increasing dye concentration and increase with increasing temperature. The mobility, µ, the activation energy, E, were also calculated. The findings indicate that interionic attractions and connections are present. Dyes ions tend to self-associate. Since these textile dyes were applied from aqueous systems, it is important to understand the association …
Coloring And Characterization Of Cotton Textiles Plated And With Self-Cleaning Nanoparticles., Alshimaa Gomaa
Coloring And Characterization Of Cotton Textiles Plated And With Self-Cleaning Nanoparticles., Alshimaa Gomaa
Al-Azhar Bulletin of Science
Cotton textiles tinting of by direct and reactive dyes using consumption method has been done by nanoparticles technicality. Gadolinium doped Zinc oxide nanoparticles ( Gd3+/ZnO) were successfully coated onto the surface of the cotton fabrics. ZnO and 2%wt ( Gd3+/ZnO) nanoparticles are synthesized by precipitation method. The morphology, microstructure and functional groups were characterized for both of them through X-ray diffraction (XRD), scanning electron microscopy (SEM) , energy-dispersive analysis X-ray spectra (EDX), and FTIR spectroscopy. The diameter distribution of ZnO and 2%wt ( Gd3+/ZnO) nanoparticles were confirmed by (TEM ) analysis, the average size of particles was found to be …
Effect Of Deinking And Peroxide Bleaching On The Physical Properties Of Recycled Newspapers, Al-Ghazaly Saad, Medhat Owda, Ahmed Ibrahim, Mohamed Bassiouni
Effect Of Deinking And Peroxide Bleaching On The Physical Properties Of Recycled Newspapers, Al-Ghazaly Saad, Medhat Owda, Ahmed Ibrahim, Mohamed Bassiouni
Al-Azhar Bulletin of Science
Paper recycling for producing a new paper that can be used from old spent paper has gained increased interest, and this process helps prevent the paper from accumulating in landfills, reducing pollution and greenhouse gas emissions. In this work old newspaper (ONP) supplied from Al-Ahram Press is de-inked by washing process using sodium hydroxide, surfactant then hydrogen peroxide was applied to bleach the recycled deinked ONP. Following single-stage bleaching, the fiber properties of the pulp (brightness, tensile, tear strength, and burst index) were determined. The Effect of hydrogen peroxide dose, consistency, and temperature on the pulp brightness were studied. The …
Synthesis And Characterization Of (Aam-Co-Ahps)/Mmt Hydrogel Composites For The Efficient Capture Of Methylene Blue From Aqueous Solution, Amin Elkony, Ahmed Ibrahim, Maher Abu El-Farah, Farg Abd-Elhai
Synthesis And Characterization Of (Aam-Co-Ahps)/Mmt Hydrogel Composites For The Efficient Capture Of Methylene Blue From Aqueous Solution, Amin Elkony, Ahmed Ibrahim, Maher Abu El-Farah, Farg Abd-Elhai
Al-Azhar Bulletin of Science
In this study, Acrylamide-co-3-Allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt/ montmorillonite [(AAm-co-AHPS)/MMT)] hydrogel composite was synthesis via in situ free-radical copolymerization. The swelling properties and adsorption efficiency of MB were studied. Effect of AHPS ratio on the properties of hydrogel composite was investigated at different AAm/AHPS molar ratio of 100/0, 95/5, 90/10, 85/15, and 80/20. The highest swelling ratio (49.71 g/g) was observed for the composite containing 15% AHPS. The hydrogel composites were characterized using FTIR, TGA, XRD, and SEM. The effects of contact time, dye concentration, pH, adsorbent dose, and temperature on the adsorption capacity of MB were studied. Additionally, the reusability …
Impact Of Red Algae And Different Gamma Irradiation Doses On The Physicochemical Properties And Biodegradation Rate Of Epdm/Eva/Tps Blend, Ahmed Siddiq, Mohamed Ghobashy, Sayed Mousa, Hamdi Nasr, Ahmed Atalla
Impact Of Red Algae And Different Gamma Irradiation Doses On The Physicochemical Properties And Biodegradation Rate Of Epdm/Eva/Tps Blend, Ahmed Siddiq, Mohamed Ghobashy, Sayed Mousa, Hamdi Nasr, Ahmed Atalla
Al-Azhar Bulletin of Science
Algae-based bioplastic were prepared during this work to show the impact of red algae incorporation and gamma irradiation dose on the biodegradation and physicochemical properties of EPDM/EVA/TPS-algae blend. It was found that red algae increasing resulted in increasing of water uptake ratio and decreasing of crosslinking density percentage, also mechanical properties was enhanced by incorporation of red algae from 5 to 20wt.% but further addition of algae i.e. 30wt.% made the sample fragile and decreasing the mechanical properties. While gamma irradiation dose increasing causes decline of mechanical properties and slightly decreasing of both water uptake and crosslinking density percentage which …
Effect Of Oily Wastewater Head Spills Of The Refineries On The Diffusion Rate And Contamination Of Soils – A Case Study Of Kawergosek (Erbil City) Refinery, Frzand K. Ahmed Medhat
Effect Of Oily Wastewater Head Spills Of The Refineries On The Diffusion Rate And Contamination Of Soils – A Case Study Of Kawergosek (Erbil City) Refinery, Frzand K. Ahmed Medhat
Polytechnic Journal
Field study works have been carried out to investigate the diffusion rate of oily wastewater on clayey soils and measuring the degree of contamination with chemical components for both horizontal and vertical directions. Three pits have been prepared for this work with 30 cm in diameter and 50 cm in depth, which are lying on a straight line and 100 cm clear distance between them. Three, 30 cm diameter plastic pipes were fixed inside the pits having the length of 50 cm, 150 cm, and 200 cm, respectively, to study the effect of the height of the spilled oily wastewater …
Effect Of Oily Wastewater Head Spills Of The Refineries On The Diffusion Rate And Contamination Of Soils – A Case Study Of Kawergosek (Erbil City) Refinery, Frzand K. Ahmed Medhat
Effect Of Oily Wastewater Head Spills Of The Refineries On The Diffusion Rate And Contamination Of Soils – A Case Study Of Kawergosek (Erbil City) Refinery, Frzand K. Ahmed Medhat
Polytechnic Journal
Field study works have been carried out to investigate the diffusion rate of oily wastewater on clayey soils and measuring the degree of contamination with chemical components for both horizontal and vertical directions. Three pits have been prepared for this work with 30 cm in diameter and 50 cm in depth, which are lying on a straight line and 100 cm clear distance between them. Three, 30 cm diameter plastic pipes were fixed inside the pits having the length of 50 cm, 150 cm, and 200 cm, respectively, to study the effect of the height of the spilled oily wastewater …
Corrosion Inhibition Of Casein As A Natural Protein For 316l Stainless Steel In Simulated Body Fluid, Aisha Hendy, Jehan Elnady, Nazly Hassan, T. Tamer, Amal Ahmed, Rabab Abou Shahba
Corrosion Inhibition Of Casein As A Natural Protein For 316l Stainless Steel In Simulated Body Fluid, Aisha Hendy, Jehan Elnady, Nazly Hassan, T. Tamer, Amal Ahmed, Rabab Abou Shahba
Al-Azhar Bulletin of Science
The importance of biomaterials is increased steadily with the augmentation of population and aging. In this research, casein, a protein present in milk, used to modify the 316L stainless steel (316L SS) alloy surface, used in medical application, against corrosion in the corrosive body fluid. Due to the presence of hetero-atoms in its moiety, casein has the ability to form a protective thin layer. Self-assembled monolayers (SAMs) technique is a common tool providing a well ordered thin film on the metallic surface. Casein was assumed to form SAMs on the 316L SS surface and the corrosion inhibition efficiency was examined …
Ion Chromatographic Determination Of Yttrium After Separation From Dysprosium Simultaneously With Individual Quantification Of Rare Earth Elements, Sherien Ahmed
Al-Azhar Bulletin of Science
A particular ion chromatographic method for yttrium determination after separation from dysprosium simultaneously with individual quantification of rare earth elements has been modified. Selective separation of yttrium from dysprosium plus the other thirteen rare earth elements was achieved by gradient elution using oxalic / diglycolic acid eluent mixture on IonPac CS5A separating column. The separated ions were then detected using 4-(2-pyridylazo)resorcinol (PAR) at 530 nm. The optimized method was subsequently validated by the analysis of a reference sample from Abu Rusheid area followed by its application on two geological materials from Wadi Khuda-Wadi Shut area and Abu Tartour phosphate deposits. …
Preparation Of Activated Carbon From Ion Exchange Resin Waste And Its Application For Manganese Removal From Groundwater, A. Swelam, Yahia Gedamy, Ahmed El.Shahed
Preparation Of Activated Carbon From Ion Exchange Resin Waste And Its Application For Manganese Removal From Groundwater, A. Swelam, Yahia Gedamy, Ahmed El.Shahed
Al-Azhar Bulletin of Science
The present study aims to synthesize an activated carbon adsorbent (S-AC, P-AC and OH-AC) from polystyrene divinyl benzene waste under different carbonization temperature (450oC and 900 oC and activation conditions (H2SO4, H3PO4 or NaOH). It being characterized and applied as an adsorbent for manganese removal from groundwater. FTIR results indicate that the changes in the peak intensities clear that the binding process was occurring on the surface of the adsorbent. Different factors such as solution pH, adsorbent dosage, contact time, temperature and Mn(II) initial concentration were investigated. The results showed that manganese adsorption capacity decreases with the increase of the …
Removal Of Some Advanced Dyes From Aqueous Solution Using Modified Kaolinite Clay, Abeer Emam, Mohamed Abdel Khalek
Removal Of Some Advanced Dyes From Aqueous Solution Using Modified Kaolinite Clay, Abeer Emam, Mohamed Abdel Khalek
Al-Azhar Bulletin of Science
Kaolin mineral and its modified forms were used for dye removal from aqueous solutions. The affecting parameters such as pH, dye concentration and contact time on the removal performance were investigated. Three different dyes (acid Green 25, Basic Blue 3 and Disperse Orange 13) were studied. The removal has a higher rate at initial period of contact time. The equilibrium is achieved at 120 min. The adsorption is occurring through transport of dye molecules from solution to solid surface. Then, they diffused into the pores. The order of adsorption was: Basic blue 3 > Acid Green 25 > Disperse Orange 13. The …