Advanced Technology and New Materials Researches Institute

Alexandria, Egypt

Advanced Technology and New Materials Researches Institute

Alexandria, Egypt
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Elkady M.F.,Alexandria University | Elkady M.F.,Advanced Technology and New Materials Researches Institute | Farag S.,Genetic Engineering and Biotechnology Research Institute | Haddad A.M.,Genetic Engineering and Biotechnology Research Institute
Journal of Pure and Applied Microbiology | Year: 2016

Nano-magnetite was successfully immobilized onto the isolated lead resistant bacteria species using co-precipitation technique to synthesize novel nano-magnetic bacterial bio-composite material. This isolated bacteria was identified as Enterobacter sp. B2 under accession number KT213696. Scanning Electron Microscope micrographs implied that the magnetite nano-particles were dispersed onto the surface of bacteria. The magnetic properties of magnetic bio-composite material were determined using Vibrating Sample Magnetometer (VSM). VSM evident that the bio-composite is characterized by its supermagnetic properties with 50.8 emu/g saturation magnetization that facilitate the material handling and separation. The feasibility of the novel synthesized magnetic bio-composite material for lead decontamination was explored against the variation of the processing parameters during the bioremediation process. The results elucidated that the equilibrium of lead bioremediation process achieved 90.5% within 60 minutes with bio-composite dosage of 0.1 g. The increments of both initial lead concentration and solution temperature have negative impact on the bio-remediation process.


Hassan H.S.,Advanced Technology and New Materials Researches Institute | Elkady M.F.,Alexandria University | Elkady M.F.,Advanced Technology and New Materials and Research Institute ATNMRI | Farghali A.A.,Beni Suef University | And 2 more authors.
Journal of the Taiwan Institute of Chemical Engineers | Year: 2017

An innovative magnetic nano-fiber composite was prepared via hybridization nano-magnetite zinc oxide and cellulose acetate (CA) using electrospinning technique. The affinity of synthesized composite nano-fiber for phenol adsorption from aqueous solution was monitored. Different parameters that effected on the fabrication of pure CA nano-fiber were optimized. The most proper fabricated CA nano-fiberr was achieved using 10% CA that was dissolved at acetone and dimethylacetamide (DMAc) solution with mixing ratio 2:1 the electrospinning applied voltage was 20KV and the appropriate separation distance was 25cm using 0.5ml/h flow rate. Different weights of magnetic zinc oxide were immobilized onto the most proper fabricated CA nano-fiber (10% CA) to fabricate novel ZnO magnetic CA composite nanofiber. The various fabricated CA based nano-fibers either after and before magnetic ZnO immobilization were characterized using SEM, XRD and FTIR. The phenol sorption affinities of the various fabricated CA nano-fibers were tested using synthetic polluted wastewater in batch manner. It was recorded that magnetite ZnO. CA hybrid nanofiber with 0.1% magnetic zinc oxide immobilization represents the most efficient fabricated nanofiber compared with other studied fabricated CA based nano-fiber. This novel composite nano-fiber has ability to adsorb 64% of phenol within 2h. The various parameters affecting the phenol sorption process onto this novel fabricated composite were optimized. It was evident that the increment at both the solution pH and temperature has negative impact on the phenol sorption process onto the novel fabricated magnetic ZnO. CA composite nano-fiber. © 2017 Taiwan Institute of Chemical Engineers.


Shokry Hassan H.,Advanced Technology and New Materials Researches Institute | Elkady M.F.,Advanced Technology and New Materials Research Institute ATNMRI | Elkady M.F.,Alexandria University | Hafez E.E.,Arid Lands Cultivation Research Institute ALCRI | Salama E.,Environment and Natural Materials Research Institute ENMRI
Nanoscience and Nanotechnology - Asia | Year: 2017

Recently human resistance to external pathogen has led to the development of anti-bacterial wound dress, accordingly, the development of anti-bacterial wound dress using nano-Zinc oxide matrix has been examined. ZnO in nanoparticles morphological structure was synthesized using hydrothermal technique and were directly immobilized into polymer blend matrix composed of alginate-PVA. The hybrid mixture was fabricated by casting solvent evaporation into membrane film. The influence of variable ZnO amounts blended with the polymeric matrix in different weight ratios from 5% to 30% W/V on the fabricated composite membrane films was examined. The mechanical properties of the fabricated zinc oxide membranes were compared using the tensile test Machine to select the best concentration of incorporated zinc oxide nanoparticles into the polymer blend. The most properly prepared membrane was characterized using SEM, XRD, FT-IR and TGA. The most proper mechanical properties of ZnO polymeric membrane nanocomposite were recorded at blending ratio of 20% W/V. Both the XRD and FT-IR analyses indicated that possible interaction may be established between polymers and nanoparticles above the optimum blending ratio of 20% W/V declining the fabricated membrane mechanical properties. The antibacterial activity of the prepared membranes was assessed qualitatively by colony forming units (CFU) measurements. The antibacterial activity demonstrated a significant antibacterial activity against Staphylococcus aureus and Escherichia coli. This antibacterial activity was improved by increasing the incorporation of ZnO nanoparticle concentration in the composite membrane. © 2017 Bentham Science Publishers.


Shalaby T.I.,Medical Research Institute | El-Kady M.F.,Alexandria University | El-Kady M.F.,Advanced Technology and New Materials Researches Institute | Zaki A.E.H.M.,Medical Research Institute | El-Kholy S.M.,Medical Research Institute
Water Science and Technology: Water Supply | Year: 2017

Novelmagnetic cellulose acetate (CA) nanofibers were fabricated using an electrospinning process. Coprecipitated magnetite iron oxide nanoparticles were immobilized onto CA nanofibers at different weight ratios (0.2-2.5% wt/v) with a CA concentration of 15% (wt %), applied electric voltage of 20 kV, feeding rate of 1.5 ml/h and 7 cm distance between needle tip and collector. The prepared iron oxide nanoparticles were characterized using X-ray diffraction, a transmission electronmicroscope, a Fourier transform infrared spectrophotometer (FT-IR) and a vibrating sample magnetometer (VSM). The magnetic nanofibers were characterized by scanning electron microscopy, FT-IR, thermogravimetric analysis and VSM. The fabricated composite nanofibers were evaluated as a sorbent matrix for lead decontamination from aqueous solution using a batch technique. The influence of solution pH, contact time and adsorbent concentration on the removal efficiency was investigated. Adsorption kinetics models and isothermswere applied to the lead decontamination process onto the fabricated composite nanofibers. The kinetics of the sorption process revealed that the pseudo-second-order model fitted relatively better than the pseudo-first-ordermodel.On the other hand, both the Langmuir and Freundlich isotherms gave a comparable fit to the adsorption data, with a high coefficient of regression of 0.999. © IWA Publishing 2017.


Hassan H.S.,Advanced Technology and New Materials Researches Institute | Elkady M.F.,Sudan University of Science and Technology | Elkady M.F.,Advanced Technology and New Materials and Research Institute ATNMRI | Farghali A.A.,Beni Suef University | And 2 more authors.
Journal of the Taiwan Institute of Chemical Engineers | Year: 2017

An innovative magnetic nano-fiber composite was prepared via hybridization nano-magnetite zinc oxide and cellulose acetate (CA) using electrospinning technique. The affinity of synthesized composite nano-fiber for phenol adsorption from aqueous solution was monitored. Different parameters that effected on the fabrication of pure CA nano-fiber were optimized. The most proper fabricated CA nano-fiberr was achieved using 10% CA that was dissolved at acetone and dimethylacetamide (DMAc) solution with mixing ratio 2:1 the electrospinning applied voltage was 20 KV and the appropriate separation distance was 25 cm using 0.5 ml/h flow rate. Different weights of magnetic zinc oxide were immobilized onto the most proper fabricated CA nano-fiber (10% CA) to fabricate novel ZnO magnetic CA composite nanofiber. The various fabricated CA based nano-fibers either after and before magnetic ZnO immobilization were characterized using SEM, XRD and FTIR. The phenol sorption affinities of the various fabricated CA nano-fibers were tested using synthetic polluted wastewater in batch manner. It was recorded that magnetite ZnO[sbnd]CA hybrid nanofiber with 0.1% magnetic zinc oxide immobilization represents the most efficient fabricated nanofiber compared with other studied fabricated CA based nano-fiber. This novel composite nano-fiber has ability to adsorb 64% of phenol within 2 h. The various parameters affecting the phenol sorption process onto this novel fabricated composite were optimized. It was evident that the increment at both the solution pH and temperature has negative impact on the phenol sorption process onto the novel fabricated magnetic ZnO[sbnd]CA composite nano-fiber. © 2017 Taiwan Institute of Chemical Engineers


Shokry Hassan H.,Advanced Technology and New Materials Researches Institute | Kashyout A.B.,Advanced Technology and New Materials Researches Institute | Morsi I.,Arab Academy for Science and Technology | Nasser A.A.A.,Arab Academy for Science and Technology | Raafat A.,Arab Academy for Science and Technology
Sensing and Bio-Sensing Research | Year: 2014

A novel structures of nanomaterials gas sensors array constructed using ZnO, and ZnO doped with Al via sol-gel technique. Two structure arrays are developed; the first one is a double sensor array based on doping with percentages of 1% and 5%. The second is a quadrature sensor array based on several doping ratios concentrations (0%, 1%, 5% and 10%). The morphological structures of prepared ZnO were revealed using scanning electron microscope (SEM). X-ray diffraction (XRD) patterns reveal a highly crystallized wurtzite structure and used for identifying phase structure and chemical state of both ZnO and ZnO doped with Al under different preparation conditions and different doping ratios. Chemical composition of Al-doped ZnO nanopowders was performed using energy dispersive X-ray (EDS) analysis. The electrical characteristics of the sensor are determined by measuring the two terminal sensor's output resistance for O2, H2 and CO2 gases as a function of temperature. © 2014 Elsevier Ltd.


Elkady M.F.,Alexandria University | Elkady M.F.,Advanced Technology and New Materials Research Institute ATNMRI | Hassan H.S.,Advanced Technology and New Materials Researches Institute
Current Nanoscience | Year: 2015

In spite of zinc oxide nanoparticles proved good adsorbent for dyes, however, its agglomeration tendency in aqueous media, that corresponding to its hydrophobic nature declines its efficiency. Consequently, the prepared zinc oxide nanoparticles were encapsulated onto a polymer blend of alginate and polyvinyl alcohol to be formulated into bio-beads of zinc oxide. The produced bio-beads were characterized using SEM and XRD. The feasibility of the formulated bio-composite beads for C.I basic blue 41 (CB41) decolorization from aqueous solution was evaluated using batch technique. The experimental results at equilibrium were analyzed using different isotherm models to evaluate the equilibrium adsorption behavior of CB41 onto the prepared materials. It was indicated that, the equilibrium sorption data was fitted well by Freundlich, and Dubinin-Radushkevich isotherms compared to Langmuir and Temkin isotherms. Kinetic profile of the dye sorption process evident from the film diffusion of dyes on to hybrid beads controls the rate of process. © 2015 Bentham Science Publishers.


Elkady M.F.,Advanced Technology and New Materials Research Institute ATNMRI | Elkady M.F.,Alexandria University | Shokry Hassan H.,Advanced Technology and New Materials Researches Institute | El-Sayed E.M.,Advanced Technology and New Materials Research Institute ATNMRI
Journal of Chemistry | Year: 2015

As an innovative cation exchange material, nanozirconium tungestovanadate prepared using homogeneous precipitation technique was immobilized into alginate matrix and evaluated for cationic dye decolourization. Physicochemical properties of the prepared composite material were examined to determine its crystallinity, morphology, and ion exchange capacity. The SEM and TEM images of the prepared zirconium tungestovanadate identified that it was prepared in homogeneous structure with spherical shape in average diameter 22 nm. However, the optical microscope image of the composite matrix confirms the good distribution of nanozirconium tungestovanadate into the polymeric matrix. Batch technique was utilized to test the cation exchange efficiency of the prepared composite material toward C.I. basic violet 16 dye decolourization. The optimum immobilized dosage from nanozirconium tungestovanadate into the polymeric matrix to achieve 99% dye decolourization from 50 ppm initial dye concentration was recorded as 8 g/L. The dye sorption process onto the prepared material is described as an endothermic process. The dye sorption process at equilibrium was following both Langmuir and Freundlich isotherm models. The kinetic sorption behaviour of dye onto the composite matrix is correlated to pseudo-second-order equation model. Copyright © 2015 M. F. Elkady et al.


Elkady M.F.,Alexandria University | Elkady M.F.,Advanced Technology and New Materials Researches Institute | El-Aassar M.R.,Advanced Technology and New Materials Researches Institute | Hassan H.S.,Advanced Technology and New Materials Researches Institute
Polymers | Year: 2016

Acrylonitrile-Styrene co-polymer was prepared by solution polymerization and fabricated into nanofibers using the electrospinning technique. The nanofiber polarization was enhanced through its surface functionalization with carboxylic acid groups by simple chemical modification. The carboxylic groups' presence was dedicated using the FT-IR technique. SEM showed that the nanofiber attains a uniform and porous structure. The equilibrium and kinetic behaviors of basic violet 14 dye sorption onto the nanofibers were examined. Both Langmuir and Temkin models are capable of expressing the dye sorption process at equilibrium. The intraparticle diffusion and Boyd kinetic models specified that the intraparticle diffusion step was the main decolorization rate controlling the process. © 2016 by the authors.


El-Aassar M.R.,Donghua University | El-Aassar M.R.,Advanced Technology and New Materials Researches Institute | El-Kady M.F.,Alexandria University | El-Kady M.F.,Advanced Technology and New Materials Researches Institute | And 2 more authors.
Journal of the Taiwan Institute of Chemical Engineers | Year: 2016

In the present work, poly acrylonitrile-co-styrene (poly (AN-co-ST)) copolymer was prepared using solution polymerization. The synthesized copolymer was fabricated into nanofiber using electrospinning technique with an average diameter of approximately 220 nm, were successfully synthesized. This nanofiber was functionalized with surface carboxylic acid groups. Characterization of the poly (AN-co-ST) nanofiber and its modified nanofibers were studied by SEM, FTIR, and TGA, and the chemical modification process has positive effect on the mechanical properties of the produced nanofiber as elucidated from the tensile stress-strain test. The chemically modified copolymer nanofiber (CMCN) was evaluated for decolorization of C.I. Basic violet 14 from aqueous solutions. The decolorization process onto the nanofiber was relatively fast and the equilibrium was achieved within 30 min. The influence of the different parameters affecting the dye sorption process was established. The increment on both the pH and the temperature of the dye solution enhance the dye sorption onto the prepared chemically modified nanofiber. Meanwhile, the presence of cation salts accompanying the dye ions hinders the dye sorption process onto the prepared nanofiber. The chemically modified nanofiber proved its effectiveness as adsorbent material for dye decontamination from the polluted wastewater. © 2015 Taiwan Institute of Chemical Engineers.

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