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Your search keyword '"E. M. El Afifi"' showing total 2 results
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2 results on '"E. M. El Afifi"'

1. Potential separation of zirconium and some lanthanides of the nuclear and industrial interest from zircon mineral using cation exchanger resin

Author

H. E. Rizk, Mohamed F. Attallah, A. M. Shahr El-Din, and E. M. El Afifi

Subjects
Lanthanide, Zirconium, Mineral, Polymers and Plastics, Ion exchange, Chemistry, Inorganic chemistry, Cationic polymerization, chemistry.chemical_element, 02 engineering and technology, 021001 nanoscience & nanotechnology, Surfaces, Coatings and Films, Separation process, 020401 chemical engineering, Solid phase extraction, 0204 chemical engineering, Physical and Theoretical Chemistry, 0210 nano-technology, Zircon
Abstract

The present study is conducted for developing separation of some elements of nuclear interest from zirconium-concentrate explored from Egyptian zircon mineral, using certain cationic exchangers. Th...

Published
2021
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2. Synthesis and application of Poly(acrylamide-itaconic Acid)/Zirconium tungstate composite material for cesium removal from different solutions

Author

M. Holial, E. M. El Afifi, and K. F. Allan

Subjects
021110 strategic, defence & security studies, Thermogravimetric analysis, Materials science, Scanning electron microscope, General Chemical Engineering, Composite number, 0211 other engineering and technologies, Zirconium tungstate, 02 engineering and technology, 010403 inorganic & nuclear chemistry, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, Adsorption, chemistry, Differential thermal analysis, Itaconic acid, Fourier transform infrared spectroscopy, Composite material
Abstract

This study is conducted to find the conditions required to synthesize composite material for cesium (134Cs+) removal from the generated liquid waste associated with nuclear, medical, industrial, and/or research activities. The study shows that the optimum conditions required for synthesizing “Poly [acrylamide (AM)-itaconic acid (IA)]/N,N′-methylenediacrylamide (DAM)/Zirconium tungstate (ZrW)” or “Poly(AM-IA)/DAM/ZrW” are 0.01 g DAM dose as a cross-linker, a co-monomer concentration of 20%, a co-monomer composition (AM-IA) (12:88), and 0.03 g (melted at 450 °C–500 °C) ZrW with gamma irradiation dose of 30 kGy. The composite material was characterized by Fourier infrared (FTIR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), differential thermal analysis (DTA), scanning electron microscope (SEM), and Brunauer-Emmett-Teller (BET) surface area measurements. The adsorption performance of the composite was investigated. The maximum removal efficiency of 134Cs+ ions was found to be 93% in m...

Published
2015
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