Zobrazeno 1 - 10
of 31
pro vyhledávání: '"M. A. H. Hafez"'
Autor:
Zainab Abd Elbary, Khaled S. Abou-El-Sherbini, Ibrahim M.M. Kenawy, Abdalla A. Mousa, M. A. H. Hafez
Publikováno v:
Sustainable Environment Research, Vol 31, Iss 1, Pp 1-14 (2021)
The adsorption process of the industrialized dye Isolan Dark Blue 2SGL-01 (IDB) onto (Mg-Zn)/(Al-Fe)-(CO3)/Cl layered double hydroxides (LDHs) coded LDH21 and LDH22 and its calcined products CLDHs (CLDH21 and CLDH22), respectively, was investigated.
Publikováno v:
International Journal of Biological Macromolecules. 115:625-634
The new ion-imprinted guanyl-modified cellulose (II.Gu-MC) was prepared for the separation and determination of Cu (II) ions in different real samples. Several techniques such as Fourier Transform Infrared (FT-IR), scanning electron microscope (SEM),
Autor:
M. A. H. Hafez, Khaled S. Abou-El-Sherbini, Hesham R. Lotfy, Ibrahim M.M. Kenawy, Zaynab M.E.A. AbdElbary
Publikováno v:
Journal of Environmental Chemical Engineering. 3:2707-2721
The new CO 3 2− /Cl − layered double hydroxides (LDHs) (Mg (3−3 v ) Zn 3 v )/(Al (1− w ) Fe w ) were synthesized and calcined at 450 °C (CLDH), where v and w = 0, 0.1, 0.2, and/or 1, as adsorbents to remove anionic hazards such as Isolan Dar
Publikováno v:
International journal of biological macromolecules. 107
A novel chemically guanyl-modified cellulose (Gu-MC) - material has been synthesized for the adsorption of Cu2+, Cd2+, Hg2+, Pb2+ and Zn2+ metal ions from aqueous solution. Cellulose was pretreated with periodate prior to its condensation with aminog
Publikováno v:
Desalination. 250:62-70
The use of chemically modified silica gel N-(1-carboxy-6-hydroxy) benzylidenepropylamine (SiG-CHBPA), ion exchanger for removal and preconcentration of Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb in natural water samples collected from River Nile, Mediterr
Autor:
Mohamed E. Mahmoud, Magda A. Akl, Ezzat M. Soliman, Rabab R. A. Lashein, M. A. H. Hafez, Ibrahim M.M. Kenawy
Publikováno v:
Analytical Sciences. 24:381-387
Four chemically modified chelating silica gel phases (I - IV) with ion exchange groups were tested for their potential capability to selectively bind, extract and preconcentrate uranyl ions (UO(2)(2+)) from different aqueous solutions as well as ore
Publikováno v:
Russian Journal of Electrochemistry. 42:225-232
Some kinetic and activation thermodynamic functions for the electrodeposition of palladium, thallium, and tellurium from the best selected baths, viz. niclosamide bath [5-chloro-N-(2-chloro-4-nitrophenyl)-2-hydroxybenzamide] for Pd, alizarin red bath
Publikováno v:
Talanta. 53:749-760
The use of chemically modified chloromethylated polystyrene-PAN, CMPS-PAN (ion-exchanger) for the preconcentration and separation of total mercury after digestion in preparation for determination by cold vapour atomic absorption spectrometry (CVAAS)
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 63:75-83
The structure of the studied compounds was confirmed by elemental analysis, IR and NMR. TG and DTG data were used to study the kinetics of the thermal decomposition process of some new cyanine dispersed dyes derived from 2-[(p-chloro)-styryl]-6-[5-(3
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 65:723-736
The complexes formed by the chemically modified chloromethylated poly(styrene)-PAN (CMPS-PAN) as a resin chelating ion exchanger were characterized by infrared and potentiometry. The thermal degradation of pure CMPS-PAN resin and its complexes with A