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Nabawia A. Gomaa
Publications - 7
Citations - 419
Nabawia A. Gomaa is an academic researcher. The author has contributed to research in topics: Sorption & Sorbent. The author has an hindex of 6, co-authored 7 publications receiving 332 citations.
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Journal ArticleDOI
Uranium extraction using magnetic nano-based particles of diethylenetriamine-functionalized chitosan: Equilibrium and kinetic studies
Mohammad G. Mahfouz,Ahmed A. Galhoum,Nabawia A. Gomaa,Sayed S. Abdel-Rehem,Asem A. Atia,Thierry Vincent,Eric Guibal +6 more
TL;DR: Magnetic nano-based particles of diethylenetriamine-functionalized chitosan have been synthesized before being characterized by elemental analysis, FT-IR spectroscopy, XRD, AFM, TEM and VSM analysis.
Journal ArticleDOI
Cysteine-Functionalized Chitosan Magnetic Nano-Based Particles for the Recovery of Light and Heavy Rare Earth Metals: Uptake Kinetics and Sorption Isotherms
Ahmed A. Galhoum,Mohammad G Mafhouz,Sayed T. Abdel-Rehem,Nabawia A. Gomaa,Asem A. Atia,Thierry Vincent,Eric Guibal +6 more
TL;DR: Experimental data show that the pseudo second-order rate equation fits the kinetic profiles well, while sorption isotherms are described by the Langmuir model and Thermodynamic constants demonstrate the spontaneous and endothermic nature of sorption.
Journal ArticleDOI
Diethylenetriamine-functionalized chitosan magnetic nano-based particles for the sorption of rare earth metal ions [Nd(III), Dy(III) and Yb(III)]
Ahmed A. Galhoum,Mohammad G. Mahfouz,Sayed T. Abdel-Rehem,Nabawia A. Gomaa,Asem A. Atia,Thierry Vincent,Eric Guibal +6 more
TL;DR: In this article, the recovery of three rare earth (RE) metals ions was investigated using hybrid chitosan-magnetic nano-based particles functionalized by diethylenetriamine (DETA).
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Amino Acid Functionalized Chitosan Magnetic Nanobased Particles for Uranyl Sorption
Ahmed A. Galhoum,Mohammad G. Mahfouz,Asem A. Atia,Sayed T. Abdel-Rehem,Nabawia A. Gomaa,Thierry Vincent,Eric Guibal +6 more
TL;DR: In this article, the effect of pH on sorption performance is first investigated before evaluating uptake kinetics and sorption isotherms, and metal desorption and sorbent recycling are finally carried out for five successive cycles of sorption/desorption.
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Dy(III) recovery from dilute solutions using magnetic-chitosan nano-based particles grafted with amino acids
Ahmed A. Galhoum,Asem A. Atia,Mohammad G. Mahfouz,Sayed T. Abdel-Rehem,Nabawia A. Gomaa,Thierry Vincent,Eric Guibal +6 more
TL;DR: Magnetic-chitosan nano-based particles were successfully prepared by a simple one-pot co-precipitation method before being functionalized with three different amino acid groups (i.e., alanine, serine, and cysteine) using epichlorohydrin as the linking agent.