Intensive Studies for Modeling and Thermodynamics of Fusion Digestion Processes of Abu Rusheid Mylonite Rocks

Eliwa, Ahmed A.; Gawad, Ebrahim A.; Mubark, Amal E.; abdelfattah, nasr abdelaziz

doi:10.1007/s11837-021-04837-1

JOM

2021

DOI: 10.1007/s11837-021-04837-1

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Intensive Studies for Modeling and Thermodynamics of Fusion Digestion Processes of Abu Rusheid Mylonite Rocks

Ahmed A. Eliwa

Ebrahim A. Gawad

Amal E. Mubark

et al.

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Cited by 10 publications

References 20 publications

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Functionalization of cellulose pentamine as a promising nano‐amorphous sorbent for Zr(IV) and Hf(IV) ions recovery

Mubark,

Falila,

Mohamed

et al. 2024

Can J Chem Eng

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Due to the rising worldwide need for commercial zirconium and hafnium metals, various research studies have been conducted to investigate their extraction from ores and recovery from other waste products. By chorinating cellulose and then aminating it with tetraethylene pentamine, a cellulose‐tetraethylene pentamine (Cell‐TEPA) nanosorbent was synthesized, which resulted in active groups responsible for binding processes with the appropriate metal ions using a straightforward approach. The composition, chemical characteristics, and physical attributes of the Cell‐TEPA nanosorbent were comprehensively examined using a range of equipment, such as X‐ray diffraction (XRD), scanning electron microscope–energy dispersive X‐ray analysis (SEM–EDX), Fourier‐transform infrared spectroscopy (FT‐IR), Brunauer–Emmett–Teller (BET), and thermal gravimetric analysis (TGA). When bound to the Cell‐TEPA nanosorbent, Zr(IV) and Hf(IV) exhibited the highest absorption capacities of 70.4 and 38.2 mg/g, respectively. The most favourable sorption conditions were achieved with a feed solution pH of 1.5, a stirring period of 45 min, a metal ion concentration of 100 mg/L, and room temperature (25 ± 2°C). The adsorption data were consistent with both the Langmuir isothermal model and the pseudo‐2nd‐order reaction model. The Cell‐TEPA nanosorbent effectively extracted zirconium and hafnium ions from leach liquors derived from Wadi Rahba ore sample and Abu Khashaba concentrate sample, demonstrating their potential for future applications.

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Functionalization of cellulose pentamine as a promising nano‐amorphous sorbent for Zr(IV) and Hf(IV) ions recovery

Mubark,

Falila,

Mohamed

et al. 2024

Can J Chem Eng

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Efficacious Recovery of Zirconium and Yttrium Ions from Effluents Using a Gamma-Irradiated Reduced Graphene Oxide Polymeric Composite

Eliwa

2023

J Inorg Organomet Polym

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There are many great uses for heavy elements that are expanding daily and generating enormous amounts of effluents. Therefore, tremendous scientific efforts in removing, recovering, and recycling them are carried out to prevent these harmful effects on the environment and human health. The polyacrylic-carboxymethyl cellulose-trioctyl amine/reduced graphene oxide adsorbent (AA-CMC-TOA/rGO) was synthesized as a promising sorbent for Zr4+ and Y3+ ions by gamma irradiation for a mixture of acrylic acid, carboxymethyl cellulose, and trioctyl amine as an organic solvent. A complete characterization of the manufactured composite was carried out to find out its chemical and physical properties several techniques such as XRD, EDX, SEM, FT-IR, TGA-DTA, and BET. Several factors affecting the Zr4+ and Y3+ adsorption processes were studied to set the best conditions that achieve the extreme loading capacity of Zr4+ and Y3+ ions. Loading capacities of 0.99 and 1.07 mmol g−1 were achieved for Zr4+ and Y3+, respectively. The results of the kinetic models indicated that the adsorption reactions of Zr4+ and Y3+ ions were carried out via a chemical reaction mechanism. Langmuir, Dubinin–Radushkevich, and Redlich–Peterson models accurately described the adsorption isotherm data by proving their chemical nature. The results of thermodynamics added evidence of the chemical nature, spontaneous, and endothermic nature of the adsorption processes. A complete retrieval for Zr4+ and Y3+ ions contents located in the effluent was efficiently achieved using AA-CMC-TOA/rGO sorbent which proved its uses as a promising sorbent.

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Preparation of zirconium oxide nanoparticles from rosette concentrate using two distinct and sequential techniques: hydrothermal and fusion digestion

et al. 2023

Self Cite

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The preparation of zirconium dioxide nanoparticles (ZrO2-NPs) as hard ceramics was accomplished from rosette zircon concentrate through two consecutive alkaline digestion reactions. The rosette zircon concentration in the Abu Khashaba area consists mainly of zircon and monazite minerals. Using different operating conditions, the hydrothermal digestion by autoclave and the conventional alkaline fusion methods was performed upon the non-magnetic concentrate of rosette in order to complete the removal of monazite firstly and to complete the purification of zircon metal secondly. All monazite content and undesirable impurities were removed by the hydrothermal method using optimal digestion conditions such as 4 mol/L NaOH solutions, 1/6 solid to liquid, 2 h dissolving time, and a temperature of 423 K. The residual zircon (84% Zr) was subjected to complete digestion using NaOH with a zircon-to-alkali ratio of 1/1.5 and a fusion temperature of 923 K. ZrO2-NPs were synthesized using the hydrothermal technique at 473 K for 7 h. The calcined ZrO2-NPs were characterized by X-ray diffraction, scan electron microscope, and transmittance electron microscope. Purified silica was also obtained as a by-product from washing solutions of fused zircon.

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Intensive Studies for Modeling and Thermodynamics of Fusion Digestion Processes of Abu Rusheid Mylonite Rocks

Cited by 10 publications

References 20 publications

Functionalization of cellulose pentamine as a promising nano‐amorphous sorbent for Zr(IV) and Hf(IV) ions recovery

Functionalization of cellulose pentamine as a promising nano‐amorphous sorbent for Zr(IV) and Hf(IV) ions recovery

Efficacious Recovery of Zirconium and Yttrium Ions from Effluents Using a Gamma-Irradiated Reduced Graphene Oxide Polymeric Composite

Preparation of zirconium oxide nanoparticles from rosette concentrate using two distinct and sequential techniques: hydrothermal and fusion digestion

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