Liquid-liquid Extraction and Recovery of Pd(II) from Nitric Acid Medium Using Green Diesel as Extractant

Masry, B. A.; Zeid, Mohammad Mohammad; Kassem, A.T.; Noweir, H.G.; Saad, Ebtissam Ahmad; Daoud, J. A.

doi:10.21315/jps2018.29.2.3

Cited by 7 publications

(1 citation statement)

References 12 publications

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“…The recovery and separation of rare metals such as lithium, 1 palladium, 2,3 ruthenium, rhodium, 4 platinum, 5 lanthanides, 6 gold, 7 silver , 8 and molybdenum 9 is currently of great concern with regard their important applications in industrial and nuclear technology. Molybdenum and tungsten are strategic metals used in different industrial and nuclear applications.…”

Section: Introductionmentioning

confidence: 99%

Sorption behavior of tungsten and molybdenum on TVEX‐TOPO resin from nitric acid solution

Masry

Daoud

2021

J of Chemical Tech & Biotech

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BACKGROUND TVEX‐TOPO, which is a commercial low‐cost macroporous copolymer resin containing 50% (w% Extractant fraction of total adsorbent mass) trioctylphosphine oxide (TOPO) was used for solid–liquid extraction of tungsten(VI) (W(VI)) and molybdenum(VI) (Mo(VI)) from nitric acid solution. The different parameters affecting the sorption process of both metal ions such as contact time, [HNO3], initial concentrations, V/m ratio and temperature were separately studied. RESULTS The maximum sorption capacity of TVEX‐ TOPO resin was found to be 17.6 mg g−1 Mo(VI) and 10.7 mg g−1 W(VI) after five sorption stages. Thermodynamic parameters ∆H, ∆G, ∆S were found to be −51.7, −4.3 kJ mol−1 and 157 J mol−1 K−1 for Mo(VI) and −27.4, 1 kJ mol−1 and −93 J mol−1 K−1 for W(VI), respectively. The maximum desorption of W(VI) and Mo(VI) of 97.5% was achieved by reductive stripping with 2% and 4% ascorbic acid, respectively. The highest separation coefficient SMo/W was found to be 13.5 and 10 at V/m = 100 and [HNO3] = 0.1 mol L–1. The W(VI)/TVEX‐TOPO system was found to obey the Langmuir isotherm model with regression factor R2 = 0.999 and qm = 10.5 mg g−1, which is close to the maximum sorption capacity, which equals 10.7 mg g−1. Adsorption kinetics results indicated that the pseudo‐first‐order model is more applicable to W(VI) as qe(exp.) = 4.2 mg g−1 is close to qe(cal.) = 4.3 mg g−1, but Mo(VI) was found to fit with the pseudo‐second order‐model. CONCLUSION Recovery of Mo(VI) and W(VI) was applied to dental metal filaments waste of (Co‐Cr‐Mo) alloys using TVEX‐TOPO and a flow sheet describing the proposed process was given. © 2021 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Sorption behavior of tungsten and molybdenum on TVEX‐TOPO resin from nitric acid solution

Masry

Daoud

2021

J of Chemical Tech & Biotech

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Gamma radiation synthesis of hydroxyethyl cellulose/acrylic acid/CYANEX 471X hydrogel for silver ions capture from acidic nitrate medium

Masry,

Gayed,

Daoud

2024

Cellulose

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The current novelty in this study is to recover silver ion with selective extractant such as cyanex 471X (triisobutylphosphine sulfide) through a clean and green method with high efficiency. Herein, a sustainable hydrogel (HEC/AAc/CX3) was fabricated from triisobutylphosphine sulfide, hydroxyethyl cellulose (HEC), and acrylic acid (AAc) using gamma irradiation polymerization and implanted for the sorption of silver Ag (I) ions from a nitrate acidic medium. Different techniques were employed for characterization of HEC/AAc/CX3 hydrogel such as FT-IR, SEM, XRD, and EDX, before and after the sorption process of Ag(I) ions. Gel content and swelling kinetics ratio of hydrogels at different irradiation doses (10, 20, 30, 40, and 50 kGy) were studied. The Fickian diffusion model results indicate that HEC/AAc/CX3 hydrogel is non-Fickian diffusion, which confirmed that the diffusion and relaxation rates are compatible and were selected for further sorption of Ag(I). The irradiated HEC/AAc/CX3 hydrogels, which contain 0.1 g of cyanex 471X, were employed for batch sorption of 100 mg/L Ag(I) from an acidic solution, and the suggested conditions were pH = 1, time = 60, and v/m = 0.05 L/g, which gives a sorption percentage of 75%. The values of thermodynamic parameters ΔH, ΔG, and ΔS were evaluated as—62.80 kJ/mol, 5 kJ/mol, and -227 J/mol, which indicate that the sorption system was exothermic and nonspontaneous in nature. The maximum adsorption capacity of irradiated HEC/AAc/CX3 for Ag(I) was found to be 12 mg. g−1 at 298 K. Furthermore, the maximum desorption percent of Ag ions from HEC/AAc/CX3 was found to be 70% and achieved with 0.5 M NH4SCN after one desorption cycle. The prepared hydrogel proved its selectivity towards silver ions with facile desorption steps and reusability cycles. Graphical Abstract

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Sorption of Mo (VI) From Nitric Acid Solution Using SM-4 Copolymer Resin Impregnated with CYANEX 923

Noweir

Masry

Zeid

et al. 2021

J Inorg Organomet Polym

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Liquid-liquid Extraction and Recovery of Pd(II) from Nitric Acid Medium Using Green Diesel as Extractant

Cited by 7 publications

References 12 publications

Sorption behavior of tungsten and molybdenum on TVEX‐TOPO resin from nitric acid solution

Sorption behavior of tungsten and molybdenum on TVEX‐TOPO resin from nitric acid solution

Gamma radiation synthesis of hydroxyethyl cellulose/acrylic acid/CYANEX 471X hydrogel for silver ions capture from acidic nitrate medium

Sorption of Mo (VI) From Nitric Acid Solution Using SM-4 Copolymer Resin Impregnated with CYANEX 923

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