Studies on effective interaction parameters in extraction of Pr and Nd using Aliquat 336 from NdFeB magnet-leaching solution: Multiple response optimizations by desirability function

Gorzin, Hesamoddin; Ghaemi, Ahad; Hemmati, Alireza; Maleki, Ali

doi:10.1016/j.molliq.2020.115123

Cited by 12 publications

(5 citation statements)

References 45 publications

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“…Hence, nanoparticles have found practical applications in diverse fields including biology, medicine, [2–14] biotechnology, chemistry, physics, agriculture, electronics, material sciences, [15–19] and hydrogen storage [20] . They play a notable role as nano‐catalysts, [21–31] nano‐adsorbents, and environment‐remediating agents [32–37] . The conventionally used physical and chemical methods [38,39] for the synthesis of metal/metal oxide nanoparticles are tedious, expensive, less efficient, and involve high energy and material consumption.…”

Section: Introductionmentioning

confidence: 99%

“…[20] They play a notable role as nano-catalysts, [21][22][23][24][25][26][27][28][29][30][31] nano-adsorbents, and environmentremediating agents. [32][33][34][35][36][37] The conventionally used physical and chemical methods [38,39] for the synthesis of metal/metal oxide nanoparticles are tedious, expensive, less efficient, and involve high energy and material consumption. Also, the toxic chemicals used and the hazardous by-products generated by these methods increase the pollution burden on the environment.…”

Section: Introductionmentioning

confidence: 99%

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Eco‐Friendly Synthesis of Iron Nanoparticles Using Green Tea Extract: Characterization and Evaluation of Their Catalytic, Anti‐oxidant and Anti‐bacterial Potentials

2023

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The green route for the synthesis of metal nanoparticles has emerged as a promising pathway due to its simple, non‐toxic, low‐cost, and environment‐friendly nature. In this study, eco‐friendly iron nanoparticles were successfully synthesized from the extract of green tea leaves. The synthesized nanoparticles were characterized by UV‐Visible, FT‐IR, SEM, EDX, TEM, and XRD techniques. The morphological analysis of the nanoparticles by SEM and TEM studies revealed that they were spherical in shape with particle size in the 30–70 nm range. The XRD investigation established the amorphous nature of the nanoparticles. The role of the phytochemicals of the tea extract as the reducing and stabilizing agents for the nanoparticles was confirmed by the FT‐IR analysis. The iron nanoparticles exhibited significant catalytic potential in the degradation of organic dyes‐ malachite green and methylene blue. The reactions followed pseudo‐first‐order kinetics and the percent degradation of 85.20 % for malachite green and 89.42 % for methylene blue was achieved in 20 min. and 10 min. respectively. The nano‐catalyst was reusable for three consecutive cycles of degradation reaction without any significant loss in its activity. The anti‐oxidant activity of the nanoparticles was studied by the DPPH assay wherein the nanoparticles exhibited a promising free radical scavenging ability of about 77 % with the IC50 value of 589.70 μg/mL. The anti‐bacterial activity of the nanoparticles was analyzed by the agar well diffusion method against four bacterial strains: gram‐positive Staphylococcus aureus, Bacillus subtilis, and gram‐negative Escherichia coli, Pseudomonas aeruginosa. The zones of inhibition and the Minimum Inhibitory Concentration (MIC) values of the nanoparticles were determined. The nanoparticles showed moderate toxicity against all the tested bacterial strains. The synthesis of the iron nanoparticles was rapid and simple and the results of the investigated applications were significant and promising.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Eco‐Friendly Synthesis of Iron Nanoparticles Using Green Tea Extract: Characterization and Evaluation of Their Catalytic, Anti‐oxidant and Anti‐bacterial Potentials

2023

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“…Applying experimental design, a quadratic approximation based on CCD is frequently utilized to develop a response surface model. The standard and complete quadratic model for k variables contains (k + 1)(k + 2)/2 parameters in the experiment design software is as follows 37 : where η 0 , η i , η ii , η ij , x i , k, and σ represent the constant term, the coefficient of the linear parameter, the coefficient of the quadratic parameter, the coefficients of the interaction parameters, the variables, the variables' number, and the residual related to the runs, respectively. Each variable in the model has a coefficient.…”

Section: Methodsmentioning

confidence: 99%

Optimization of thorium solvent extraction process from feed solution with Cyanex 272 by response surface methodology (RSM)

Khanramaki,

Keshtkar

2024

Sci Rep

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Due to the limited reserves of uranium, the abundance of thorium compared to it and other advantages, the development of the thorium fuel cycle is of interest in different countries. The optimization of thorium extraction from a feed solution produced by Saghand ore with bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex 272) on a laboratory scale was evaluated by response surface method. The operating variables include Cyanex 272 concentration of 0.001 to 0.2 mol/L, pH of 0 to 2, equilibrium time of 5 to 60 min and aqueous to organic phase ratio of 0.5 to 2.5 were conducted. The value of R2 = 0.9695 and an error of less than 4% indicate the validity of the model. Therefore, the model is in good agreement with the experimental results. It can be said that there are significant interactions between operational parameters, which vindicate different feedbacks of the system in different operational conditions. The results showed that the 4 mol/L sulfuric acid was a suitable agent for recovering thorium ions from the loaded organic phase. In optimum conditions, the thorium purity percentage and thorium stripping efficiency were obtained 98.99 and 94.12%, respectively.

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“…Then, the statistical analysis software Design Expert was used to design the experiments and optimize other effective process parameters (such as Cyanex 272 concentration, pH and phase ratio). The standard equation of the second order model in the experiment design software is as follows 37 :…”

Section: Experimental Designmentioning

confidence: 99%

Optimization of thorium solvent extraction process from feed solution with Cyanex 272 by surface response methodology (RSM)

Khanramaki,

Keshtkar

2024

Preprint

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Due to the limited reserves of uranium, the abundance of thorium compared to it and other advantages, the development of the thorium fuel cycle is of interest in different countries. The optimization of thorium extraction from a feed solution produced by Saghand ore with Cyanex 272 on a laboratory scale was evaluated by response surface method. The operating variables include Cyanex 272 concentration of 0.001 to 0.2 mol/L, pH of 0 to 2, equilibrium time of 5 to 60 min and aqueous to organic phase ratio of 0.5 to 2.5 were conducted. The results of the variance analysis of the fitted model revealed F = 35.35 and R2 = 0.9695. Based on the results, it can be said that the validated model shows an error of less than 4%. Therefore, the model is in good agreement with the experimental results. It can be said that there are significant interactions between operational parameters, which vindicate different feedbacks of the system in different operational conditions. The results showed that the 4 mol/L sulfuric acid was a suitable agent for recovering thorium ions from the loaded organic phase. In optimum conditions, the thorium purity percentage and thorium stripping efficiency were obtained 99.17 and 94.12%, respectively.

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Studies on effective interaction parameters in extraction of Pr and Nd using Aliquat 336 from NdFeB magnet-leaching solution: Multiple response optimizations by desirability function

Cited by 12 publications

References 45 publications

Eco‐Friendly Synthesis of Iron Nanoparticles Using Green Tea Extract: Characterization and Evaluation of Their Catalytic, Anti‐oxidant and Anti‐bacterial Potentials

Eco‐Friendly Synthesis of Iron Nanoparticles Using Green Tea Extract: Characterization and Evaluation of Their Catalytic, Anti‐oxidant and Anti‐bacterial Potentials

Optimization of thorium solvent extraction process from feed solution with Cyanex 272 by response surface methodology (RSM)

Optimization of thorium solvent extraction process from feed solution with Cyanex 272 by surface response methodology (RSM)

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