Exploring salting-out phenomena in air-assisted solvent extraction of Cu DOI
Soroush Rahmati, Ali Ahmadi, Roshanak Adavodi

et al.

Separation Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 12

Published: Dec. 26, 2024

Air-assisted solvent extraction (AASX) has been introduced as an alternative method with a high potential for recovering metals from dilute solutions in alignment sustainable development goals. This research investigates the effect of salting out using KCl, NaCl, CaCl2, NaNO3, and Na2SO4 on efficiency AASX process (Cu recovery organic-phase recycling). study uses thermodynamic coefficient bubble size values to interpret relationship between results ions present aqueous phase (type concentration electrolytes). It was observed that up inhibition increases distribution while decreasing coalescence. The trend anion effects (from highest lowest) copper recycling determined NO3−>SO42−>Cl− SO42− > Cl− NO3−, respectively. also found bubble-specific surface area, retention time fluids column, proportion uncoated organic play significant roles this process. emphasizes establishing extracting containing barrier anions cations various industries.

Language: Английский

Solvent extraction and trace analysis of as (III) in alloys, biological, and environmental samples by spectrophotometry and ICP-MS DOI Creative Commons
Chandramauly Sharma, Kuldeep Sharma, Pranav Trivedi

et al.

Discover Chemistry., Journal Year: 2025, Volume and Issue: 2(1)

Published: March 8, 2025

Language: Английский

Citations

1
Optimization of rare earth magnet recovery processes using oxalic acid in precipitation stripping: Insights from experimental investigation and statistical analysis DOI Creative Commons
Soroush Rahmati, Ionela Birloaga, Pietro Romano

et al.

Heliyon, Journal Year: 2024, Volume and Issue: 10(14), P. e34811 - e34811

Published: July 1, 2024

Recycling the valuable metals found in spent permanent magnets (REPMs) poses a significant global challenge for future. This study examines efficiency of back extraction rare earth elements (REEs) by oxalic acid solution from di-(2-ethylhexyl) phosphoric (D2EHPA) recycling REPMs. To evaluate this process, several experiments were carried out using designed BOX-Behnken methodology to investigate effects various operational and chemical parameters, including stripping loaded organic phase volume ratio (in range 1.0-2.0), concentration (ranging 0.25 0.75 M), stirring rate (ranged between 150 350 rpm), time 15 45 min) on REEs recovery purity final production. Analysis variance was applied rigorously examine results statistically. The showed that more than 85 % light 80 heavy can be recovered under optimal conditions. Moreover, product contained 43.5 approximately 0.1 iron. experiment as reagent demonstrated ∼57 ∼4 recovery. Additionally, recyclability its effective reuse up four cycles. underscores progress selective through relatively straightforward process consuming mild reagents.

Language: Английский

Citations

4
Evaluation of the Mechanisms of Rare Earth Elements Extraction from Citrate Solutions in the Recycling of NdFeB Magnets DOI Creative Commons
Soroush Rahmati, Roshanak Adavodi, Pietro Romano

et al.

Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 106788 - 106788

Published: Jan. 1, 2025

Language: Английский

Citations

0
Innovative Methods for Intensifying the Processing of Zinc Clinker: Synergy of Microwave Treatment and Ultrasonic Leaching DOI Creative Commons
Bagdaulet Kenzhaliyev, Tatiana Surkova, Ainur Berkinbayeva

et al.

Metals, Journal Year: 2025, Volume and Issue: 15(3), P. 246 - 246

Published: Feb. 25, 2025

This study presents an innovative approach to processing refractory zinc-bearing clinker through the synergistic application of microwave thermal treatment and ultrasonic-assisted leaching. Microwave irradiation induces phase transformations in clinker, improving its reactivity facilitating subsequent zinc dissolution, while ultrasonic cavitation enhances mass transfer by disrupting passivation layers. Key process parameters, including acid concentration, temperature, pulp density, leaching time, were systematically investigated using response surface methodology (RSM) central composite design (CCD). The results demonstrate that optimized conditions led a significant increase recovery from materials.

Language: Английский

Citations

0
Copper (II) Distributions Between Buffered Aqueous Phases and Organic Phases of 4, 4´-(1E,1E´)-1,1´-(Ethane-1,2-Diylbis (Azan-1-Yl-1ylidene) Bis (5-Methyl-2-Phenyl-2,3-Dihydro-1h-Pyrazol-3-Ol) (H2BuEtP) in Chloroform DOI Creative Commons

Oguarabau Benson,

Jackson Godwin,

Shalom Udochukwu Okanezi

et al.

International Journal of Latest Technology in Engineering Management & Applied Science, Journal Year: 2025, Volume and Issue: 14(2), P. 87 - 99

Published: March 10, 2025

Abstract: The distribution of Cu2+ between buffered aqueous phases and chloroform solutions 4,4´-(1E,1E´)-1,1´-(ethane-1,2-diylbis(azan-1-yl1ylidene))bis(5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-ol) (H2BuEtP) alone in the presence 1-(3-hydroxy-5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl) butan-1-one(HBuP) was investigated using solvent-solvent extraction. 200 mgL-1 used for study with an equilibration time 60 minutes. Concentration after determined AAS calculated by difference Copper concentration organic phases, ratios(D) percentage extractions(%E) were determined. Slope analysis from plots log D against buffers pHs, ligands concentrations metal to propose reaction equations extracted complexes as Cu(HBuEtP.X)(o) ligand Cu(HBuEtP.BuP)(o) HBuP. extraction constant Kex, obtained H2BuEtP (-5.11±0.7) greater than that H2BuEtP/HBuP (-12.94±1.26) which indicated HBuP did not exert any synergic effects Cu2+, even though partition coefficient 2.03 ± 0.81 > 0.97 0.62 H2BuEtP. Comparing results those other studies, showed carbon chain length structurally related on ions is dependent particular ion. a better extractant Ni2+ Fe2+ only Pb2+, UO2+ Cd2+ based Kex values.

Language: Английский

Citations

0
Revolutionizing thorium capture: g-C3N4 electrodes for enhanced thorium electrosorption DOI Creative Commons

Nabiha Mohd Yussuf,

Aznan Fazli Ismail, Muhammad Yasir

et al.

Journal of Saudi Chemical Society, Journal Year: 2025, Volume and Issue: 29(1)

Published: March 11, 2025

Language: Английский

Citations

0
Investigation of Phase Transformations in Technogenic Raw Materials Under Microwave Treatment for Enhanced Zinc Leaching DOI Open Access
Bagdaulet Kenzhaliyev, Ainur Berkinbayeva, Zhazira Baltabekova

et al.

Processes, Journal Year: 2025, Volume and Issue: 13(4), P. 1099 - 1099

Published: April 6, 2025

This study presents the results of an investigation into effectiveness microwave (MW) treatment (1) as a preconditioning method for technogenic raw materials (2) to enhance zinc (3) leaching (4) efficiency. Selective dielectric heating facilitates phase transformations (5), converting sphalerite (ZnS) oxide (ZnO), which exhibits significantly improved acid leachability. The response surface methodology (RSM) was utilized evaluate critical operational variables, encompassing sulfuric concentration, period, slurry density, and thermal conditions. obtained confirm potential MW in hydrometallurgical processes, offering sustainable energy-efficient alternative processing materials.

Language: Английский

Citations

0
Selective Removal of Copper from Nickel–Copper Leach Solution by Electrolysis Cells with High Convection DOI Creative Commons
Levent Kartal

Metals, Journal Year: 2025, Volume and Issue: 15(4), P. 432 - 432

Published: April 12, 2025

In this study, the selective separation of copper ions (Cu2+) from leaching solutions containing both Cu2+ and nickel (Ni2+) was investigated using electrolysis cells with high convection (Chemelec). Firstly, electrochemical behavior only single Cu2+, Ni2+, Ni2+ cyclic voltammetry (CV). reduction observed at −0.15 V in that contained either simply or a Cu2+-Ni2+ combination, whereas oxidation happened 0.17 step. The CV analysis Ni2+-containing solution pH 1 revealed not reduced. Potentiostatic experiments were conducted cathode potentials −0.3 V, −0.4 −0.5 V. Increasing potential to enhanced recovery 84% 94%. current efficiency remained above 90% across all three during 3 h experiments. At extending experiment time 5 resulted exceeding 99%, while declined 80%. products analyzed X-ray diffraction (XRD), revealing main phase consisted metallic copper.

Language: Английский

Citations

0
Sustainable indium recovery from e-waste and industrial effluents: Innovations and opportunities integrating membrane separation processes DOI
Fabrício Eduardo Bortot Coelho, Victor Rezende Moreira,

D. Majuste

et al.

Desalination, Journal Year: 2025, Volume and Issue: unknown, P. 118900 - 118900

Published: April 1, 2025

Language: Английский

Citations

0
Effect of microwave roasting in the leaching of the transition metals Ni, Fe, and Co from the low-grade nickel laterite DOI Open Access
La Agusu, Waode Sukmawati Arsyad, I Nyoman Sudiana

et al.

Journal of Physics Conference Series, Journal Year: 2025, Volume and Issue: 2980(1), P. 012021 - 012021

Published: April 1, 2025

Abstract In many cases, low-grade nickel laterite ores with (Ni) content of 1.2% or less have been left as land disposal at the mining areas. We are looking for an alternative, more environmentally friendly method to process this waste in a hydrometallurgical scheme. This study investigates effectiveness microwave-assisted recovery transition metals—specifically (Ni), iron (Fe), and cobalt (Co)—from (Ni<1.5%). The methodology involves roasting sulfuric acid-nickel mixture leaching it room temperature. results reveal that microwave significantly enhances metal recovery, achieving remarkable rates 98.6% nickel, 96.9% iron, 99.0% cobalt, even under low powers 100 W, 180 300 only 5 minutes heating time. A solid-to-solution ratio 1.2 g/mL was maintained throughout process. While higher power did lead slight decrease efficiency due temperatures exceeding boiling point acid, overall remained highly efficient. mineralogical analysis indicated is primarily composed dolomite, calcite, goethite, nepouite, vermiculite, cristobalite, highlighting complexity material. Additionally, extending duration lower can reduce acid consumption, contributing environmental sustainability extraction compared conventional techniques. These findings underscore not potential technology mineral processing but also promote sustainable practices valuable metals from ores.

Language: Английский

Citations

0