Recovery and transport of thorium(IV) through polymer inclusion membrane with D2EHPA from nitric acid solutions

Research on membranes and their associated processes was initiated in 1970 at the University of Paris XII/IUT de Créteil, which became in 2010 the University Paris-Est Créteil (UPEC). This research initially focused on the development and applications of pervaporation membranes, then concerned the metrology of ion-exchange membranes, then expanded to dialysis processes using these membranes, and recently opened to composite membranes and their applications in production or purification processes. Both experimental and fundamental aspects have been developed in parallel. This evolution has been reinforced by an opening to the French and European industries, and to the international scene, especially to the Krasnodar Membrane Institute (Kuban State University—Russia) and to the Department of Chemistry, (Qassim University—Saudi Arabia). Here, we first presented the history of this research activity, then developed the main research axes carried out at UPEC over the 2012–2022 period; then, we gave the main results obtained, and finally, showed the cross contribution of the developed collaborations. We avoided a chronological presentation of these activities and grouped them by theme: composite membranes and ion-exchange membranes. For composite membranes, we have detailed three applications: highly selective lithium-ion extraction, bleach production, and water and industrial effluent treatments. For ion-exchange membranes, we focused on their characterization methods, their use in Neutralization Dialysis for brackish water demineralization, and their fouling and antifouling processes. It appears that the research activities on membranes within UPEC are very dynamic and fruitful, and benefit from scientific exchanges with our Russian partners, which contributed to the development of strong membrane activity on water treatment within Qassim University. Finally, four main perspectives of this research activity were given: the design of autonomous and energy self-sufficient processes, refinement of characterization by Electrochemical Scanning Microscopy, functional membrane separators, and green membrane preparation and use.

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“…of D2EHPA loading. This result approves the plasticizing effect of D2EHPA already noted in the literature [ 99 ].…”

Section: Main Results Obtained During the Period 2012–2022supporting

confidence: 91%

Research on Membranes and Their Associated Processes at the Université Paris-Est Créteil: Progress Report, Perspectives, and National and International Collaborations

et al. 2023

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“…Utilization of tungsten residue [1] Tungsten resources and potential extraction [3] Recovery of W(VI) from wolframite ore using new synthetic Schiff-based derivative [17] Extraction of sodium tungstate from tungsten ore [18] Progress in sustainable recycling and circular economy of tungsten carbide [19] Tungsten resources and potential extraction from mine waste [20] Thorium Recovery and transport of thorium (IV) through polymer inclusion membrane [9] Process for the separation of U(VI), Th(IV) from rare earth elements by using ionic liquid Cyphos IL 104. [11] Thorium removal, recovery, and recycling [12] Polymeric materials for rare earth element recovery [13] Highly efficient adsorbent to remove thorium ions [15] Impacts of uranium-and thorium-based fuel cycles with different recycle options [16] The interest in thorium is argued both because it is a material with huge potential for energy generation, including nuclear energy [31][32][33][34][35][36][37][38][39][40], but also because, although it is radioactive, it is the object of some domestic applications that capitalize on the resistance to high temperatures of thorium dioxide (lamps, shields, crucibles, and welding electrodes) [41] or its special refractive index (lenses, glasses, and high-resolution optoelectronic apparatus) [12].…”

Section: Tungstenmentioning

confidence: 99%

“…• The first stage is at the pH (6)(7)(8)(9)(10)(11)(12) in this space when a permeate, containing the soluble tungstate ion, and a concentrate, containing thorium dioxide and aluminum hydroxide, are obtained; • The second stage is when the concentrate is mixed with the pH 13 solution from the cathodic space, the aluminum is solubilized as aluminate, passing into the permeate, and thorium dioxide remains in the concentrate.…”

Section: Metallic Element or Membranementioning

confidence: 99%

“…The development of new technologies for the recovery of metals from urban waste requires solid arguments regarding the value of the separated metals or the negative impact on the environment if such metals are not separated and recycled [ 9 , 10 , 11 ]. A special case reported recently [ 12 ] shows that metals such thorium or tungsten that come from electric and electronic equipment or materials used in construction (refractory bricks and welding electrodes) can appear in urban waste [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, tungsten has been the focus of process engineers for its recovery from various residues through electrolytic processes and acid or basic solubilization processes [ 26 , 27 , 28 , 29 , 30 ]. On the other hand, thorium has been the focus of researchers in the field of membranes for concentration, separation or purification, especially when it comes from ores in which uranium or rare earths can also be found [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ] ( Table 1 ).…”

Section: Introductionmentioning

confidence: 99%

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Simultaneously Recovery of Thorium and Tungsten through Hybrid Electrolysis–Nanofiltration Processes

Man,

Albu,

Nechifor

et al. 2024

Toxics

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The recovery and recycling of metals that generate toxic ions in the environment is of particular importance, especially when these are tungsten and, in particular, thorium. The radioactive element thorium has unexpectedly accessible domestic applications (filaments of light bulbs and electronic tubes, welding electrodes, and working alloys containing aluminum and magnesium), which lead to its appearance in electrical and electronic waste from municipal waste management platforms. The current paper proposes the simultaneous recovery of waste containing tungsten and thorium from welding electrodes. Simultaneous recovery is achieved by applying a hybrid membrane electrolysis technology coupled with nanofiltration. An electrolysis cell with sulphonated polyether–ether–ketone membranes (sPEEK) and a nanofiltration module with chitosan–polypropylene membranes (C–PHF–M) are used to carry out the hybrid process. The analysis of welding electrodes led to a composition of W (tungsten) 89.4%; Th 7.1%; O2 2.5%; and Al 1.1%. Thus, the parameters of the electrolysis process were chosen according to the speciation of the three metals suggested by the superimposed Pourbaix diagrams. At a constant potential of 20.0 V and an electrolysis current of 1.0 A, the pH is varied and the possible composition of the solution in the anodic workspace is analyzed. Favorable conditions for both electrolysis and nanofiltration were obtained at pH from 6 to 9, when the soluble tungstate ion, the aluminum hydroxide, and solid thorium dioxide were formed. Through the first nanofiltration, the tungstate ion is obtained in the permeate, and thorium dioxide and aluminum hydroxide in the concentrate. By adding a pH 13 solution over the two precipitates, the aluminum is solubilized as sodium aluminate, which will be found after the second nanofiltration in the permeate, with the thorium dioxide remaining integrally (within an error of ±0.1 ppm) on the C–PHF–M membrane.

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Separation of copper and nickel from synthetic wastewater by polymer inclusion membrane containing di(2-ethylhexyl)phosphoric acid

Ncib

Chibani²,

Barhoumi³

et al. 2022

Polym. Bull.

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Recovery and transport of thorium(IV) through polymer inclusion membrane with D2EHPA from nitric acid solutions

Cited by 14 publications

References 79 publications

Research on Membranes and Their Associated Processes at the Université Paris-Est Créteil: Progress Report, Perspectives, and National and International Collaborations

Research on Membranes and Their Associated Processes at the Université Paris-Est Créteil: Progress Report, Perspectives, and National and International Collaborations

Simultaneously Recovery of Thorium and Tungsten through Hybrid Electrolysis–Nanofiltration Processes

Separation of copper and nickel from synthetic wastewater by polymer inclusion membrane containing di(2-ethylhexyl)phosphoric acid

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