Recovery of W(VI) from Wolframite Ore Using New Synthetic Schiff Base Derivative

Abstract

A new synthetic material, namely, (3-(((4-((5-(((S)-hydroxyhydrophosphoryl)oxy)-2-nitrobenzylidene) amino) phenyl) imino) methyl)-4-nitrophenyl hydrogen (R)-phosphonate)), was subjected to a quaternary ammonium salt and named (HNAP/QA). Several characterizations, such as FTIR spectrometry, 1H-NMR analysis, 13C-NMR analysis, 31P-NMR Analysis, TGA analysis, and GC-MS analysis, were performed to ensure its felicitous preparation. HNAP/QA is capable of the selective adsorption of W(VI) ions from its solutions and from its rock leachate. The optimum factors controlling the adsorption of W(VI) ions on the new adsorbent were studied in detail. Furthermore, kinetics and thermodynamics were studied. The adsorption reaction fits the Langmuir model. The sorption process of the W(VI) ions is spontaneous due to the negative value of ∆G° calculated for all temperatures, while the positive value of ∆H° proves that the adsorption of the W(VI) ions adsorption on HNAP/QA is endothermic. The positive value of ∆S° suggests that the adsorption occurs randomly. Ultimately, the recovery of W(IV) from wolframite ore was conducted successfully.

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

“…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].…”

“…Both thorium and tungsten are obtained from ores by established processes such as hydrometallurgical treatment [ 17 , 18 , 19 ], separation [ 20 , 21 , 22 , 23 , 24 ], and treatment of alloys [ 25 ]. 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 ].…”

“…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 ).…”

Eco-Friendly Recycling of Lithium Batteries for Extraction of High-Purity Metals

“…Additionally, whereas solvent extraction is restricted to a specific set of solvents and chemicals, adsorption can be used to extract a large range of substances from a variety of solutions. Overall, adsorption is a more practical and efficient technique than solvent extraction for many purposes [ 26 , 27 ].…”

The Accumulation of Metal Ions by a Soy Protein–Inorganic Composite Material

“…In addition, these metal ions may adversely affect the human body [12,13]. Therefore, the accumulation and removal of metal ions from industrial wastewater, river water, and ground water is a worldwide agenda [14]. The accumulation and removal of metal ions is mainly carried out using activated carbon and alumina.…”