This study investigates the co-movements between Solactive Electric Vehicle and Future Mobility Index (EVFMI) multiple rare earth elements (REEs). We applied a TVP-VAR model bivariate wavelet coherence approach to capture both in time frequency domain considering short-, medium- long-term investment horizons. Using daily returns from 1 June 2012 4 2021, results of show that individual REEs EVFM...

In a context of overexploitation natural resources, circular economy and particularly the extraction resources from secondary sources are essential to sustain number key technologies including renewable energies. Among sources, bauxite residue contains critical elements rare earth (REEs) (712 mg/kg). We investigated use soft selective dissolution protocols at mild pH values (2–6) as an alternat...

Concern over the enrichment of agricultural runoff with phosphorus (P) from land applied livestock manures has prompted the development of manure amendments that minimize P solubility. In this study, we amended poultry, dairy, and swine manures with two rare earth chlorides, lanthanum chloride (LaCl(3).7H(2)O) and ytterbium chloride (YbCl(3).6H(2)O), to evaluate their effects on P solubility in...

Given that the supply of several rare earth elements (REEs) is sometimes limited, recycling REEs used in various advanced materials, such as Nd magnets, is important for realizing efficient use of REE resources. In the present work, the feasibility of using DNA for REE recovery and separation was examined, along with the identification of the binding site of REEs in DNA. In particular, a DNA-...

In last decades, Rare Earth Elements (REEs) have assumed a fundamental importance in the electrical and electronic (EE) industry because of increasing interest low-carbon smart technologies. The availability limited areas globe, complexity extraction processes high costs affecting their valorization negatively influence supply chain at such point to jeopardize future EE equipment offer. This is...

A new chelating resin, silica gel loaded with 1-phenyl-3-methyl-4-benzoylpyrazol-5-one (PMBP), was prepared and used for the preconcentration of trace amounts of rare earth elements (REEs) in water samples prior to their determination by inductively coupled plasma atomic emission spectrometry (ICP-AES). REEs (La, Eu, Yb and Y) were quantitatively retained on the column packed with modified sili...

Geochemical studies of rare earth elements (REEs) as well major and trace were conducted on the beach placer sands from Kanyakumari coastal region, a well-known high background natural radiation area (HBNRA). For first time, uranium isotope ratios (234U/238U 235U/238U) determined in study to investigate provenance leaching U sands. Inductively coupled plasma mass spectrometry was used for measu...

A review of the compositional features Tunisia, Algeria, and Morocco phosphorites is proposed in order to assess compare paleoenvironmental conditions that promoted deposit formation as well provide information about their economic perspective light growing worldwide demand. Since these deposits share a very similar chemical mineralogical composition, attention was focused on geochemistry rare ...

The extraction of rare earth elements (REEs) from nitric acid solution with a triphosphine trioxide (TPO) is presented. Performances of such a ligand in ionic liquids vs. a classical solvent (benzyl ether) are compared. TPO seems to be 10 to 100 times more efficient when it is dissolved in ionic media whatever the concentration of nitric acid involved. Mechanistic investigations reveal that cat...

The determination of trace rare-earth elements (REEs) can be used for the assessment of environmental pollution, and is of great significance to the study of toxicity and toxicology in animals and plants. N, N, N', N'-tetraoctyl diglycolamide (TODGA) is an environmental friendly extractant that is highly selective to REEs. In this study, an analytical method was developed for the simultaneous d...