Recycling rare earth elements (REEs) used in advanced materials such as Nd magnets is important for the efficient use of REE resources when the supply of several REEs is limited. In this work, the feasibility of using salmon milt for REE recovery and separation was examined, along with the identification of the binding site of REEs in salmon milt. Results showed that (i) salmon milt has a suffi...

Ion-exchange (IX) resins incorporating single functional groups (sulfonic or amino-phosphonic) and two phosphonic) were evaluated for selective recovery of Rare Earth Elements (REEs) from acidic mine waters (AMW). The composition AMW solution, complexing properties the group, acidity investigated as key parameters concentration separation REEs transition elements (TEs). Fe has to be removed ena...

Recently, methanotrophic and methylotrophic bacteria were found to utilize rare earth elements (REEs). To monitor the REE content in culture media of these bacteria, we have developed a rapid screening method using the Arsenazo III (AS III) dye for spectrophotometric REE detection in the low μM (0.1 to 10 μM) range. We designed this assay to follow LaIII and EuIII depletion from the culture med...

biglar permo-triassic bauxite deposit is located in ~15 km northwest of abgarm, southwest of ghazvin province, west of central iran. it consists of 8 stratiform and discontinuous bauxite lenses lying along the contact of ruteh (permian) and elika (triassic) carbonate formations. petrographically, the bauxite ores exhibit collomorphic-fluidal, pseudo-breccia, pseudo-porphyritic, panidio-morphic-...

This study developed a methodology to analyze trace rare earth elements (REEs) in geological materials by capillary electrophoresis (CE). Changed from dilute HNO3 into a water medium by heating, REE ions are detectable at approximately 2 ng mL(-1). In the presence of coexisting elements from geological samples, REE separations were carried out. After sample fusion with Na2O2 and interference se...

Most rare earth elements (REEs) are critical materials of extreme prominence. Because their criticality, convalescence into metal from oxide (REO) and recycling end-of-life essential for the proficient use safeguard natural resources. With pyrometallurgical approaches using potential versus partial oxidation pressure (E-pO2-) diagrams, conditions making neodymium established by which REOs disso...

The characterization and leaching mechanism of REEs from phosphogypsum (PG) in HCl was studied in-depth. contained the PG were 208 ppm, which Y, La, Ce, Nd four most abundant elements. modes occurrence rare earth elements (REEs) quantified using sequential chemical extraction (SCE) method. Among five REE species, metal oxide form accounted for largest proportion, followed by residual, organic m...

Major ions, stable isotopes, and trace elements, including rare earth elements (REEs), are used as natural tracers in the qualitative assessment of potential water sources lakes rivers upper Yana River basin, between Verkhoyansk Chersky Ranges, during late summer period. Three distinct regions were sampled, a dominant source each region was qualitatively inferred from chemistry data. The REE di...

Rare earth elements (REEs) and Y, or REYs, are commonly used as geochemical proxies for water chemistry, history of the continental crust provenance studies. At continent-ocean interface, estuarine geochemistry REYs is thought to be driven by large-scale removal dissolved fraction. Consequently, contributions river-borne marine budget assumed represent a minor fraction total flux. Here, we repo...