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-...

This paper explores the possibility of using lixiviates generated by sulphide mining in Iberian Pyrite Belt (IPB) as a source economic interest elements, estimating available metal reserves and discussing gains that would result from recovery this potential critical raw materials other elements. For purpose, 33 have been evaluated. Results show annual contributions more than 7000 t/year Mg, 470...

The aim of this study was to evaluate the toxicity of two rare earth elements (REE), cerium and lanthanum on sea urchin embryos and sperm. Sea urchin (Paracentrotus lividus) embryos were reared for 72 h in Ce(IV)- or La(III)-contaminated seawater at concentrations ranging from 10(-8) to 10(-5) M. Cleaving embryos (5h post-fertilization) were submitted to cytogenetic analysis, scoring mitotic ac...

Following their fall to Earth, meteorites experience weathering. In this systematic study, we evaluate the trace element composition of ordinary chondrites from Antarctic cold desert, and Atacama (Chile) Lut (Iran) hot deserts, with an emphasis on rare earth elements (REE). Our data confirms that terrestrial weathering in deserts changes (Sr, Ba, REE, Hf, Th, U) concentrations. However, effects...

Most rare earth element deposits form from magmatic fluids, but there have also been discoveries of heavy rare earth element (HREE)– enriched hydrothermal xenotime deposits within sedimentary basins. As xenotime is notoriously insoluble, the question arises as to whether these lesser-known deposits form at typical basin temperatures or by influx of much hotter magmatic-hydrothermal fluids. The ...

Abstract The accelerated pace of transition to green energy technologies has led increased demand for rare-earth elements (REEs). Fluorocarbonates from the bastnäsite [REE(CO 3 )F]—synchysite [CaREE(CO ) 2 F] group are abundant in nature and dominant REE minerals >10 billion ton Olympic Dam Cu–U–Au–Ag deposit, South Australia. Intergrowths synchysite slabs at nanometer micron scales rule rat...