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Biosorption and desorption of lanthanum(III) and neodymium(III) in fixed-bed columns with Sargassum sp.: Perspectives for separation of rare earth metals
(Wiley-Blackwell, 2012-05-01)
Rare earth (RE) metals are essentials for the manufacturing of high-technology products. The separation of RE is complex and expensive; biosorption is an alternative to conventional processes. This work focuses on the ...
Bioavailability of trace metals and rare earth elements (REE) from the tropical soils of a coal mining area
(Elsevier B.V., 2020-05-15)
In order to assess the environmental risks related to mining activities in Southern Brazil, the transfer of trace metals and rare earth elements (REE) from soils to soybeans was evaluated in a U-rich area associated with ...
Influence of metallic nanoparticles on electric-dipole and magnetic-dipole transitions of Eu(3+) doped germanate glasses
(AMER INST PHYSICS, 2010)
Luminescence properties of Eu(3+) doped germanate glasses containing either silver or gold nanoparticles (NPs) were investigated for excitation at 405 nm. Enhanced emissions and luminescence quenching of the Eu(3+) transitions ...
Rare-earth complexes with anti-inflammatory drug sulindac: Synthesis, characterization, spectroscopic and in vitro biological studies
(2021-10-01)
New rare-earth complexes with the general formula [LnIII(sul)3]∙nH2O, where sul− is the anti-inflammatory drug sulindac and Ln3+ = Ce3+, Pr3+, Gd3+, Tb3+, and Ho3+, were synthesized, characterized, and had their cytotoxic ...
Spent NiMH batteries-The role of selective precipitation in the recovery of valuable metals
(ELSEVIER SCIENCE BV, 2009)
The production of electronic equipment, such as computers and cell phones, and, consequently, batteries, has increased dramatically. One of the types of batteries whose production and consumption has increased in recent ...
Heavy metal oxide glass-ceramics containing luminescent gallium-garnets single crystals for photonic applications
(2021-05-25)
Glass-ceramics containing rare earth gallium garnets were obtained using glass compositions as reactional medium. This work reports on the synthesis, and structural, morphological, and optical characterizations of Er3+ and ...
Photoluminescence and nonlinear optical phenomena in plasmonic random media - A review of recent works
(2016-01-01)
Photoluminescence properties and nonlinear optical response of metal-dielectric nanocomposites (MDNCs) - germanate glasses, bio-cellulose membranes and colloids containing either silver (Ag) or gold (Au) nanoparticles (NPs) ...
Cyclohexane oxidation over rare earth exchanged zeolite Y
(Elsevier Science BvAmsterdamHolanda, 1998)
Investigation on extraction rate of lanthanides with extractant-impregnated microcapsule
(ELSEVIER, 2008-05-15)
Extraction of lanthanum, samarium and erbium into a microcapsule containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (EHPNA) is studied. The extraction kinetic model used to predict uptake curves is based on the ...