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Extractants for rare earth metals [PDF]

open access: yesChimica Techno Acta, 2016
The separation of trivalent rare earth metals is perhaps the most serious challenge associated with a closed fuel cycle. The choice of ligand as extractant, which must be selective and efficient in conditions of high radiation environment, plays an ...
V. V. Kurysheva   +2 more
doaj   +2 more sources

Extractable and Non-Extractable Antioxidants [PDF]

open access: yesMolecules, 2019
In addition to documented scientific interest on antioxidant phytochemicals (plant secondary metabolites) [...]
Alessandra Durazzo, Massimo Lucarini
openaire   +6 more sources

Changes in land use practices influence soil sulfur fractions and their bioavailability

open access: yesFrontiers in Sustainable Food Systems, 2023
Changes in land use practices may affect the distribution of soil sulfur (S) fractions and their bioavailability. Therefore, this study was undertaken to assess the influence of different land use changes on the distribution of soil S fractions and their
Dhaneshwar Padhan   +2 more
doaj   +1 more source

Sequential Recovery of Critical Metals from Leached Liquor of Processed Spent Lithium-Ion Batteries

open access: yesBatteries, 2023
The processing and extraction of critical metals from black mass is important to battery recycling. Separation and recovery of critical metals (Co, Ni, Li, and Mn) from other metal impurities must yield purified metal salts, while avoiding substantial ...
Ayorinde Emmanuel Ajiboye   +1 more
doaj   +1 more source

Recent Advances in Muconic Acid Extraction Process

open access: yesApplied Sciences, 2023
Due to its potential use in the production of new functional resins, bio-plastics, food additives, agrochemicals, and pharmaceuticals, muconic acid (MA), a high value-added bio-product with reactive dicarboxylic groups and conjugated double bonds, has ...
Alexandra Cristina Blaga   +2 more
doaj   +1 more source

A Comparative Study of Four Extractants on the Extraction of Available Selenium in Vegetable and Orchard Soils

open access: yesYankuang ceshi, 2020
BACKGROUND Available selenium is an important index to evaluate the supply capacity of selenium from soil to plants. However, there is no national standard method to test available selenium in China. The selection of extractants is very important for the
XIE Wei   +5 more
doaj   +1 more source

Current status of vanadium resources and research progress on vanadium extraction with organic phosphorus extractants

open access: yes工程科学学报, 2021
Vanadium is an important additive that is used widely in modern industries, as well as an important strategic metal. Vanadium metal elements, compounds, and alloy materials have unique and valuable properties, which have enabled great advances in the ...
Ke-bo PENG   +7 more
doaj   +1 more source

Determination of the antioxidant additive “Ionol” in transformer oil by gas chromatographic method [PDF]

open access: yesE3S Web of Conferences, 2021
Transformer oil is widely used in power oil-filled electrical equipment, which is an insulating and diagnostic medium. During the operation of power transformers, its operational and dielectric properties deteriorate.
Duy Hung Nguyen   +2 more
doaj   +1 more source

Linear 2-Ethylhexyl Imidophosphoric Esters as Effective Rare-Earth Element Extractants

open access: yesApplied Sciences, 2020
Imidophosphoric organic esters containing phosphoryl groups are potential polydentate ligands and promising extractants of rare-earth elements. For their preparation, a monophosphazene salt [PCl3=N−PCl3]+[PCl6]− and short phosphazene ...
Nikolay S. Bredov   +6 more
doaj   +1 more source

Structure Investigation of La, Y, and Nd Complexes in Solvent Extraction Process with Liquid Phosphine Oxide, Phosphinic Acid, and Amine Extractants

open access: yesMetals, 2023
The main challenge in separating REEs through hydrometallurgical processes is their chemical similarities. Despite the literature widely presenting the possibilities for organic extractants, there is a lack of evaluation of the structures formed between ...
Amilton Barbosa Botelho Junior   +3 more
doaj   +1 more source

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