scholarly journals Analyzing Solutions High in Total Dissolved Solids for Rare Earth Elements (REEs) Using Cation Exchange and Online Pre-Concentration with the seaFAST2 Unit; NETL-TRS-7-2017; NETL Technical Report Series; U.S. Department of Energy, National Energy Technology Laboratory: Albany, OR, 2017; p 32

2017 ◽  
Author(s):  
J. Yang ◽  
M. Torres ◽  
C. Verba ◽  
A. Hakala
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Cation Exchange ◽  
Total Dissolved Solids ◽  
Department Of Energy ◽  
Energy Technology ◽  
Dissolved Solids ◽  
Technical Report Series ◽  
Technical Report

Fractionation of rare earth elements within bone mineral: A natural cation exchange system

2011 ◽  
Vol 310 (1-2) ◽  
pp. 124-132 ◽  
Author(s):  
Clive N. Trueman ◽  
László Kocsis ◽  
Martin R. Palmer ◽  
Chris Dewdney
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Cation Exchange ◽  
Bone Mineral ◽  
Exchange System

scholarly journals An Updated Review of Toxicity Effect of the Rare Earth Elements (REEs) on Aquatic Organisms

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1663
Author(s):  
Nemi Malhotra ◽  
Hua-Shu Hsu ◽  
Sung-Tzu Liang ◽  
Marri Jmelou M. Roldan ◽  
Jiann-Shing Lee ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Chemical Elements ◽  
Life Forms ◽  
Department Of Energy ◽  
Earth’S Crust ◽  
Aquatic Biota ◽  
Aquatic Life ◽  
Toxicity Effect ◽  
Earth's Crust

Rare earth elements (REEs) or “technology metals” were coined by the U.S. Department of Energy, a group of seventeen elements found in the Earth’s crust. These chemical elements are vital and irreplaceable to the world of technology owing to their unique physical, chemical, and light-emitting properties, all of which are beneficial in modern healthcare, telecommunication, and defense. Rare earth elements are relatively abundant in Earth’s crust, with critical qualities to the device performance. The reuse and recycling of rare earth elements through different technologies can minimize impacts on the environment; however, there is insufficient data about their biological, bioaccumulation, and health effects. The increasing usage of rare earth elements has raised concern about environmental toxicity, which may further cause harmful effects on human health. The study aims to review the toxicity analysis of these rare earth elements concerning aquatic biota, considering it to be the sensitive indicator of the environment. Based on the limited reports of REE effects, the review highlights the need for more detailed studies on the hormetic effects of REEs. Aquatic biota is a cheap, robust, and efficient platform to study REEs’ toxicity, mobility of REEs, and biomagnification in water bodies. REEs’ diverse effects on aquatic life forms have been observed due to the lack of safety limits and extensive use in the various sectors. In accordance with the available data, we have put in efforts to compile all the relevant research results in this paper related to the topic “toxicity effect of REEs on aquatic life”.

Sorption extraction of rare-earth elements on sulfonic cation-exchange resin KU-2-8 from nitrate solutions of loparite concentrate development

2021 ◽  
Vol 22 (7) ◽  
pp. 312-317
Author(s):  
Dmytro Yelatontsev ◽  
◽  
Anatoly Mukhachev ◽  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Cation Exchange ◽  
Exchange Resin ◽  
Raw Materials ◽  
Cation Exchange Resin ◽  
Sodium Content ◽  
Study Results ◽  
Loparite Concentrate ◽  
Nitrate Solutions

The experimental-industrial study results of the process of sorption of rare-earth elements on sulfonic cation-exchange resin KU-2-8 from nitrate solutions of loparite concentrate development are presented. Values of different obtained elements are discussed. Different changes in processes are described. Reprocessing loparine raw materials in the close cycle without hydrochloric and sulfuric acid, and excess of normative sodium content in productional concentrate is possible. Keywords: ionite, sorption, loparite concentrate, rare-earth element, thorium.

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