Red mud as secondary source for critical raw materials - purification of rare earth elements by liquid/liquid extraction

2017 ◽  
Vol 92 (10) ◽  
pp. 2683-2690 ◽  
Author(s):  
Éva Ujaczki ◽  
Yannick Zimmermann ◽  
Christoph Gasser ◽  
Mónika Molnár ◽  
Viktória Feigl ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Red Mud ◽  
Raw Materials ◽  
Liquid Extraction ◽  
Secondary Source ◽  
Liquid Liquid Extraction ◽  
Critical Raw Materials

scholarly journals The significance of energy consumption in environmental impact of rare earth elements recovery from tailings and mining waste

2019 ◽  
Vol 108 ◽  
pp. 02011
Author(s):  
Karolina Kossakowska ◽  
Katarzyna Grzesik
Keyword(s):  
Rare Earth ◽  
Environmental Impact ◽  
Rare Earth Elements ◽  
Energy Use ◽  
Raw Materials ◽  
Electricity Production ◽  
The European Union ◽  
The Eu ◽  
Lca Results ◽  
Critical Raw Materials

Rare Earth Elements (REEs) are identified as critical raw materials for the European Union economy. REEs are not currently produced in the EU, while there are several sources not properly addressed. Within the ENVIREE project tailings from New Kankberg (Sweden) and Covas (Portugal) were identified as rich in REEs and chosen for recovery processing. The Life Cycle Assessment (LCA) methodology was used to evaluate the environmental impact of REEs recovery. The aim of this study is the detailed analysis of several scenarios with different electricity production schemes of REE recovery. The study discusses the share of energy use in the overall impact on the environment, taking into account diversification in the electricity production structure among EU countries. The energy use is a significant contributor to the overall environmental impact of studied cases. Its share in the total environmental burden is reaching up to 47%. The results show that applying the average electricity scheme production for Europe may lead to biased LCA results. For the accurate LCA results the local production schemes of energy for certain countries should be chosen.

scholarly journals A microfluidic study of synergic liquid–liquid extraction of rare earth elements

2020 ◽  
Vol 22 (10) ◽  
pp. 5449-5462 ◽  
Author(s):  
Asmae El Maangar ◽  
Johannes Theisen ◽  
Christophe Penisson ◽  
Thomas Zemb ◽  
Jean-Christophe P. Gabriel
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Microfluidic Device ◽  
Complex Mixture ◽  
Liquid Extraction ◽  
Free Energies ◽  
X Ray ◽  
Free Energies Of Transfer ◽  
Liquid Liquid Extraction

A membrane based liquid–liquid extraction microfluidic device coupled with X-ray fluorescence enables the first quantification of free energies of transfer dependence for a complex mixture of rare earth elements and iron using synergic extractants.

Liquid-liquid Extraction of Rare Earth Elements Using Systems that are More Environmentally Friendly: Advances, Challenges and Perspectives

2021 ◽  
pp. 120064
Author(s):  
Heyder Pereira Neves ◽  
Gabriel Max Dias Ferreira ◽  
Guilherme Max Dias Ferreira ◽  
Leandro Rodrigues de Lemos ◽  
Guilherme Dias Rodrigues ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Environmentally Friendly ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction

scholarly journals Separation and Recycling for Rare Earth Elements by Homogeneous Liquid-Liquid Extraction (HoLLE) Using a pH-Responsive Fluorine-Based Surfactant

Metals ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 1543-1552 ◽  
Author(s):  
Shotaro Saito ◽  
Osamu Ohno ◽  
Shukuro Igarashi ◽  
Takeshi Kato ◽  
Hitoshi Yamaguchi
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Liquid Extraction ◽  
Ph Responsive ◽  
Homogeneous Liquid ◽  
Liquid Liquid Extraction
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