scholarly journals Stable immobilized amine sorbents for heavy metal and REE removal from industrial wastewaters

2020 ◽  
Vol 6 (5) ◽  
pp. 1286-1299 ◽  
Author(s):  
Walter Christopher Wilfong ◽  
Brian W. Kail ◽  
Qiuming Wang ◽  
Fan Shi ◽  
Greg Shipley ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Toxic Metals ◽  
Environmental Water ◽  
Water Systems ◽  
Industrial Wastewaters ◽  
Amine Sorbents

Stable and immobilized amine sorbents can simultaneously remove/recover cationic and oxyanionic toxic metals plus valuable rare earth elements from industrial and mining effluents prior to discharging into environmental water systems.

scholarly journals Amine Sorbents for Selective Recovery of Heavy Rare‐Earth Elements (Dysprosium, Ytterbium) from Aqueous Solution

ChemPlusChem ◽  
2020 ◽  
Vol 85 (1) ◽  
pp. 130-136 ◽  
Author(s):  
Qiuming Wang ◽  
Brian W. Kail ◽  
Walter C. Wilfong ◽  
Fan Shi ◽  
Thomas J. Tarka ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Heavy Rare Earth ◽  
Selective Recovery ◽  
Heavy Rare Earth Elements ◽  
Amine Sorbents

Rare-earth elements and yttrium distributions in mangrove coastal water systems: The western Gulf of Thailand

2005 ◽  
Vol 21 (4) ◽  
pp. 255-277 ◽  
Author(s):  
P. Censi ◽  
S. E. Spoto ◽  
G. Nardone ◽  
F. Saiano ◽  
R. Punturo ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Coastal Water ◽  
Water Systems ◽  
Gulf Of Thailand

scholarly journals Determination of rare-earth elements in environmental water using chelating resin disk separation/ICP-MS.

2002 ◽  
Vol 51 (7) ◽  
pp. 539-544 ◽  
Author(s):  
Yuichi TAKAKU ◽  
Yuka KUDO ◽  
Jyoji KIMURA ◽  
Takuma HAYASHI ◽  
Ikuko OTA ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Environmental Water ◽  
Chelating Resin ◽  
Icp Ms

scholarly journals Voltammetric and Spectroscopic Determination of Rare Earth Elements in Fresh and Surface Water Samples

Environments ◽  
2018 ◽  
Vol 5 (10) ◽  
pp. 112 ◽  
Author(s):  
Martin Makombe ◽  
Charlton van der Horst ◽  
Bongiwe Silwana ◽  
Emmanuel Iwuoha ◽  
Vernon Somerset
Keyword(s):  
Rare Earth ◽  
Detection Limit ◽  
Rare Earth Elements ◽  
Water Samples ◽  
Spectroscopic Method ◽  
Environmental Water ◽  
Green Technology ◽  
Environmental Water Samples ◽  
Icp Oes

The increasing demand for rare earth elements in green technology, electronic components, petroleum refining, and agricultural activities has resulted in their scattering and accumulation in the environment. This study determined cerium, lanthanum and praseodymium in environmental water samples with the help of adsorptive differential pulse stripping voltammetry (AdDPSV) and inductive coupled plasma-optical emission spectroscopy (ICP-OES). A comparison of the results of these two analytical techniques was also made. The accuracy and precision of the methods were evaluated by spiking water samples with a known amount of REEs. The detection limit obtained for the stripping analysis was 0.10 μg/L for Ce(III), and 2.10 μg/L for combined La(III) and Pr(III). The spectroscopic method of determination by ICP-OES was applied to the same samples to evaluate the effectiveness of the voltammetry procedure. The ICP-OES detection limit obtained was 2.45, 3.12 and 3.90 μg/L for Ce(III), La(III) and Pr(III), respectively. The results obtained from the two techniques showed low detection limits in voltammetry; the ICP-OES method achieved better simultaneous analysis. This sensor has been successfully applied for the determination of cerium, lanthanum, and praseodymium in environmental water samples, offering good results.

scholarly journals Accumulation and Distribution of Rare Earth Elements (REEs) and Non-REEs With Vetiver Grass in The Abandoned Ion-Absorbed Rare Earth Mine

2021 ◽  
Author(s):  
Luhua Kang ◽  
Zhenfeng Cai ◽  
Tiantian Li ◽  
Ping Li ◽  
Liying Wang
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Toxic Metals ◽  
Organic Fertilizer ◽  
Vetiver Grass ◽  
Absorption Process ◽  
Mining Soil ◽  
Preferential Accumulation ◽  
Soil Distribution ◽  
Rare Earth Mine

Abstract Overexploitation of rare earth elements (REEs) has caused serious desertification and environmental pollution, and ecological restoration of mines has attracted increasing national attention. In this paper, experiments involved land plowing, organic fertilizer broadcasting and vetiver cultivation were carried out to repair abandoned ion-absorbed rare earth mines (REM). Toxic metals content and pH in mining soil, distribution and transportation of toxic metals in the soil – vetiver grass system were investigated in detail.Results revealed that the abandoned REM soil was weakly acidic (pH=4.09) and rich in various toxic metals composed of REEs (La, Ce, Nd, Y, Gd, Dy) of 657.57mg/kg and Non-REEs (Pb, Cu, Se, As, Cd) of 109.98mg/kg. The distribution pattern in vetiver grass illustrated that toxic metals accumulation was mainly concentrated in the roots instead of shoot, and then the cumulative concentration of REEs in roots were much greater than that of Non-REEs. Furthermore, vetiver grass exhibited preferential accumulation of Cd, Se and REEs during the absorption process (from soil to root) and preferential accumulation of Pb, Cu and As during the translocation process (from root to leaf). The adsorption behavior of toxic metals by vetiver was confirmed due to these observed irregular particles in the scanning electron microscopy.

Serum concentration of toxic metals and rare earth elements in children and adolescent

2019 ◽  
Vol 30 (6) ◽  
pp. 696-712 ◽  
Author(s):  
Laura Gaman ◽  
Corina Elena Delia ◽  
Octavio P. Luzardo ◽  
Manuel Zumbado ◽  
Mihaela Badea ◽  
...  
Keyword(s):  
Rare Earth ◽  
Serum Concentration ◽  
Rare Earth Elements ◽  
Toxic Metals ◽  
Children And Adolescent
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