Solvent Extraction of Zr and Hf from HCl by Aliquat 336 using a Flow-Type Extraction Apparatus Toward Online Chemical Studies of Element 104, Rutherfordium

2020 ◽  
Vol 38 (3) ◽  
pp. 318-327
Author(s):  
Yoshitaka Kasamatsu ◽  
Narumi Kondo ◽  
Kouhei Nakamura ◽  
Yuki Kuboki ◽  
Hidemi Ninomiya ◽  
...  
Minerals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 388
Author(s):  
Silvester Jürjo ◽  
Liis Siinor ◽  
Carolin Siimenson ◽  
Päärn Paiste ◽  
Enn Lust

Estonian phosphorite ore contains trace amounts of rare earth elements (REEs), many other d-metals, and some radioactive elements. Rare earth elements, Mo, V, etc. might be economically exploitable, while some radioactive and toxic elements should be removed before any other downstream processing for environmental and nutritional safety reasons. All untreated hazardous elements remain in landfilled waste in much higher concentration than they occur naturally. To resolve this problem U, Th, and Tl were removed from phosphorite ore at first using liquid extraction. In the next step, REE were isolated from raffinate. Nitrated Aliquat 336 (A336[NO3]) and Bis(2-ethylhexyl) Phosphate (D2EHPA) were used in liquid extraction for comparison. An improved method for exclusive separation of radioactive elements and REEs from phosphorite ore in 2-steps has been developed, exploiting liquid extraction at different pH values.


2011 ◽  
Vol 108 (1-2) ◽  
pp. 93-99 ◽  
Author(s):  
R.K. Mishra ◽  
P.C. Rout ◽  
K. Sarangi ◽  
K.C. Nathsarma

1978 ◽  
Vol 13 (5) ◽  
pp. 429-437 ◽  
Author(s):  
Curtis McDonald ◽  
Mohamed M. Mahayni ◽  
Marwan Kanjo

2016 ◽  
Vol 18 (14) ◽  
pp. 4116-4127 ◽  
Author(s):  
Clio Deferm ◽  
Michiel Van de Voorde ◽  
Jan Luyten ◽  
Harald Oosterhof ◽  
Jan Fransaer ◽  
...  

The ionic liquids Cyphos IL 101 and Aliquat 336 are environmentally friendly extractants for purification of indium. Precipitation stripping with NaOH was used to recover indium after extraction.


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