scholarly journals Ultrasonic extraction of several cations with dilute nitric acid solutions from soils.

1982 ◽  
Vol 31 (11) ◽  
pp. E409-E412 ◽  
Author(s):  
Yuzo TAMARI ◽  
Yukiharu INOUE ◽  
Haruo TSUJI ◽  
Yuzuru KUSAKA
Keyword(s):  
Nitric Acid ◽  
Ultrasonic Extraction ◽  
Acid Solutions ◽  
Nitric Acid Solutions ◽  
Dilute Nitric Acid

Enhanced extraction of thorium(IV) and uranium(VI) with 1-phenyl-3-methyl-4-pivaloyl-5-pyrazolone in the presence of various neutral organophosphorus extractants

2004 ◽  
Vol 92 (1) ◽  
Author(s):  
R. Meera ◽  
R. Luxmi Varma ◽  
M. L. P. Reddy
Keyword(s):  
Nitric Acid ◽  
Metal Ions ◽  
Trioctylphosphine Oxide ◽  
Acid Solutions ◽  
Nitric Acid Solutions ◽  
Presence And Absence ◽  
Organophosphorus Extractants ◽  
Dilute Nitric Acid

SummaryThis paper describes the results of the investigations carried out on the extraction of thorium(IV) and uranium(VI) from dilute nitric acid solutions into chloroform with 1-phenyl-3-methyl-4-pivaloyl-5-pyrazolone (HPMPP) in the presence and absence of various neutral organophosphorus extractants, tributylphosphate (TBP), octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) and trioctylphosphine oxide (TOPO). The results demonstrated that these metal ions were extracted into chloroform as Th(PMPP)

scholarly journals Selective Adsorption Studies of Ytterbium on Sand from Aqueous Solution

1995 ◽  
Vol 12 (4) ◽  
pp. 317-321 ◽  
Author(s):  
M.A. Rauf ◽  
S.M. Hasany ◽  
I. Ellahi
Keyword(s):  
Aqueous Solution ◽  
Nitric Acid ◽  
Metal Ions ◽  
Selective Adsorption ◽  
Acid Solutions ◽  
Adsorption Studies ◽  
Nitric Acid Solutions ◽  
Dilute Nitric Acid

Adsorption studies of ytterbium on sand from dilute nitric acid solutions have been studied in relation to the properties of both adsorbate and adsorbent. The conditions for maximum adsorption were optimized. The effect of added cations, anions and other metal ions were also investigated. Ytterbium was found to separate well from solutions containing CoII, EuIII and ZnII in appreciable amounts under given conditions.

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