Results 171 to 180 of about 1,377 (224)

Eco-friendly removal of strontium from produced water of an oilfield in western Iran using biosurfactant derived from Malva sylvestris leaves. [PDF]

Sci Rep
Talebi M, Rezaei A, Rafiei Y.
europepmc   +1 more source

Summary of the Research Progress on Advanced Engineering, Processes, and Process Parameters of Rare Earth Green Metallurgy. [PDF]

Materials (Basel)
Li Y, Zhang T, Dou Z, Xie W, Lan C, Li G.   +5 more
europepmc   +1 more source

Reductive stripping in vacuum of Fe(III) from D2EHPA [PDF]

Hydrometallurgy, 2000
The iron stripping from di(-2-ethylhexyl)phosphoric acid (D2EHPA) constitutes a problem in hydrometallurgical processes: whereas Fe(III) is easily extracted along with other elements such as zinc or cadmium, it is hard to strip it from the organic phase.
LUPI, Carla, PILONE, Daniela
openaire   +3 more sources

A novel D2EHPA-based synergistic extraction system for the recovery of chromium (III) [PDF]

Chemical Engineering Journal, 2016
A synergistic solvent extraction method for recovering chromium (III) was proposed using the mixed extractant consisting of di (2-ethylhexyl) phosphoric acid (D2EHPA) and isooctanol.
Qiang Guo
exaly   +2 more sources

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Some physico-chemical properties of D2EHPA

Hydrometallurgy, 2003
R K Biswas
exaly   +2 more sources

Separation of D2EHPA and M2EHPA

Hydrometallurgy, 1988
Abstract D2EHPA and M2EHPA were separated using selective precipitation and solvent extraction. When the precipitation technique was employed. M2EHPA was precipitated as its barium salt from the mixture, followed by regeneration of the alkyl phosphoric acids by contacting each component separately with acid.
S. Acharya, A. Nayak
openaire   +1 more source

Kinetics of VO2+ extraction by D2EHPA

Hydrometallurgy, 2003
Abstract The kinetics of the forward extraction of VO2+ from sulphate–acetate medium by di-2-ethylhexylphosphoric acid (D2EHPA) in toluene has been investigated with Hahn and Lewis cell techniques using both (rate/area) or, pseudo-rate constant (q) and flux (F) methods for data treatment.
R.K. Biswas, M.G.K. Mondal
openaire   +1 more source

A rapid titrimetric determination of D2EHPA and M2EHPA

Hydrometallurgy, 1993
Abstract The use of impure D2EHPA in solvent extraction of metal ions leads to many process problems. Analysis of the quality of D2EHPA before use is warranted. The titrimetric estimation of D2EHPA containing M2EHPA of various samples in 50% (v/v) aqueous ethanol was studied using visual colour indicators. Bromophenol blue, methyl orange, methyl red,
Y. Ramachandra Rao, Sridhara Acharya
openaire   +1 more source

Kinetics of Mn(II) extraction by D2EHPA

Hydrometallurgy, 2003
Abstract The kinetics of forward extraction of Mn(II) from 0.1 M SO42− medium by di-(2-ethyl hexyl) phosphoric acid (D2EHPA) solution in kerosene have been investigated by the Lewis (L.C.) and Hahn cell (H.C.) techniques. For kinetic data treatment, both pseudo-rate constant, ‘q’ or ‘rate/area’ and flux, ‘F’ methods have been applied.
R.K Biswas, M.G.K Mondal
openaire   +1 more source

Extraction of macro- and microamounts of lanthanides by D2EHPA

Journal of Radioanalytical and Nuclear Chemistry Articles, 1990
The effect of macroconcentration (Ma) lanthanide extraction on the microcomponent (Mi) extraction by D2EHPA was investigated. The investigation corroborated that the macrocomponent suppresses the microcomponent extraction. The extractability of Mi decreases with increasing Ma concentration and with increasing proton lanthanide number in ...
V. Jedináková, V. Bílek, Z. Dvořák, B. Doležal   +3 more
openaire   +1 more source