WebJun 2, 2024 · The stock solutions of D2EHPA organic phase were prepared by diluting D2EHPA in kerosene at a predetermined weight to volume ratio. Aqueous and organic phases are assumed to be immiscible, so no volume variation is considered in the model. ... The slope for lithium shows the association of 0.72 mol of extractant with 1 mol of lithium. WebJan 29, 2024 · In order to investigate the D2EHPA effect, a series of experiments were performed under conditions of constant concentration of TBP (1.2 mol L –1) and D2EHPA (RH) of 5 to 20% (vol). As seen in Fig. 5 , the copper extraction increased as D2EHPA concentration increased from 5 to 15% (vol) for both conditions (in the presence and …
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WebApr 5, 2024 · Modeling of the mass transfer process may be useful in understanding of the phenomenon, it can help in scale-up of system and also it can minimize the experimental trials of further experiments. ... show that the presence of two carriers in a suitable ratio (0.9 mol/dm 3 D2EHPA and 0.15 mol/dm 3) causes a 2.5 fold increase process efficiency ... WebMar 20, 2024 · n v and n D2EHPA are the molecular weight of vanadium and D2EHPA, respectively, η is the content of mixed extractant in SIR, α is the content of D2EHPA in the mixed extractant. Results and Discussion. Adsorption capacity and effective utilization rate of D2EHPA. The adsorption capacity of different SIRs for V(IV) after 20 h at pH=2.0 is … iron house productions miramichi
Metals Free Full-Text Kinetics Study of Solvent and Solid-Phase ...
WebMay 23, 2024 · The kinetic features of solvent and solid-phase extraction of yttrium and iron (III) from simulated and industrial phosphoric acid solutions are revealed. Di-2-ethylhexylphosphoric acid (D2EHPA) was used as a liquid extractant, and D2EHPA-containing Levextrel resin—a co-polymerization product of styrene and … WebExcess molar volumes were determined for binary solutions of D2EHPA with toluene, cyclohexane, heptane in the temperature range of (288.15 – 308.15) K and hexane at (288.15, and 298.15) K using ... WebApr 12, 2024 · D2EHPA was chosen as the extractant for metal ions, and D2EHPA and sulfuric acid were added to alter the viscosity of the aqueous and oil phases, considering the practical use of recycling spent lithium-ion batteries in the future. ... new coccin (C 20 H 11 N 2 Na 3 O 10 S 3; molecular weight: 604.47, Fujifilm Wako Pure Chemicals) was used … port of portland police jobs