organic phase वाक्य
उदाहरण वाक्य
मोबाइल
- This is because it is not able to enter the tributyl phosphate / hydrocarbon organic phase used in the first liquid-liquid extraction cycle of the PUREX process.
- In the extraction step, selected species that are present in the donor solution are transported from the donor aqueous solution to the organic phase where a reaction ensues.
- It is recovered by treatment with aqueous ferrous reduces the plutonium to the + 3 oxidation state in the aqueous solution, leaving the uranium in the organic phase.
- If solubility in the organic phase is not an issue, a selectivity coefficient is equal to the ratio of the stability constants of the TBP complexes of two metal ions.
- Because the organic phase has a low dielectric constant the species with no electrical charge will be the most likely one to pass from the aqueous phase to the organic phase.
- Because the organic phase has a low dielectric constant the species with no electrical charge will be the most likely one to pass from the aqueous phase to the organic phase.
- The two stages of extraction are used to improve the purity of the actinide product, the organic phase used for the first extraction will suffer a far greater dose of radiation.
- The base within the water phase neutralizes the acid, generated in the reaction, while the starting materials and product remain in the organic phase, often dichloromethane or diethyl ether.
- In the multistage processes, the aqueous raffinate from one extraction unit is fed to the next unit as the aqueous feed, while the organic phase is moved in the opposite direction.
- It is normal to then back extract the loaded organic phase to create a " medium active " liquor which contains mostly uranium and plutonium with only small traces of fission products.
- Furthermore, the solute S can react with the extractant to form a complex ES . This complexation of the solute with the extractant shifts the overall extraction equilibrium further towards the organic phase.
- This is referred to as capillary electroextraction, or cEE . In this set up, shown in figure 3, a capillary containing aqueous phase is placed in a vial of organic phase and surrounded by a hallow cathode.
- In 1984 Pashely described the smear layer as being composed of two phases; an organic phase, composed of collagen residues and glycosaminoglycans from extracellular matrix of pulp cells, which acts as a matrix for an inorganic phase.
- Early experiments with 256 Lr therefore used rapid solvent extraction, with the chelating agent thenoyltrifluoroacetone ( TTA ) dissolved in methyl isobutyl ketone ( MIBK ) as the organic phase, and with the aqueous phase being buffered acetate solutions.
- Another possible way to separate the trivalent actinides is via solvent extraction chromatography using bis-( 2-ethylhexyl ) phosphoric acid ( abbreviated as HDEHP ) as the stationary organic phase and nitric acid as the mobile aqueous phase.
- When the nitric acid concentration is high the extraction into the organic phase is favoured, and when the nitric acid concentration is low the extraction is reversed ( the organic phase is " stripped " of the metal ).
- When the nitric acid concentration is high the extraction into the organic phase is favoured, and when the nitric acid concentration is low the extraction is reversed ( the organic phase is " stripped " of the metal ).
- This medium active aqueous mixture is then extracted again by tributyl phosphate / hydrocarbon to form a new organic phase, the metal bearing organic phase is then stripped of the metals to form an aqueous mixture of only uranium and plutonium.
- This medium active aqueous mixture is then extracted again by tributyl phosphate / hydrocarbon to form a new organic phase, the metal bearing organic phase is then stripped of the metals to form an aqueous mixture of only uranium and plutonium.
- If the organic layer was to acquire too much metal then a solid metal complex might form, or more worryingly in a nuclear process the potential for a criticality accident if the fissile metal concentration in the organic phase becomes too high.
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