Extraction of silver from nitric acid medium by certain quinoline derivatives
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A. M. I. Ali
Summary
Three new quinoline derivatives were synthesised and characterized. These compounds were found to be insoluble in water and different acids such as HNO3, HCl until 6 M and soluble in NaOH at 2 M concentration. Chloroform was found to be the suitable solvent for quinoline derivatives. The extraction of Ag from nitric acid by 8-methyl-2,4-dithiol-quinoline (1H) (MDTQ), 4-chloro-8-methyl-quinoline (1H) thione (CMTQ) and 3-formyl-4-hydroxy N-methyl 2(H) quinoline (FHMQ) has been investigated.
The effects of shaking time, nitric acid concentration, metal ion concentration and the concentration of extractant were studied. The results showed that the distribution ratio of Ag decreased with increase in the nitric acid and metal concentration, and increased by increasing the extractant concentration. It was found that an equilibrium time of 10 min was required to reach equilibrium. The results showed that (MDTQ) is very selective for the separation of Ag.
© Oldenbourg Wissenschaftsverlag, München
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Artikel in diesem Heft
- Charge and mass distribution in 7Li induced fission of 232Th
- Direct evidence for enhanced inner-sphere chloro complexation of Eu(III) and Cm(III) in anion exchange resin phase studied by time-resolved laser-induced fluorescence spectroscopy
- Plutonium separation by solvent extraction for the determination by photon electron rejecting alpha liquid spectrometry
- Influence of aggregation on the extraction of trivalent lanthanide and actinide cations by purified Cyanex 272, Cyanex 301, and Cyanex 302
- Characterization of a humic gel synthesized from an activated epoxy silica gel
- Extraction of silver from nitric acid medium by certain quinoline derivatives
- Electrochemical separation and purification of yttrium-86
- Radiobromination of closo-dodecaborate anion. Aspects of labelling chemistry in aqueous solution using Chloramine-T
- Metal-ion speciation in blood plasma incorporating the water-soluble polymer, polyethyleneimine functionalised with methylenephosphonate groups, in therapeutic radiopharmaceuticals
