Pavlovska, Gorica and Stafilov, Trajche and Čundeva, Katarina (1998) Comparison of hexamethylenedithiocarbamate and tetramethylenedithiocarbamate as flotation reagents for the concentration of zinc. Fresenius' Journal of Analytical Chemistry, 361. pp. 213-216.
Full text not available from this repository.Abstract
A procedure for zinc flotation separation from fresh water prior to its determination by atomic absorption spectrometry (AAS) has been developed. Hexamethyleneammonium hexamethylenedithiocarbamate (HMA-HMDTC) added to the first precipitate collector of hydrated Fe(III) oxide (Fe2O3· xH2O) gives the second precipitate collector of Fe(HMDTC)3. After addition of a surfactant, the precipitate of collectors is separated from the water phase by a stream of air bubbles, dissolved by strong acid and the solution then tested by AAS. The experimental parameters (amount of collector used, pH, ionic strength, type of foaming reagent, ζ potential, induction time etc.) affecting the flotation efficiency were optimized. At a pH of 6, Zn is separated quantitatively (98.5%) by addition of 5 mg Fe(III) and 3 mL 0.1 mol/L HMA-HMDTC to the sample. Results are compared with those obtained by ammonium tetramethylenedithiocarbamate.
| Item Type: | Article |
|---|---|
| Subjects: | Scientific Fields (Frascati) > Engineering and Technology > Chemical engineering Scientific Fields (Frascati) > Natural sciences > Chemical sciences Scientific Fields (Frascati) > Engineering and Technology > Environmental engineering |
| Divisions: | Faculty of Technology and Technical Sciences |
| Depositing User: | Prof. d-r. Gorica Pavlovska |
| Date Deposited: | 31 Mar 2023 11:42 |
| Last Modified: | 31 Mar 2023 11:42 |
| URI: | https://eprints.uklo.edu.mk/id/eprint/7896 |
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