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Devoting to the jubilee of K.S. Sanakulov, General Director of "Navoi Mining and Metallurgical Company" JSC
Название Analyzing how ions tend to form in the aqueous phase of the slurry and how they affect the bacterial oxidation of sulphide minerals
DOI 10.17580/tsm.2022.05.01
Автор Sanakulov K. S., Mukhiddinov B. F., Sharipov S. Sh., Vapoev Kh. M.
Информация об авторе

Navoi Mining and Metallurgical Company, Joint Stock Company, Navoi, Republic of Uzbekistan:
K. S. Sanakulov, Chairperson of the Board – General Director, Doctor of Technical Sciences, Professor


Navoi State Mining and Technology University, Navoi, Republic of Uzbekistan:
B. F. Mukhiddinov, Professor at the Department of Chemical Technology, Doctor of Chemical Sciences, e-mail: muhiddinov.b@mail.ru
S. Sh. Sharipov, Associate Professor at the Department of Chemical Technology, Candidate of Technical Sciences, e-mail: element_2993@mail.ru
Kh. M. Vapoev, Head of the Department of Chemical Technology, Doctor of Technical Sciences, Associate Professor


This paper describes the results of a study that relied on chemical and physico-chemical analysis techniques to examine the qualitative and quantitative composition of anions during bacterial oxidation of flotation concentrate. It was found that bacterial oxidation of flotation concentrate results in the production of anions of sulphate, thiosulphate, arsenate, selenate, nitrate, chloride and amino acids (cysteine, threonine and arginine). Anions of amino acids, as well as thiosulphate and selenate anions form chelates with precious metals, which get carried away with the biocake wash to the neutralization stage. The findings helped determine how the concentration of gold ions changes at different process stages. This research aims to analyze the behavior of anions during bacterial oxidation of sulphide minerals. The research material included samples of processed sulphide ores taken from active bacterial oxidation reactors at 12 different points (classifier overflow, flotation concentrate from the thickener, exit from reactors 1, 2, 3, 4, 5, 6; solids of counterflow wash-1 and wash-3, top of the sorption cyanidation tank, cyanidation tailings). The concentrations of amino acids were determined during sample analysis. Three amino acids were mainly detected in the solution: cysteine, threonine and arginine. These amino acids are capable of binding with gold ions and forming chelates. Under the effect of cyanides, cysteine and arginine were found to decompose while threonine remained intact.

Ключевые слова Anion, bacterial oxidation, mineral, growth medium, microorganism, Bacillus megaterium, Acidithiobacillus ferrooxidans
Библиографический список

1. Shketova L. E. Looking at the processing of sulphide carbonaceous gold ore with the help of biogeotechnology: Extended abstract of dissertation Candidate of Technical Sciences. Irkutsk, 2013.
2. Mukhiddinov B. F., Sanakulov K., Sharipov S. Sh., Aliev T. B. Sulphuric acid generated during bacterial oxidation of flotation concentrate: Thermodynamic and mineralogical characterization of the process. Gornyy vestnik Uzbekistana. 2020. No. 3. pp. 105–108.
3. Sanakulov K. S., Ergashev U. A. Theory and practice of streamlining the recovery of gold from Kyzylkum refractory gold ores. Tashkent : GP “NIIMR”, 2014. 296 p.
4. Sharipov S. Sh., Mukhiddinov B. F. Bioleaching of sulphide flotation concentrates. Universum: Tekhnicheskie nauki. 2020. No. 12. pp. 97–100. DOI: 10.32743/UniTech.2020.81.12-4.97-100
5. Sovmen V. K., Guskov V. N., Belyi A. V. et al. Processing of gold ores by means of bacterial oxidation in the Far North environment. Novosibirsk : Nauka, 2007. 144 p.
6. Gudkov S. S., Shketova L. E., Mikhaylova A. N. Bacterial leaching of refractory ores and concentrates. Gornyi Zhurnal. 2011. No. 4. pp. 27–28.
7. Kreshkov A. P. Fundamentals of analytical chemistry. Theoretical basis. Qualitative analysis. Book 1. 4th revised edition. Moscow : Khimiya, 1976. 472 p.
8. Kreshkov A. P. Fundamentals of analytical chemistry. Book 2. Theoretical basis. Quantitative analysis. Moscow : Khimiya, 1971. 456 p.
9. Kh. M. Sovmen, R. Ya. Aslanukov. A method for processing of refractory gold-arsenic ores and concentrates. Patent RF, No. 2234544. Applied: 25.03.2003. Published: 20.08.2004.
10. Sosipatorov A. I. Examining and developing a flotation process for carbonaceous gold ores that involves the use of carbonaceous matter depressant: Extended abstract of dissertation Candidate of Technical Sciences. Irkutsk, 2019.
11. Rawlings D. E., Johnson D. B. Biomining. Springer, 2006. 17 p.
12. Arita A., Costa M. Environmental agents and epigenetics. Handbook of epigenetics, 2011.
13. Kotova I. B., Netrusov A. I. Microbiology: A textbook. Moscow : Akademiya, 2009. 352 p.
14. Lebed A. B., Naboychenko S. S., Shunin V. A. Production of selenium and tellurium at Uralelektromed. Learner’s guide. Yekaterinburg : Izdatelstvo Uralskogo universiteta, 2015. 112 p.
15. Germanov N. I. Microbiology. Moscow : Prosveshchenie, 1969. 227 p.
16. Loka Bharathi P. A. Sulfur Cycle. Encyclopedia of Ecology. 2008. pp. 3424–3431. DOI: 10.1016/B978-008045405-4.00761-8.
17. Vorobiev A. E., Karginov K. G., Shchelkin A. A., Chekushina T. V. Practical application of thiosulphate leaching of precious metals from natural materials. Mining Informational and Analytical Bulletin. 2003. No. 7. Available at: https://cyberleninka.ru/article/n/praktika-primeneniya-tiosulfatnogo-vyschelachivaniya-blagorodnyh-metallov-iz-prirodnyh-materillov (Accessed: 13.01.2022).
18. Boduen A. Ya., Fokina S. B., Petrov G. V., Serebryakov M. A. Advanced hydrometallurgical technology for refractory gold ore processing. Sovremennye problemy nauki i obrazovaniya. 2014. No. 6. Available at: http://www.science-education.ru/ru/article/view?id=15619 (Accessed: 07.03.2021).
19. Sharipov S. Sh., Sanakulov K. S., Mukhiddinov B. F., Vapoev Kh. Formation of amino acids in the process of bacterial oxidation of flotation concentrate and their effect on the extraction of precious metals. Journal Reports of the Academy of Sciences of the Republic of Uzbekistan. 2020. No. 5. pp. 48–54.
20. Graddon D. P., Munday L. Some properties of copper(II) α-amino-acid chelates: A study of solubilities, visible region and infra-red spectra in relation to crystal structure. Journal of Inorganic and Nuclear Chemistry. 1961. Vol. 23, Iss. 3-4. pp. 231–244.
21. Yamada K. et al. The microbial production of amino acids. Kodansha, Tokyo/Wiley, New York, 1972.
22. Epshteyn N. A. Validation of chromatographic techniques: Monitoring the peak frequency and the specific techniques relying on diode-array detectors: A review. Razrabotka i registraciâ lekarstvennyh sredstv. 2020. Vol. 9, No. 3. pp. 129–136. DOI: 10.33380/2305-2066-2020-9-3-129-136/.
23. Styskin E. L., Itsikson L. B., Braude E. V. Practical high-performance liquid chromatography. Moscow : Khimiya, 1986. 213 p.
24. Yashin Ya. I., Yashin E. Ya., Yashin A. Ya. Gas chromatography. Moscow : Translit, 2009.

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