Distinctive IR-Spectroscopic Features of Functional Groups of Low-Grade Phosphorites After Microbiological and Acid Processing

  • Ilkhom Tagaev Navoi State Mining Institute, Navoi, Uzbekistan
  • Nodirjon Doniyarov
  • Anvar Asrorov Navoi State Mining Institute, Navoi, Uzbekistan
  • Islom Murodov Navoi State Mining Institute, Navoi, Uzbekistan
  • N.KH. Usanbaev Institute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
  • Uktam Temirov Institute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
Keywords: activated sludge, microflora, microorganisms, neutrophils, heterotrophs, aeration tanks


The article discusses the current problems of enrichment of low-grade phosphorites by the thermal method as well as the production of mineral fertilizers using various acids. An alternative biotechnological method for producing organomineral fertilizers using neutrophilic, heterotrophic microorganisms of activated sludge at a biochemical treatment station for municipal wastewater for the processing of low-grade phosphorites and the production of phosphorus-containing organomineral fertilizers is proposed.In this case, a natural acceleration of the processes of the phosphorus cycle in nature occurs, which does not pollute the environment. A comparative description of IR spectroscopic descriptions of the results of microbiological treatment and treatment with sulfuric and nitric acids showed distinctive characteristics of the appearance of functional groups, which showed the transfer of valuable phosphorus components during acid treatment to sediment and their irrevocable loss in the form of waste.The studies will serve the utilization of low-grade phosphorites unused in the production, the production of a new type of organomineral fertilizer using and recycling of human waste (in most countries, incinerated), will lead to a gradual improvement in the structural composition of soils.Human vital activity waste and low-grade phosphorites have zero cost, the applied technology of biochemical treatment of domestic wastewater is available in all major cities that can be used to enrich phosphorites with organic matter.


Doniyarov, N., A., Tagaev, I. A., Asrorov, A. A., & Murodov, I. N. (2019). IR spectroscopic appearance of low-grade phosphorite ores of the Central Kyzyl Kum after microflora treatment of activated sludge at a biochemical treatment station. Science Magazine Universum: Engineering, 5(62), 72-76.
Doniyarov, N. A., Tagaev, I. A., Murodov, I. N., & Asrorov, A. A. (2019). Peculiarities of the destruction of minerals of low-grade phosphorites of the Central Kyzyl Kum by neutrophilic heterotrophic microorganisms of activated sludge. Scientific-technical and production journal "Gorniy Vestnik of Uzbekistan, 3(78), 70-74.
Doniyarov, N. A., & Tagayev, I. A. (2018). Obtaining a new kind of organic fertilizer on the basis of low-grade phosphorite of Central Kyzylkum // RMZ - materials and geoenvironment. Ljubljana, Slovenia, 1-9. https://doi.org/10.2478/rmzmag-2018-0016
Fedyaeva, O. A., Reshetnikova, E. V., & Chachina, S. B. (2012). Studies of the chemical composition of spent activated sludge of Omsk Vodokanal OJSC. Proceedings of OmSTU. Department of Physical Chemistry. p. 8.
Filenko, I. A. (2019). Acid decomposition of natural phosphorites to produce various forms of complex fertilizers. Diss. for a degree of Ph.D. Ross.chem.-tech. them. D.I. Mendeleev. pp. 23-27.
French patent. Processing of materials containing phosphates /HillRobertOliver. CL G 01 at 25/01.-No. 2280584.-Publ. 27.02.76.
Methods of analysis of phosphate raw materials, phosphate and complex fertilizers, feed phosphates. In M. M. Vinnik, L. N. Erbanova, P. M. Zaitsev, L. A. Ionova and others (Eds.), M. Chemistry, p. 218.
Nakamoto, K. (1991). IR spectra and Raman spectra of inorganic and coordination compounds. M., WORLD, 536. https://doi.org/10.1002/0470027320.s4104
Orlov, E. A., Treschenko, N. N., Kopylev, B. A., Belchenko, G. V., & Pchelintsev, V. N. et al. (1976). On the effect of temperature and composition of the gas and liquid phases on the process of enrichment of Karatau phosphorites with sulfur dioxide. Sat. Leningrad Ave. Technological Institute Lensoviet, 5, 137-143.
Pozin, M. E., Zhiltsova, D. F., Nikondrov, I. S. The method of purification of natural phosphorus-containing raw materials from impurities of magnesium compounds. /Cl. С 05 В 9 / 00.- No. 283243.- Publ. 18.12.70.
Shayakubov, T. Sh., Ilyashenko, V. Ya., Boyko, B. C., Kudryashev, N. S., & Turanov, U. T. (1982). Paleogene phosphorites of Uzbekistan. Soviet geology, 7, 3-12.
Shayakubov, T. Sh., Mikhailov, A. S., Boyko, B. C., Kudryashevm, N. S., & Zhuravlevm, Yu. P. (1983). The Central Kyzyl-Kum phosphoriferous region and its prospects, Geol. methods of prospecting and exploration of deposits non-metal. useful fossils. Overview / VNII econ. miner. raw materials and geological exploration. works. - M.: VIEMS. p. 28.
Shilaev, V. P. (1986). Basics of mineral processing. M .: Nedra, pp. 247-255.
Smirnov, A.I. (1972). The material composition and conditions for the formation of the main types of phosphorites. - M.: Nedra. p.196.
Sultanov, B. E., Tursunova, Z. M., Namazov, Sh. S., Erkaev, A. U., & Beglov, B. M. (2002). The effect of the concentration of calcium nitrate solution on the degree of washing of the phosphorite concentrate of the Central Kyzyl Kum. Uzbek Chemical Chemistry, 4, 10-13.
The patent of Germany. Preparation of phosphate ores (for processing) / Wengeler Wilhelm, Volstein Friedrich, Hoffmann Egbert. Cl. C 01 at 25 / 22.-No. 2531519.-Publ.-20.01.77.
Treschenko, N. N., Kopylev, B. A., Belchenko, G. V., & Tkacheva, V. A. (1976). Interaction of an aqueous suspension of carbonated phosphorite with nitrogen oxides. Sat. tr Leningra. technol. Institute of them. Lensoviet, 5, 142-145.
US patent. Phosphate Ore Processing Process / PetersenAlfredW. Kl. 423-320, C 01 at 25 / 16.-No. 3717702.-Publ. 20.02.73.
Zharsky, M. M., & Novikov, G. I. (1988). Physical research methods in inorganic chemistry. - M.: Higher School. 1988. p. 270.