Authors: K.S. Votolin, S.I. Zherebtsov, K.M. Shpakodraev, N.V. Malyshenko, Z.R.1 Ismagilov, O.A. Isachkova

Title of the article: Reducing the carbon footprint of the coal industry by processing brown coal into humic and lipid substances for agriculture and industry

Year: 2023, Issue: 2, Pages: 36-47

Branch of knowledge: 2.6.12. Chemical technology of fuel and high-energy substances

Index UDK: 665.7.032.56; 662.73; 547.992.2

DOI: 10.26730/1999-4125-2023-2-36-47

Abstract: Currently, brown coal is mainly used as a low-calorie solid fuel in small-scale power generation and boiler houses and makes a significant contribution to the emission of carbon dioxide and other harmful components into the atmosphere. In order to reduce the carbon footprint, it is necessary to look for alternative technologies for the use of these coals, implemented without carbon dioxide emissions. One of these technologies is the extraction of humic substances for use in agriculture and in various industries. We have developed methods for isolating humic and lipid substances from brown coals of the Tisulskoye and Tyulganskoye deposits. An increased yield of the final product was achieved in comparison with standard methods: for humic acids by 52.5%, for bitumen by 225%. The initial coals, isolated humic substances and bitumens were characterized by technical and elemental analysis. A number of biologically active individual compounds were identified as part of bitumen by GC/MS method. The results of testing the biological activity of a mixture of saponifiable bitumen resins and humic substances on wheat seeds of the Iren variety are presented. It has been established that this mixture exhibits high biological activity in relation to wheat seeds. Field tests of enlarged samples of humic substances showed a high yield increase when processing Iren spring wheat and Gala potatoes. The prospects for the use of products of deep processing of brown and substandard coals in various industries are given.

Key words: brown coal humic substances humic acids bitumen mountain wax extraction resin biological activity phytoactivity index

Receiving date: 26.01.2023

Approval date: 10.05.2023

Publication date: 15.06.2023

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