The Study of the Properties of Humic Acids Synthesized From Brown Coal of the Kuznetsk and the Kumuskuduk Deposits

The article is devoted to the synthesis and comparative analysis of humic acids derived from brown coal from the Kuznetsk and Kumuskuduk deposits. Using advanced analytical techniques, including infrared (IR) spectroscopy, elemental analysis, and thermogravimetric analysis, we evaluated the physicochemical properties of humic acids from these two geological sources. The research revealed significant differences in chemical composition, functional groups, and thermal stability, attributed to the distinct geological formation conditions of each deposit. In particular, variations in carboxyl and hydroxyl group content were observed, impacting the sorption and complexation capabilities of the humic acids. This comparative study highlights the potential of humic acids from both deposits for applications in environmental remediation, agriculture, and wastewater treatment. The findings provide new insights into the influence of geological factors on the structural characteristics and reactivity of humic acids, thus expanding the possibilities for their practical use and further technological development.