Synthesis and Properties of Humic Acids Derived from  Brown coal of Kuznetsk and Kumuskuduk Deposits

A.P. Nauanova; T.O. Khamitova; N. Parmanbek; S. Tyanakh; R.Z. Kasenov; S.Zh. Davrenbekov; A.N. Bolatbay; U.B. Toleuov

doi:10.18321/cpc23(3)345-357

Authors

A.P. Nauanova S. Seifullin Kazakh Agro Technical Research University, Zhenis ave., 62, Astana, Kazakhstan
T.O. Khamitova S. Seifullin Kazakh Agro Technical Research University, Zhenis ave., 62, Astana, Kazakhstan
N. Parmanbek The Institute of Nuclear Physics, Ibragimov st., 1, Almaty, Kazakhstan
S. Tyanakh E.A. Buketov Karaganda University, University st., 28, Karaganda, Kazakhstan
R.Z. Kasenov E.A. Buketov Karaganda University, University st., 28, Karaganda, Kazakhstan
S.Zh. Davrenbekov E.A. Buketov Karaganda University, University st., 28, Karaganda, Kazakhstan
A.N. Bolatbay E.A. Buketov Karaganda University, University st., 28, Karaganda, Kazakhstan
U.B. Toleuov E.A. Buketov Karaganda University, University st., 28, Karaganda, Kazakhstan

DOI:

https://doi.org/10.18321/cpc23(3)345-357

Keywords:

brown coal, humic acids, Kumuskuduk deposit, Kuznetsk deposit, functional groups, infrared spectroscopy, elemental analysis, ash content, reactivity

Abstract

This article presents the synthesis and comparative characterization of humic acids extracted from brown coal deposits of Kuznetsk and Kumuskuduk in Kazakhstan. Advanced analytical techniques, including infrared (IR) spectroscopy, elemental analysis, and thermogravimetric/differential scanning calorimetry (TGA/DSC), were employed to investigate the physicochemical and structural properties of the humic acids derived from these two distinct geological sources. The results revealed significant differences in elemental composition, particularly in carbon, oxygen, and hydrogen content, which were directly related to the geological and environmental conditions under which the coals were formed. Variations in the concentration of carboxyl and hydroxyl functional groups were also identified, influencing the sorption capacity, acidity, and complexation behavior of the humic acids. Thermal analysis demonstrated differing levels of thermal stability and decomposition patterns, reflecting the structural heterogeneity of the samples. This study highlights the importance of geological origin in determining the functional potential of humic substances and supports their application in environmental remediation, agriculture, and water purification.

References

(1) S. Tyanakh, M.I. Baikenov, F.Y. Ma, et al. Kinetic of oil sludge thermolysis process in presence of nickel, cobalt and iron-supported microsilicate. Polish J. Chem. Technol. 23 (3) (2023) 101–109. Crossref

(2) M.I. Baikenov, S. Tyanakh, F.Y. Ma, et al. Viscosity model for the middle fraction of Atasu-Alashankou oil sludge. Mendeleev Commun. 34 (3) (2024) 446–449. Crossref

(3) S. Tyanakh, M.I. Baikenov, A.M. Gulmaliev, et al. Kinetics of thermolysis of a low-temperature tar in the presence of a catalyzer agent with deposited metals. Bull. Univ. Karaganda Chem. 4 (108) (2022) 89–98. Crossref

(4) M.S. Muñoz, C.M. Rodríguez, A.G. Rudnikas, et al. Physicochemical characterization, elemental speciation and hydrogeochemical modeling of river and peloid sediments used for therapeutic uses. Appl. Clay Sci. 104 (2015) 36–47. Crossref

(5) Y. Chen, A. Banin, M. Schnitzer. Use of the scanning electron microscope for structural studies on soil and soil components. In: S.E.M., Part 3: Proceedings of the Workshop on Techniques for Particulate Matter Studies on SEM, 1976, pp. 425–432.

(6) Zh.K. Kairbekov. Pererabotka tverdyh gorjuchih iskopaemyh. Almaty: BTS Print, 2014, 260 p. (in Russian).

(7) Zh.K. Kairbekov, S.M. Suimbaeva, I.M. Dzheldybaeva, et al. Antioxidant activity and bioavailability of humic substances of low-mineralized sulphide mud. Eng. Sci. 25 (2023) 941–948. Crossref

(8) I.M. Dzheldybaeva, Z.K. Kairbekov, A.S. Maloletnev, et al. Physicochemical and antioxidant properties of humic substances from coals of the Oy-Karagay and Kiyakty deposits in the Republic of Kazakhstan. Solid Fuel Chem. 56 (2022) 471–477. Crossref

(9) Zh.K. Kairbekov, M.T. Toktamysov, N. Zhalgasuly, et al. Kompleksnaya pererabotka burykh uglei Tsentral’nogo Kazakhstana (Integrated processing of brown coal from Central Kazakhstan). Almaty: KazNU, 2014. (in Russian).

(10) Zh.A. Arziev. Ugli Kyrgyzstana kak osnova dlja poluchenija guminovyh udobreniĭ i stimuljatorov rosta rasteniĭ. In: Sovremennye problemy nauki i tehniki: Sb. nauchn. tr. regional’noĭ nauchn.-teoret. konf., Zhalalabatskiĭ gos. tehn. in-t, Zhalalabat, 2002, 1, pp. 34–38. (in Russian).

(11) X. Feng, R. Xiao, S.M. Condé, et al. Preparation of humic acid from weathered coal by mechanical energy activation and its properties. Minerals 14 (7) (2024). Crossref

(12) B. Ismailov, B. Zakirov, A. Kadirbayeva, et al. Methods for obtaining phosphorus-containing fertilizers based on industrial waste. Inorganics 11 (6) (2023) 1–12. Crossref

(13) T. Das, M. Bora, J. Tamuly, et al. Coal-derived humic acid for application in acid mine drainage (AMD) water treatment and electrochemical devices. Int. J. Coal Sci. Technol. 8 (6) (2021) 1479–1490. Crossref

(14) T. Das, B.K. Saikia, B.P. Baruah, et al. Characterizations of humic acid isolated from coals of two Nagaland coalfields of India in relation to their origin. J. Geol. Soc. India 86 (4) (2015) 468–474. Crossref