Changes in the Properties of Humic Acids Due to the Effects of High Temperatures

被引：0
作者：
M. A. Rusakova [1 ]
O. Yu. Drozdova [2 ]
S. A. Lapitskiy [1 ]
机构：
[1] Moscow State University, Moscow
[2] Fedorovsky Russian Research Institute of Mineral Raw Materials, Moscow
来源：
Moscow University Geology Bulletin | 2024年 / 79卷 / 6期
基金：
俄罗斯科学基金会;
关键词：
destruction; humic acids; hydropyrolysis; kinetic parameters;
D O I：
10.3103/S0145875224700844
中图分类号：
学科分类号：
摘要：
Abstract: Changes in the properties of humic acids (HAs) have been studied at high temperatures. The process of hydropyrolysis of HAs was investigated and its thermal stability was estimated. The experimental data on thermal destruction of alkaline HA solutions at 150, 200, and 250°C and water vapor saturated pressure were obtained. It has been shown that hydropyrolysis changes the degree of condensation of molecules, significantly increases the number of functional groups, and decreases the average molecular weight. Our experimental results allowed the calculation of the parameters of thermal stability of HAs. © Allerton Press, Inc. 2024.
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页码：872 / 877
页数：5
相关论文
共 26 条
  • [1] Aleshina A.R., Drozdova O., Lapitskii S.A., Changes in the forms of metal occurrence during photochemical oxidation of organo-mineral compounds in swamp and river waters, Moscow Univ. Geol. Bull, 4, pp. 605-611, (2022)
  • [2] Akimbekov N.S., Digel I., Tastambek K.T., Low-rank coal as a source of humic substances for soil amendment and fertility management, Agriculture, 11, pp. 1-25, (2021)
  • [3] Amoah-Antwi C., Kwiatkowska-Malina J., Szara E., Assessing factors controlling structural changes of humic acids in soils amended with organic materials to improve soil functionality, Agronomy, 12, pp. 1-17, (2022)
  • [4] Arinushkina E.V., Rukovodstvo po khimicheskomu analizu pochv. 2-e izd., pererab. i dop. (, (1970)
  • [5] Ascough P.L., Bird M.I., Brock F., Hydropyrolysis as a new tool for radiocarbon pre-treatment and the quantification of black carbon, Quat. Geochronol, 4, pp. 140-147, (2009)
  • [6] Ascough P.L., Bird M.I., Meredith W., Hydropyrolysis: Implications for radiocarbon pretreatment and characterization of black carbon, Radiocarbon, 52, pp. 1336-1350, (2010)
  • [7] Bazhina N.L., Ondar E.E., Deryabina Y.M., Specificity of light absorption in visible and ultraviolet regions of soil humic acid spectrum of Western Tuva, Vestn. OGU, 167, 6, pp. 189-194, (2014)
  • [8] Bowen J.C., Kaplan L.A., Cory R.M., Photodegradation disproportionately impacts biodegradation of semi-labile DOM in streams, Limnol. Oceanogr, 65, pp. 13-26, (2020)
  • [9] Cory R.M., Kling G.W., Interactions between sunlight and microorganisms influence dissolved organic matter degradation along the aquatic continuum, Limnol. Oceanogr. Lett, 3, pp. 102-116, (2018)
  • [10] Drozdova O., Aleshina A.R., Tikhonov V.V., Coagulation of organo-mineral colloids and formation of low molecular weight organic and metal complexes in boreal humic river water under UV-irradiation, Chemosphere, 250, (2020)
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