TRANSFORMATION OF HUMIC ACIDS OF LIQUID HUMIC FERTILIZERS DURING THEIR STORAGE

UDC 661.152.4

  • Denis Vladimirovich Dudkin Surgut State University Email: dvdudkin@rambler.ru
  • Ludmila Anatolyevna Zhuravleva Surgut State University Email: zhlala@yandex.ru
  • Boris Romanovich Shishadsky Surgut State University Email: red_1_bull@mail.ru
  • Natalia Gennadievna Tanykova Surgut State University Email: tanykova_ng@surgu.ru
DOI_disc_logo https://doi.org/10.14258/jcprm.20240312635
Keywords: humic acids, humic fertilizers, peat, storage, biological activity, destruction, peripheral part

Abstract

The subject of the study is liquid humic fertilizers obtained by the original mechanochemical technology based on peat and vegetable raw materials. The aim of the study is to evaluate the effect of prolonged exposure to aqueous alkali solutions during storage on the chemical composition of humic substances that are part of liquid humic fertilizers. The change in the chemical composition of the active substances of fertilizers "Lignovit" and "Gumovit" (LLC Chemtechnology, Khanty-Mansiysk) after the expiration of the shelf life was studied. A decrease in the molecular weight of humic acids (HA) in the composition of liquid humic fertilizers was found due to the hydrolytic destruction of their peripheral and skeleton parts. Destructive hydrolytic processes are caused by prolonged exposure to an aqueous-alkaline solution, which is included in its composition. It has been shown by IR spectroscopy that hydrolytic destruction is caused by the destruction of simple and complex ether bonds in the structure of humic acid molecules. A decrease in the number of carboxyl and carbonyl groups was noted, which indicates partial decarboxylation of HA during storage. Using the example of the growth of micro- and macromycetes, it was found that long-term storage of liquid humic fertilizer does not have a negative impact on the level of its biological activity in relation to this group of organisms.

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Author Biographies

Denis Vladimirovich Dudkin, Surgut State University

Doctor of Technical Sciences, Candidate of Chemical Sciences, Associate Professor of the Department of Chemistry

Ludmila Anatolyevna Zhuravleva, Surgut State University

Candidate of Chemical Sciences, Associate Professor of the Department of Chemistry

 

Boris Romanovich Shishadsky, Surgut State University

Master's student

Natalia Gennadievna Tanykova, Surgut State University

Postgraduate Student

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Published
2024-10-02
How to Cite
1. Dudkin D. V., Zhuravleva L. A., Shishadsky B. R., Tanykova N. G. TRANSFORMATION OF HUMIC ACIDS OF LIQUID HUMIC FERTILIZERS DURING THEIR STORAGE // chemistry of plant raw material, 2024. № 3. P. 320-327. URL: http://journal.asu.ru/cw/article/view/12635.
Issue
No 3 (2024)
Section
Peat and products of its processing

Copyright (c) 2024 chemistry of plant raw material

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