Changes in the Composition and Properties of Humic Substances upon the Mechanical Treatment of Coals with Mineral Salts
| Autor: | E. V. Linkevich, N. V. Yudina, A. V. Savel’eva |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Ammonium sulfate
Antioxidant Mineral integumentary system Ammonium phosphate General Chemical Engineering medicine.medical_treatment General Chemistry complex mixtures chemistry.chemical_compound Fuel Technology chemistry Reagent Environmental chemistry Oxidizing agent medicine Composition (visual arts) |
| Zdroj: | Solid Fuel Chemistry. 55:229-235 |
| ISSN: | 1934-8029 0361-5219 |
| DOI: | 10.3103/s0361521921040108 |
| Popis: | The mechanical treatment (MT) of brown coals in the presence of a complex of oxidizing alkaline reagents and mineral salts increased the yield of water-soluble humic substances (HSs) by 20–30%. The composition of coals and reagents in the MT affected the concentration of acidic functional groups in humic acids. Ion-exchange processes during the MT of coals with mineral salts were accompanied by an increase in the concentrations of macro and trace elements in the composition of HSs. A significant increase in the antioxidant activity of humic acids was found upon MT with ammonium phosphate and ammonium sulfate. Mineral elements in HSs exhibited physiological activity by influencing the development of wheat roots and seedlings. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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