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BSU bulletin. Chemistry. Physics

Bibliographic description:
Purevsuren B.
,
Bazarov B. G.
,
Ankhtuya A.
,
Bazarova J. G.
INVESTIGATION ON HUMIC ACIDS OF SHIVEE-OVOO COAL // BSU bulletin. Chemistry. Physics. - 2019. №4. . - С. 16-22.
Title:
INVESTIGATION ON HUMIC ACIDS OF SHIVEE-OVOO COAL
Financing:
Codes:
DOI: 10.18101/2306-2363-2019-4-16-22UDK: 662.642
Annotation:
The coal of Shivee-Ovoo deposit was analyzed by proximate and ultimate analysis and have been confirmed that the Shivee-Ovoo coal is a low-rank lignite coal of B2 mark and it is suitable raw material for humic acids. A humic acids with higher yield — 23,22% have been isolated from the Shivee-Ovoo coal. The solubility of humic acids of Shivee-Ovoo coal in ethanol — 43,0% and water — 78,5% was determined and the yield of ethanol soluble fraction (hematimilanic acid) and the yield of water soluble fraction are comparatively high- er and these fractions are most important biologically active components in the humic acids with higher penetration ability in soil higher bioawilability by plants. The IR spectra of hu- mic acids of Shivee-Ovoo coal and it’s humic acids show that the organic matter of humic acids consists mainly aliphatic and aromatic compounds with carboxylic (-COOH), carbonyl (>CO), hydroxyl (-OH) and etheric (-O-) groups which are characteristics of highly oxidized organic matter.
Keywords:
Shivee-Ovoo coal, pyrolysis, brown coal, humic acid, lignin, biologically active components, IR spectra, organic substances of humic acids.
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