Investigation on humic acids of Shivee-Ovoo coal

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 higher 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 humic 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.