K. M. Shpakodraev, S. I. Zherebtsov, K. S. Votolin, N. V. Malyshenko
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Composition and Properties of Extraction Resins and Fractions of Humic Substances of Brown Coals
The initial brown coals, humic substances and their fractions obtained from them, as well as bitumen were characterized using technical and elemental analysis, Fourier infrared, 13C NMR spectroscopy. The component composition of the obtained bitumen and its fractions was studied using the chromatography-mass spectrometry method. It has been established that during the fractionation of humic substances, the main part of aromatic compounds is concentrated in humus acids. The data on the study of the phytostimulating activity of various fractions of humic substances and their mixtures with the saponified component of the resin of extraction bitumen, in relation to wheat seeds of the Aphrodite variety, are presented. A positive eff ect on the growth performance of the studied fractions of humic substances separately and when used together in a mixture with the saponified component of bitumen resin was shown. The phytoactivity index (PI) of the studied initial samples and their mixtures is in the range of 1.04–1.64.
期刊介绍：
The journal publishes scientific developments and applications in the field of coal beneficiation and preparation for coking, coking processes, design of coking ovens and equipment, by-product recovery, automation of technological processes, ecology and economics. It also presents indispensable information on the scientific events devoted to thermal rectification, use of smokeless coal as an energy source, and manufacture of different liquid and solid chemical products.
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