METHOD OF OBTAINING OF HUMIC ACIDS WITH SPECIFIED GROUP INTERRELATION OF HUMIC AND FULVIC ACIDS FROM CAUSTOBIOLITHS OF A COAL SERIES

摘要

FIELD: agriculture.;SUBSTANCE: method of obtaining of humic acids with the specified group interrelation of humic and fulvic acids from caustobioliths of carbon series by the method of alkaline extraction, and caustobioliths is milled in advance and sieved through the screen with the cells 214×214 microns, with simultaneous execution of electrochemical activation of water with its separation into catholyte and anolyte, extraction of humic and fulvic acids is performed in two stages, meanwhile the first stage of extraction is performed in the device with the mixer in alkaline medium created by adding of catholyte to caustobioliths of the specified granulometric structure, at pH 10 and temperature not higher 20° C, and the second stage - at circulation of hydrogel, obtained at the first stage, through flowing hydrodynamic cavitator, generating an acoustic field with the strength up to 3.5 W/cm² and frequency up to 40 kHz at the temperature not higher 74° C, then mixture of extracted humic acids and fulvic acids is separated by anolyte at pH 2 in the separator and mix them in the proportion ensuring the specified interrelation of humic acids and fulvic acids in a finished product.;EFFECT: invention allows to ensure the specified interrelation of groups of humic acids and fulvic acids in the composition of obtained product.;1 dwg, 2 tbl, 1 ex