STUDY OF THE COMPOSITION AND PROPERTIES OF VERMICULITE TREATED UNDER MECHANOCHEMICAL ACTIVATION IN THE PRESENCE OF ACID PHOSPHATE (NA2H2P2O7)

Abstract

The conditions of MX-treatment of vermiculites without additives and in the presence of salt (Na2H2P2O7) were established. The methods of BET Sorbtometer M and laser analyzer SALD 7071 show that specific surfaces and particle sizes, indicating spontaneous aggregation of particles depending on the time and multiplicity of MX-treatment, lead to a decrease in the degree of sorption. The results of the research conducted on MX-treatment of vermiculites both in the presence of acidic phosphate of the taken salts and without them contributes to an increase in sorption properties. First of all, the type of activator is centrifugal or planetary, of the two mills, the planetary mill is more efficient, because the measurement of particle size showed the smallest particle size, the specific surface area of the largest (11.921 m2/g). In the case of a planetary mill, the dependence of the increase in sorption properties associated with the participation of grinding bodies (Fe) in the transformation of vermiculite was revealed. The results of wheat germination with samples of vermiculite processed in a centrifugal mill showed a low growth of the shoot and root system, in comparison with the planetary mill, which is associated with the degree of particle grinding due to the difference in the mechanism of action during MX-processing. Studies of the effect on the germination of wheat seeds showed the greatest efficiency of modified vermiculites without salt during mechanochemical activation in a planetary mill (root 110.52%,growth104.41%).

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