INVESTIGATION OF SORPTION PROPERTIES OF A DISPERSED SYSTEM OBTAINED FROM NATURAL BIOPOLYMERS

Abstract

In this paper, the regularities of the processes of structure formation of mixed aqueous solutions of sodium humate with a natural polymer – gelatin are studied and their sorption properties are studied. The choice of gelatin as a natural polymer is due to its high gel-forming properties, the presence of functional groups that contribute to the formation of intermolecular bonds, as well as industrial availability. To obtain a dispersed system, a method of mixing water solutions of the initial components is used, in which the self-organizing forces of the initial polymer components are manifested. The modifying influence of humate, pH of the medium and time on the process of system structure formation is studied. It is assumed that the stability of mixtures is related to the structure of the structure of humate and gelatin. That when combined, various forces of intermacromolecular interaction come to the fore and self-organizing capabilities of polymers are realized, which lead to a significant improvement in the properties of the original polymers. It is noted that the directed modification by combining polymers gives almost limitless possibilities for their application in various fields, primarily in wastewater treatment. Sorption properties of absorption of copper, nickel and lead ions from aqueous solutions of their salts were studied for the obtained mixtures of different compositions. The influence of the ratio of initial components on sorption is estimated. It was found that the sorption activity of polymer-polymer complexes increases with the increase in the humate mixture. The effectiveness of their application in sorption processes is shown and they are recommended as sorbents for wastewater treatment from heavy metal ions.

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