INVESTIGATION OF THE ABILITY OF HUMIC ACIDS OF PEAT TO COMPLEX WITH ZINC IONS

Today, much attention is being paid to the issue of processing peat into useful and environmentally friendly products that could be used in various fields of industry and agriculture. In this work, the mechanisms of interaction of zinc (II) ions with humic acids (HA) isolated from lowland peat, a peat deposit in Syktyvkar district of the Komi Republic, are investigated. During the static sorption experiment, it was revealed that when interacting with a solution of zinc nitrate (pH 3.0) with humic acids, the maximum degree of extraction of zinc ions from the liquid phase was 54%. Upon further leaching of the sorbed ions, 78% is removed using highly acidic desorbents, and the remaining amount (up to 12.4%) remains in the humic acid structure. The purpose of this work is to study the sorption process on humic acids of lowland peat extracted in the vicinity of the Komi Republic in order to assess the possibility of using HA as ion-exchange and chelating preparations for crop production and agriculture and ecology in general.