INFLUENCE OF CARBONACEOUS SORBENTS OBTAINED FROM VEGETABLE RAW MATERIALS ON THE MO-BILITY OF ZN IONS IN SOIL

Soil pollution with heavy metals not only reduces crop yields, but also negatively affects human and animal health. Even such a biophilic element as Zn, when excessively supplied to living organisms, has toxic effect. The introduction of sorbents into the soil makes it possible ensure binding pollutants in situ, leading decrease their mobility biological availability. In course work, efficiency application physicochemical characteristics organic carbonaceous sorbents, granular activated carbon (GAC) commercial production biochar obtained from regional agricultural waste (rice husk) were investigated compared, which determine adsorption capacity respect Zn ions. Under conditions model experiment, metal inactivation was shown contaminated soils using sorbents. Due high sorption properties GAC biochar, content all mobile forms (exchange, complex specifically sorbed) compounds soils, found. most effective dose for reducing ions 5% mass both GAC.