Petrova O., Daumova G., Idrisheva Z., Mashekenova A., Kaissina M., 2022, Research on Potential Application of a New Fertilizer based on Natural Sorbents for Toxic Soils, Chemical Engineering Transactions, 94, 349-354.
The article considers the study on potential application of fertilizer containing natural sorbents from Kazakhstan deposits in order to develop a new organomineral fertilizer from household waste water and sorption materials. There was the study on the possibility for the developed organomineral fertilizers to influence heavy metals input into plant products, including those ones on polluted soil. There was the research on heavy metals input into soil with meltwater on urban territory plots close to metallurgic enterprises in order to apply the proposed new fertilizer. The following factors were defined: the required area of the plots, their service life period, produced fertilizers application load, economically reasonable distance for transporting fertilizers. The work demonstrates test results related to studying influence of new fertilizer types on Amoria creeping clover (Trifolium repens) feeding crop capacity, accumulation of heavy metals in soil and plants. Content of heavy metals was defined in plant products grown with new fertilizers application and it was proved that the proposed fertilizers were safe. Heavy metals content in plants decreases on 2.3 - 10.2 % of heavy metals content in soil if there is fertilizer based on shungite. Shungite-based fertilizer provides better results in copper and zinc than bentonite-clay based fertilizer (from 0.6 to 6 % of heavy metals content in soil). But bentonite-clay based fertilizer provides better results in cadmium and lead (0.4 - 1.9 %).
