Study of microelement containing nitrogen fertilizers based on spent lithium-ion battery

Abstract

Abstract Ammonium nitrate is a hygroscopic and caking product for growing agricultural products. In order to improve the properties of ammonium nitrate, the composition of the calcined and crushed cathode material from the used lithium ion battery was studied. Since the cathode material mainly consists of lithium, cobalt, manganese and nickel, it has been adopted as a polymicroelement-containing additive to improve the composition and properties of ammonium nitrate. Studies have shown that the introduction of cathode powder into the ammonium nitrate melt in the amount of 0.5-3.0 g in relation to 100 g of ammonium nitrate led to an increase in trace elements such as lithium, cobalt, manganese and nickel from 0.0094 to 0.0527; from 0.0561 to 0.2395; 0.0387 to 0.2860 and from 0.0112 to 0.0387%, respectively. The microelement containing nitrogen fertilizers obtained in this way have a significant digestibility of 2% citric acid, 0.2M Trilon B and an aqueous form. The static strength of the granules of the obtained trace-containing nitrogen fertilizers ranges from 4.62 to 6.13 MPa, which is 3.40-4.51 and 2.85-3.78 times greater than pure and industrial ammonium nitrate. High values of fertilizer strength contributed to an increase in the dissolution rate of granules of new types of nitrogen fertilizers from 71 to 87 sec. This suggests that the obtained microelement containing nitrogen fertilizers, according to the established values of the dissolution rate, will be leached out of the soil 1.6–2.0 and 1.5–1.9 times slower, respectively, than pure and industrial ammonium nitrate.