INFLUENCE OF ACID CONCENTRATION IN HYDROFLUORIC ACID ELECTROLYTE ON ITS ENVIRONMENTAL AND OPERATIONAL PARAMETERS DURING ELECTROCHEMICAL PROCESSING OF WASTE CAR BATTERIES
The influence of the compositions of hydrofluoride electrolytes on the electrochemical processing of used lead-acid batteries has been studied. An increase in the acid concentration in the proposed composition of the hydrofluoride electrolyte reduces the release of specific emissions of fluorides by 1.2 times and lead by 2.1 times per ton of released lead as compared to the previously known electrolyte by increasing the rate of the SCA processing process by 2.1 times. It is shown that by changing the acid concentration from 100 to 180 g / l, it is possible to reduce the overall toxicity level of emissions of harmful substances into the environment during the electrochemical utilization of used batteries by 1.4 times. The results of the calculation of the dispersion of harmful substances released from the surface of the considered hydrofluoride electrolytes do not exceed the current standards, therefore, in order to increase the production capacity of the enterprise, the use of these electrolytes in practice is advisable.