Chemical-biological hybrid systems for the metal recovery from waste lithium ion battery.

ABSTRACT

The metals in the waste lithium-ion battery (LIB) are in complex form with coating materials. It consists of copper and aluminium as coiling metals for anode and cathode covered by black powder containing lithium and cobalt. Chemical-biological hybrid systems are found to be useful for the process of metal extraction from LIB waste compared with the individual technique. Lysinibacillus - citric acid hybrid combination provides a noble pathway for the recovery of lithium and cobalt in one pot process. Citric acid (CA) treatment is used to separates copper and aluminum foil from black powder. It leaves lithium and cobalt in the resultant extractant and by the proposed hybrid combination lithium is further separate through leaching and cobalt through biosorbtion. The hrbrid treatment increases lithium leaching by 25% and cobalt biosorption by 98%.