Cobalt emission standards for lithium battery wastewater
Spent LIBs contain many high-value elements: 5 wt%–20 wt% cobalt, 5 wt%–7 wt% lithium and 5 wt%–7 wt% nickel, even higher than natural ores [6]. As shown in Fig. 2, by 2040, the amount of copper, lithium, nickel and cobalt recovered from waste batteries can reduce minerals'' comprehensive primary supply demand by about 8 % [7]. Therefore ...