Transition metal ions (Ni 2+, Cu 2+, and Cd 2+) are recovered by 90 % from wastewater. Transition metal ions are enriched to a 43-fold concentration, achieving 99.8% purity. Leveraging the latent value within battery manufacturing wastewater holds considerable potential for promoting the sustainability of the water-energy nexus.
Lithium-ion battery production wastewater predominantly contains: N-methylpyrrolidone (NMP) Ammonium Carbon powder Sodium Sulphate (Na2SO4) Organic lipids Traces of heavy metals Organic pollutants Why Choose Boromond Wastewater Treatment Process?
If the battery wastewater is not treated well before discharge to environment, lead can contaminate food and water, and be present in nature. This can cause extreme harm to human health such as damage to organs, kidney, and nervous systems [ 10, 11 ].
There has been a steep increase in the global demand for lithium, and developing an economic supply of lithium is thereby important for battery industries. This study presents a new method for recovering lithium in wastewater from battery recycling plants, in which a considerable amount of lithium (∼1900 mg L −1) is discarded.
The removal efficiency of lead was increased after using a carbonation step with 68% for quicklime and 69% for slaked lime. The carbonation process not only enhanced the lead removal efficiency in the battery wastewater but also reduced pH to meet requirements of environmental regulations.
The average concentration of lead in wastewater is about 3–15 mg/L and the pH of wastewater falls in the range of 1.6-2.9 [ 9 ]. If the battery wastewater is not treated well before discharge to environment, lead can contaminate food and water, and be present in nature.