Cradle to Gate
Identity ID
ec733159-ae8f-47d3-beaf-630ebcc88480
Waste treatment
Associated ID
bb51e399-b0ee-49c9-861a-1f118959eb9d
Included activities starts
Included activities ends
Description
Spent lead-acid batteries typically come from end-of-life vehicles and electric bicycles. Depending on structural and functional differences, lead-acid batteries can be classified into starting (flooded) lead-acid batteries, motive (valve-regulated) lead-acid batteries, and other types. Spent lead-acid batteries contain 30%--40% (by mass) waste battery paste, whose main component is PbSO₄. PbSO₄ has very low solubility and is insoluble in common acids such as sulfuric acid, hydrochloric acid, and nitric acid. Carbonates and alkalis are the most commonly used reagents for desulfurization of waste battery paste.
In this dataset, sodium carbonate and sodium hydroxide are used as desulfurizing agents added to the battery paste for desulfurization, followed by pressure filtration. The filtrate allows for the recovery process of anhydrous sodium sulfate, and the reaction process generates filter residue, water vapor, and centrifugal separation wastewater.
This dataset is applicable to the desulfurization process of lead paste from spent lead-acid batteries.
Activity Description
This dataset represents the desulfurization process of lead paste from spent lead-acid batteries, involving the reaction with sodium carbonate solution and sodium hydroxide solution added into the lead sludge, followed by press filtration, including the consumption of energy and energy media.
Process Description
Desulfurize the separated lead paste first by adding sodium carbonate and sodium hydroxide to the lead sludge for reaction, followed by pressing filtration.
Time period
2021
2026
Geography
China
Geography comment
Guizhou Province
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Desulfurization treatment of lead paste using sodium carbonate and anhydrous sodium sulfate