This paper reports a new lead recovery method, in which high purity metallic Pb is directly produced by electrolyzing PbO obtained from waste lead acid batteries in alkaline solution. The sodium ionic exchange membr. The lead acid battery has been widely used in automobile, energy storage and many other f. The powders of crushed positive and negative plates from the waste lead acid batteries and sulfuric acid were placed in a three-neck flask in which the ferrous sulphate was ad. When PbO is electrolyzed in alkaline solution, the possible electrode reactions of the cathode and anode can be expressed as:(1–1)Cathode:. For the cathodic. The high purity metallic lead can be obtained directly through electrolyzing an alkaline solution containing PbO which is obtained from waste lead acid batteries by catalytic reaction. This work was supported by Beijing Nova Program (2008B17), the Foundation of Excellent Doctoral Dissertation of Beijing City (YB20081001002) and National Natural Science Foundati.
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What is the importance of recycling lead from Wasted lead acid batteries?
Recycling lead from wasted lead acid batteries is related to not only the sustainable development of lead-acid battery industry, but also the reduction of the lead pollution to the environment.
A lead acid battery consists of a negative electrode made of spongy or porous lead. The lead is porous to facilitate the formation and dissolution of lead. The positive electrode consists of lead oxide. Both electrodes are immersed in a electrolytic solution of sulfuric acid and water.
What happens when a lead acid battery is charged?
Voltage of lead acid battery upon charging. The charging reaction converts the lead sulfate at the negative electrode to lead. At the positive terminal the reaction converts the lead to lead oxide. As a by-product of this reaction, hydrogen is evolved.
How to produce high purity metallic PB from lead acid batteries?
This paper reports a new lead recovery method, in which high purity metallic Pb is directly produced by electrolyzing PbO obtained from waste lead acid batteries in alkaline solution.
What are the raw materials of lead acid batteries?
Since the positive electrode and negative electrode active materials are composed of PbO 2 /PbSO 4 and Pb/PbSO 4, lead is the most important raw material of lead acid batteries. In 2010, the world's annual refined lead output reached up to 9.3 million tons, of which about 86% was consumed in the manufacture of lead acid batteries, .
How do lead acid batteries store energy?
Lead acid batteries store energy by the reversible chemical reaction shown below. The overall chemical reaction is: P b O 2 + P b + 2 H 2 S O 4 ⇔ c h a r g e d i s c h a r g e 2 P b S O 4 + 2 H 2 O At the negative terminal the charge and discharge reactions are: P b + S O 4 2 - ⇔ c h a r g e d i s c h a r g e P b S O 4 + 2 e -