Ionic 4 Lead in Automobile Batteries

In highly oxidizing environments, lead can occur as the 4+ ion, one form of Pb(IV). Thus the oxide Pb02, written in ionic form as Pb4+(02^)2, exists, as do the mixed oxides Pb203 and Pb-jCXj, which are combinations of Pb(II) as PbO and Pb(IV) as Pb02.

The elemental lead and the lead oxide Pb02 employed as the two electrodes in storage batteries in vehicles together now constitute the major use of the element. Storage batteries that are not recycled constitute the main source of lead in municipal waste; some states and countries have banned the discarding of such batteries. The majority of used lead storage batteries are recycled for their lead content. During the recycling operation, lead can be expelled into the environment if careful controls are not maintained. Indeed, such recycling operations often constitute urban "hot spots" of lead emission into the surrounding communities. Although lead recycling operations in the United States are carried out under strict control, this is not necessarily the case in developing countries, where batteries are often shipped for recycling.

Continue reading here: Tetravalent Organic Lead Compounds as Gasoline Additives

Was this article helpful?

0 0