Abstract

Consumer batteries in urban litter can be significant sources of storm-water pollution. Recent studies have reported annual urban battery litter rates as high as 215 batteries per hectare of pavement and 0.4 batteries per meter of street curb. On average, 75% of these batteries are leaking or have already discharged their internal reactants. However, many battery sizes, brands, and power chemistries are littered and this diversity makes it difficult to quantify their cumulative pollution potential. The amount of zinc released from AA size alkaline and zinc chloride/zinc carbon (ZnCl/ZnC) batteries which account for approximately 90% of urban battery litter is examined. Results are presented for batch rupture release extractions of 52 alkaline battery products yielding zinc releases of 20–40 mg/L and 57 ZnCl/ZnC products yielding zinc releases of 400–1,400 mg/L. Results of continuous flow column extractions are also presented to gauge releases following initial battery rupture. Disassembly analyses are use...

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