Abstract
In this paper we describe the results of a research performed on pen alkaline-manganese batteries with the aim of checking the possibility of minimizing the release of metals from them when, exhausted, are disposed. This goal was temptatively looked for on inserting in the batteries a certain amount of chitin able to bind the metal ions formed by the natural oxidation of the metals contained in the batteries and by the acid rain dissolving action. The obtained results show that 1.2 g of chitin for each middle size pen model alkaline-manganese battery practically prevent any release of metals, without relevant change of the discharge curve of the battery. The effect of the addition is particularly marked if realised by the additive as contained in a PVC membrane.
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