The necessity of recycling spent batteries in order to recover metals
and to protect the environment is emphasized. Some experiments have be
en made to develop a hydrometallurgical process for metal recovery in
alkaline manganese batteries. The components; are easily separated: zi
nc can be electroplated and manganese(II) can be oxidized to dioxide;
Mn(IV) is solubilized in acidic hydrogen peroxide and reprecipitated b
y bases.