Abstract: Method of removing alkyl lead from air and other gases by contacting said air or other gas with at least a catalytic amount of lead dioxide at temperatures in the range between 60.degree. C. and 225.degree. C.

Abstract: A process is described for reducing the lead content of aqueous solution containing lead impurities in which the solution is contacted with metallic magnesium. Lead compounds are converted to water insoluble forms which are separated by recourse to physical processing such as steam distillation, filtration, settling, centrifugation, decantation and the like. In general, the process is conducted at pH of 7 to 11, preferably 8 to 9.5. Reaction temperature can be ambient temperature (25.degree. C.) or higher. In one embodiment the reaction is conducted in a steam distillation zone. The magnesium is added at a rate to provide at least 0.5 mole of magnesium per mole of lead, preferably 0.75 mole to 1.5 moles or more of magnesium per mole of lead.