Abstract:
Lead is recovered from lead-containing scrap metal in an electrolytic process employing an aqueous solution of C.sub.1-4 alkanesulfonic acid as the electrolyte at a high concentration, scrap lead as the anode, and an electroconductive cathode, impressing an electromotive force across the solution between the electrodes to provide a specified steady-state concentration of lead salt in the electrolyte, and continuing the process to deplete the anode and collect lead at the cathode.
Abstract:
A process for preventing odor-fading of liquefied petroleum gas odorized with organosulfur compounds wherein the gas is stored in containers having new or recently cleaned interior surfaces, such surfaces having been pretreated with benzotriazole, tolyl triazole, mercaptobenzothiazole, benzothiazyl disulfide or mixtures thereof.