Electrodeposition of Zn-Mn alloys from recycling battery leach solutions in the presence of amines

Abstract

The recovery of metal ions by electrodeposition from solutions resulting from the lixiviation of spent Zn-MnO 2 batteries was studied. It was attempted to optimise the electrodeposition process, the selectivity of ion-separation, the morphologic characteristics, and the anticorrosive and galvanic properties of metallic deposits. The simultaneous deposition of zinc and manganese on different ferrous substrates under various experimental conditions was tested. This allowed us to access the efficiency of the electrodeposition, the morphology and composition of the metallic deposits, as well as their performance as galvanic coating layers. The effect of amine additives, namely, of methylamine and ethylenediamine, on the properties of the coatings was also studied. It was shown that the amines with buffering or passivating effects improve the simultaneous deposition of Mn.

Electroplating of Zinc on Mild Steel Obtained by Recovery of Exhausted Batteries Leach Solutions for Corrosion Protection.

“…In addition, the natural resources for the production of batteries are restricted. So, the recovery of exhausted batteries will be increasingly important to both human health and the environment [1][2]. In recent years, several processes have been developed for the recycling of batteries in order to minimize the adverse environment impacts caused by their residues and to satisfy new regulations appearing around the world.…”

Corrosion Resistance of Zn and Zn-Ni Electrodeposits: Morphological Characterization and Phases Identification

“…Zinc coatings protect steel both forming a physical barrier and providing a cathodic protection. The coverage corrosion resistance can be improved by using coverings of zinc alloys such as Zn-Ni, Zn-Fe, and Zn-Co [1][2][3][4]. Zinc metal has an excellent resistance and a wide application, especially as metal cover to prevent corrosion on steel exposed to water.…”