Torres, DavidDavidTorresAyala, LuisLuisAyalaSaldana, ManuelManuelSaldanaCanovas, ManuelManuelCanovasJeldres, Ricardo I.Ricardo I.JeldresNieto, StevenStevenNietoCastillo, JonathanJonathanCastilloRobles, PedroPedroRoblesToro, NormanNormanToro2025-12-302025-12-3020192075-4701https://hdl.handle.net/20.500.12740/23917The deposits of Fe-Mn, in the seabed of the planet, are a good alternative source for the extraction of elements of interest. Among these are marine nodules, which have approximately 24% manganese and may be a solution to the shortage of high-grade ores on the surface. In this investigation, an ANOVA analysis was performed to evaluate the time independent variables and MnO2/reducing agent in the leaching of manganese nodules with the use of different Fe reducing agents (FeS2, Fe2+, Fe-0 and Fe2O3). Tests were also carried out for the different reducing agents evaluating the MnO2/Fe ratio, in which the Fe-0 (FeC) proved to be the best reducing agent for the dissolution of Mn from marine nodules, achieving solutions of 97% in 20 min. In addition, it was discovered that at low MnO2/Fe ratios the acid concentration in the system is not very relevant and the potential and pH were in ranges of -0.4-1.4 V and -2-0.1 favoring the dissolution of Mn from MnO2.Acceso AbiertoMnO2acid mediaANOVAdissolutionhttp://dx.doi.org/10.3390/met9121316