Bioleaching of Low Grade Manganese Ore with Penicillium citrinum
نویسندگان
چکیده
A native microorganism, Penicillium citrinum was isolated from the top soil of a manganese mine. Based on its efficiency for manganese solubilisation, it was utilized for the leaching of a low-grade manganese ore. The effects of various parameters such as pulp density, particle size, sucrose concentration, inoculum size and bioleaching duration on manganese ore were studied. The optimised conditions for maximum solubilization of the manganese ore (64.58% Mn) were : a particle size of 45μm; a pulp density of 2% (w/v); a sucrose concentration of 10% (w/v); an inoculum dosage of 10% (v/v); and a 30 day duration. © 2002 SDU. All rights reserved.
منابع مشابه
Fungal Leaching of Manganese Ore
Bioleaching is technologically feasible for extraction of manganese from low grade ores (containing manganese less than 35% by weight). The principle involves the non-enzymatic reduction of pyrolusite [Mn(IV) oxides] to +2 oxidation state by fungi with the production of metabolites such as oxalic acid and citric acid. In the present investigation, a fungal strain, Penicillium citrinum was isola...
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