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Bioleaching of low grade manganese ore with
Penicillium citrinum 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 45 microns; 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.
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