ISSN:
1574-6976
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Abstract: Technological exploitation of biohydrometallurgy for industrial metal recovery starts with batch and lab scale researches aimes at defining the basic information on microbiological and physico-chemical conditions influencing the process. An Italian ore having MnO2 as the most relevant component (27%) was subjected to bioleaching under different conditions, both in batch and lab scale fermenters. The results show that microbial solubilization of MnO2 in batch cultures requires MnO2 to be reduced to Mn2+. The process is influenced by several factors, e.g. nature, amount of organic matter and specific granulometry of the mineral. Quite surprisingly, aerobic conditions are required for manganese solubilization which, on the contrary, accumulates in a reduced chemical form. In a lab scale fermenter, multifactorial analysis of both data and physico-chemical factors indicates that an almost general correlation is found between the extent of sucrose expenditure and pyrolusite solubilization when different concentrations of sucrose and MnO2 are applied.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1574-6976.1993.tb00273.x
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