ISSN:
0142-2421
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
XPS has been used to follow the change of the ore surface composition during bioleaching with a mixed culture of microorganisms. In the original sample, the presence of MnO2 together with silica and alumina is observed. During bioleaching, Mn(IV) is progressively reduced to Mn(II) and signals due to the presence of the microorganisms appear in the C 1s and N 1s spectra.In the residual sample, a considerable amount of Mn associated with the cells of the microorganisms of reprecipitated in the from of the Mn(OH)2 is present on the surface of the ore. This Mn species can be removed completely by treatment with a dilute soultion of HCI.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/sia.7401601120
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