The role of orientation of crystal lattice on the development of bacterial leaching patterns on pyrite single crystals

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Title: The role of orientation of crystal lattice on the development of bacterial leaching patterns on pyrite single crystals
Authors: Ndlovu, S
Monhemius, AJ
Item Type: Journal Article
Abstract: To investigate the influence of orientation of crystal lattice on the bacterial leaching of pyrite crystals, single crystals of 100, 111 and 110 plane orientations were used for the study. Experiments were carried out in the presence of a Thiobacillus ferrooxidans culture. The different corrosion patterns observed on the surfaces of the bioleached samples suggests a variation in cell-surface interaction from one crystal plane to the other. The surface corrosion patterns generally reflected the influence of the symmetrical arrangement of the atomic planes in the lattice on which they formed. The results indicate that the surface properties of mineral sulphides may control the evolution of corrosion patterns and consequently the initial oxidation process in acid bacterial leaching.
Issue Date: 1-Nov-2004
Date of Acceptance: 1-Nov-2004
URI: http://hdl.handle.net/10044/1/65326
ISSN: 2225-6253
Publisher: South African Institute of Mining and Metallurgy
Start Page: 573
End Page: 578
Journal / Book Title: Journal of the Southern African Institute of Mining and Metallurgy
Volume: 104
Issue: 10
Copyright Statement: © 2004 The South African Institute of Mining and Metallurgy.
Keywords: Science & Technology
Technology
Physical Sciences
Metallurgy & Metallurgical Engineering
Mining & Mineral Processing
DENSITY-FUNCTIONAL THEORY
THIOBACILLUS-FERROOXIDANS
MECHANISM
SURFACES
DISSOLUTION
OXIDATION
SULFUR
MODEL
FES2
Science & Technology
Technology
Physical Sciences
Metallurgy & Metallurgical Engineering
Mining & Mineral Processing
DENSITY-FUNCTIONAL THEORY
THIOBACILLUS-FERROOXIDANS
MECHANISM
SURFACES
DISSOLUTION
OXIDATION
SULFUR
MODEL
FES2
0914 Resources Engineering And Extractive Metallurgy
Mining & Metallurgy
Publication Status: Published
Appears in Collections:Faculty of Engineering
Earth Science and Engineering



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