Date of Graduation
Statler College of Engineering and Mineral Resources
Chemical and Biomedical Engineering
Eung Ha Cho.
Chalcopyrite, sphalerite, and pyrite, were leached using a bioleaching mode and an electrobioleaching mode. The former mode was used to teach the minerals with the bacterium A. ferrooxidans in a bioreactor. In the latter mode, the leaching of the minerals was performed in a combination of a bioreactor and an electrochemical cell. The idea is that an increase in Fe(II) concentration, which is a nutrient of the bacteria, by electrochemical reduction of Fe(III) would increase the bacterial population and in turn would accelerate the leaching of the mineral.;It has been found that the electrobioleaching of chalcopyrite and pyrite is superior to the bioleaching in particular with respect to the fact that leaching conversion is higher and a high level of Fe(II) can be maintained. However, the electrobioleaching of sphalerite does not show an improvement over bioleaching.
Conner, Brian D., "Bioleaching and electrobioleaching of sulfide minerals" (2005). Graduate Theses, Dissertations, and Problem Reports. 1588.