title: Effect of carbon dioxide concentration on the bioleaching of a pyrite-arsenopyrite ore concentrate.
abstract: The effect of carbon dioxide concentration on the bacterial leaching of a pyrite-arsenopyrite ore concentrate was studied in continuous-flow reactors. Steady-state operation with two feed slurry densities, 6 wt% and 16 wt% solids, were tested for the effect of carbon dioxide concentration. Bacterial growth rates were estimated via the measurement of carbon dioxide consumption rates. Aqueous-phase carbon dioxide concentrations in excess of 10 mg/L were found to be inhibitory to bacterial growth.
authors.affiliation: Department of Chemical Engineering, 3290 Merrill Engineering Building, University of Utah, Salt Lake City, Utah 84112, USA.
authors.forename: S
authors.initials: S
authors.lastname: Nagpal
authors.forename: D
authors.initials: D
authors.lastname: Dahlstrom
authors.forename: T
authors.initials: T
authors.lastname: Oolman