ENHANCEMENT OF BACTERIAL IRON AND SULFATE RESPIRATIONFOR IN-SITU BIOREMEDIATION OF ACID MINE DRAINAGE SITES:A CASE STUDY

摘要

The prevention of AMD in situ is more attractivecompared to subsequent downgradient treatmentalternatives that do not involve source control. AMDsource control can be achieved by shifting the microbialactivity in the sulfidic rock from pyrite oxidation toanaerobic heterotrophic activity. This is achieved byadding biodegradable organic carbon amendments to thesulfidic rock. This technique was applied in anabandoned mine pool with a pH of 3-3.5. Followingtreatment, near-neutral pH and decreased effluent heavymetal concentrations were achieved. In situbioremediation by enhancement of bacterial iron andsulfate reduction is a promising technology for AMDprevention.