Bioleaching Process for Copper Extraction from Waste in Alkaline and Acid Medium

Flotation wastes are becoming a valuable secondary raw material and source of many metals semimetals worldwide with the possibilities industrial recycling. The flotation tailings contain oxide sulfide minerals that have not been sufficiently stabilized form acidic mine waters, which in turn contaminate groundwater, rivers, reservoi6sediments. An effective way to recycle these is recover through leaching. While focus on acid bioleaching by iron- sulfur-oxidizing bacteria, alkaline leaching, removal iron-containing surface coatings contribute significantly overall environmental efficiency For this study, static percolate copper from waste at Bor Serbia was investigated then environments. aim study verify effect pH nutrient stimulation process element extraction. A sample taken site, characterized XRF analyses. concentration leached increased when dissolved during bioleaching. highest yield achieved after 9 days reached 67%. addition nutrients medium enhanced degradation Cu recovery 74%, while Fe Ag recoveries were affected. Combined media bacteria should be good reference for ecological wastes.