title: Assay of bacterial copper leaching from covellin at alkaline initial pH.
abstract: Copper sulphide CuS was leached by bacteria. Beginning with an initial pH of 9.1, the bacteria acidified the environment and at the same time leached up to 5 g copper per liter. It is characteristic that the pH may sometimes stabilize at 4.0--5.0 and not fall below this value.
mesh_terms: D001673:Biodegradation, Environmental; D003300:Copper / Q000378:metabolism*; D003470:Culture Media; D046508:Culture Techniques; D006863:Hydrogen-Ion Concentration; D010101:Oxygen Consumption; D013440:Sulfides / Q000378:metabolism*; D013464:Sulfuric Acids / Q000096:biosynthesis; D013855:Thiobacillus / Q000378:metabolism*
chemical_list: D003470:Culture Media; D013440:Sulfides; D013464:Sulfuric Acids; D003300:Copper