Open AccessImpact of Molecular Hydrogen on Chalcopyrite Bioleaching by the Extremely Thermoacidophilic Archaeon Metallosphaera sedula
Author(s) -
Kathryne S. Auernik,
Robert M. Kelly
Publication year - 2010
Publication title -
applied and environmental microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.552
H-Index - 324
eISSN - 1070-6291
pISSN - 0099-2240
DOI - 10.1128/aem.02016-09
Subject(s) - bioleaching , chalcopyrite , chemistry , copper , organic chemistry
Hydrogen served as a competitive inorganic energy source, impacting the CuFeS2 bioleaching efficiency of the extremely thermoacidophilic archaeonMetallosphaera sedula . Open reading frames encoding key terminal oxidase and electron transport chain components were triggered by CuFeS2 . Evidence of heterotrophic metabolism was noted after extended periods of bioleaching, presumably related to cell lysis.