Mechanism of the enhancement of bioleaching of copper from enargite by thermophilic iron-oxidizing archaea with the concomitant precipitation of arsenic

@inproceedings{Takatsugi2011MechanismOT,
  title={Mechanism of the enhancement of bioleaching of copper from enargite by thermophilic iron-oxidizing archaea with the concomitant precipitation of arsenic},
  author={Koichiro Takatsugi and Keiko Sasaki and Tsuyoshi Hirajima},
  year={2011}
}
Abstract Bioleaching of enargite by the thermophilic iron-oxidizing archaea, Acidianus brierleyi , at 70 °C for 27 days yielded a 90.9% recovery of Cu and 5.9% recovery of As. The preferential dissolution of Cu compared to As was mainly achieved by the formation of crystalline scorodite (FeAsO 4 ·2H 2 O). Although the chemical valence of As in enargite was confirmed to be As(III), most of the dissolved As was in the compound H 3 As V O 4 . This indicates that the H 3 As III O 3 released from… CONTINUE READING

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