Biologically Fe2+ oxidizing fluidized bed reactor performance and controlling of Fe3+ recycle during heap bioleaching: an artificial neural network-based model

Özkaya B., ŞAHİNKAYA E. , Nurmi P., Kaksonen A. H. , Puhakka J. A.

BIOPROCESS AND BIOSYSTEMS ENGINEERING, cilt.31, ss.111-117, 2008 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 31 Konu: 2
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1007/s00449-007-0153-9
  • Sayfa Sayıları: ss.111-117


The performance of a biological Fe2+ oxidizing fluidized bed reactor (FBR) was modeled by a popular neural network-back-propagation algorithm over a period of 220 days at 37 degrees C under different operational conditions. A method is proposed for modeling Fe3+ production in FBR and thereby managing the regeneration of Fe3+ for heap leaching application, based on an artificial neural network-back-propagation algorithm. Depending on output value, relevant control strategies and actions are activated, and Fe3+ production in FBR was considered as a critical output parameter. The modeling of effluent Fe3+ concentration was very successful, and an excellent match was obtained between the measured and the predicted concentrations.