Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53226#.VLhyzcnQrzE Author(s)    Ali Ahmadi , Mohammad Raouf Hosseini Affiliation(s) Department of Mining Engineering, Isfahan University of Technology, Isfahan, Iran . ABSTRACT Multiplicity of the chemical, biological, electrochemical and operational variables and nonlinear behavior of metal extraction in bioleaching environments complicate the mathematical modeling of these systems. This research was done to predict copper and iron recovery from a copper flotation concentrate in a stirred tank bioreactor using a fuzzy logic model. Experiments were carried out in the presence of a mixed culture of mesophilic bacteria at 35°  C, and a mixed culture of moderately thermophilic bacteria at 50°  C. Input variables were method of operation (bioleaching or electrobioleaching), the type of bacteria and time (day), while the recoveries of copper and ...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53226#.VLcsacnQrzE Author(s)    Ali Ahmadi , Mohammad Raouf Hosseini Affiliation(s) Department of Mining Engineering, Isfahan University of Technology, Isfahan, Iran . ABSTRACT Multiplicity of the chemical, biological, electrochemical and operational variables and nonlinear behavior of metal extraction in bioleaching environments complicate the mathematical modeling of these systems. This research was done to predict copper and iron recovery from a copper flotation concentrate in a stirred tank bioreactor using a fuzzy logic model. Experiments were carried out in the presence of a mixed culture of mesophilic bacteria at 35°  C, and a mixed culture of moderately thermophilic bacteria at 50°  C. Input variables were method of operation (bioleaching or electrobioleaching), the type of bacteria and time (day), while the recoveries of copper and ...