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Stochastic simulation of growth curves of Acidithiobacillus ferrooxidans

  • Yang Yu 
  • Peng Hong 
  • Qiu Guan-zhou 
  • Liu Jian-she 
  • Hu Yue-hua Email author
Article

Abstract

To reveal the low growth rate of Acidithiobacillus ferrooxidans, a stochastic growth model was proposed to analyze growth curves of these bacteria in a batch culture. An algorithm was applied to simulate the bacteria population during lag and exponential phase. The results show that the model moderately fits the experimental data. Further, the mean growth constant (K) of growth curves is obtained by fitting the logarithm of the simulating population data versus the generation numbers with the different initial population number (N0) and initial mean activity of population (A0). When N0 is 300 and 700 respectively, the discrepancy of K value is only 0.91%, however, A0 is 0.34 and 0.38 respectively, the discrepancy of K value is 19.53%. It suggests that the effect of A0 on the lag phase exceeds N0, though both parameters could shorten the lag phase by increasing their values.

Key words

Acidithiobacillus ferrooxidans stochastic simulation growth curves lag phase 

CLC number

Q935 

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Copyright information

© Science Press 2001

Authors and Affiliations

  • Yang Yu 
    • 1
  • Peng Hong 
    • 1
  • Qiu Guan-zhou 
    • 1
  • Liu Jian-she 
    • 1
  • Hu Yue-hua 
    • 1
    Email author
  1. 1.School of Minerals Processing and BioengineeringCentral South UniversityChangshaChina

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