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Microbial kinetics of Clostridium termitidis on cellobiose and glucose for biohydrogen production
Maritza Gomez-Flores1, George Nakhla2,3, Hisham Hafez4
1Department of Chemical and Biochemical Engineering, Faculty of Engineering, University of Western Ontario, London, ON, N6A 5B9, Canada. mgomezf@uwo.ca.
Objective:
To determine Monod kinetics parameters (µmax, Ks, kd and YX/S) of the mesophilic H2 producer Clostridium termitidis grown on glucose and cellobiose by modeling in MATLAB.
Results:
Maximum specific growth rates (µmax) were 0.22 and 0.24 h(-1) for glucose and cellobiose respectively; saturation constants (Ks) were 0.17 and 0.38 g l(-1) respectively and the biomass yields (YX/S) were 0.26 and 0.257 g dry wt g(-1) substrate. H2 yields of 1.99 and 1.11 mol H2 mol(-1) hexose equivalent were also determined for glucose and cellobiose respectively.
Conclusion:
The microbial kinetics of this model microorganism will enhance engineering biofuel production applications.
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