Semicontinuous cultivation of the cyanobacterium Spirulina platensis in a closed photobioreactor

Brazilian Journal of Chemical Engineering

C. C. Reichert²  C. O. Reinehr¹  J. A. V. Costa² 

[1] ,Fundação Universidade Federal do Rio Grande Departamento de Química Rio Grande RS ,Brazil

关键词: Biomass;    Semicontinuous cultivation;    Spirulina platensis;    Renewal rate;   

DOI  :  10.1590/S0104-66322006000100003

来源: SciELO

【 摘 要 】

The cultivation of photosynthetic microorganisms such as the cyanobacterium Spirulina platensis has been studied by researchers in many countries because these organisms can produce products with industrial potential. We studied the specific growth rate (µx, day-1) and productivity (Px, in mg/L/day of Spirulina platensis biomass, dry weight basis) of two S. platensis strains (LEB-52 and Paracas) growing in aerated semicontinuous culture in two-liter Erlenmeyer flasks for 90 days (2160 h) at 30°C under 2500 lux of illumination in a 12 h photoperiod. Independent of the S. platensis strain used we found that low biomass concentrations (0.50 g/L) and high renewal rates (50% v/v) resulted in a high specific growth rate (µx = 0.111 day-1) and high productivity (Px = 42.3 mg/L/day). These values are two to four times higher than those obtained in simple batch cultivation and indicate that the semicontinuous cultivation of S. platensis is viable.

【 授权许可】

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