Biotechnology and Bioprocess Engineering

, Volume 17, Issue 1, pp 93–99

In situ carbon supplementation in large-scale cultivations of Spirulina platensis in open raceway pond

  • Yilu Bao
  • Ming Liu
  • Xia Wu
  • Wei Cong
  • Zhengxiang Ning
Research Paper

DOI: 10.1007/s12257-011-0319-9

Cite this article as:
Bao, Y., Liu, M., Wu, X. et al. Biotechnol Bioproc E (2012) 17: 93. doi:10.1007/s12257-011-0319-9

Abstract

The objective of this study was to estimate the CO2 absorptivity provided by an in situ carbon supply system using a photosynthetic culture of the cyanobacterium Spirulina platensis in an open raceway pond. The effects of initial total carbon concentrations (ranging from 0 to 0.1 mol/L), suspension depths (ranging from 5 to 20 cm) and pH values (ranging from 8.9 to 11.0) on the CO2 absorptivity were studied. The results indicated that CO2 absorptivity was positively correlated with pH value, negatively correlated with total carbon concentration, and only negligibly affected by the suspension depth. The optimum total carbon concentration range and pH range were 0.03 ∼ 0.09 mol/L and 9.7 ∼ 10.0, respectively. An average CO2 absorptivity of 86.16% and average CO2 utilization efficiency of 79.18% were achieved using this in situ carbon-supply system in large-scale cultivation of Spirulina platensis, with an initial total carbon concentration of 0.06 mol/L and pH value of 9.8. Our results demonstrated that this system could obtain a favorable CO2 utilization efficiency in outdoor, large-scale cultivation of Spirulina platensis in open raceway ponds.

Keywords

carbon supply systemCO2 absorptivityCO2 utilization efficiencySpirulina platensis

Copyright information

© The Korean Society for Biotechnology and Bioengineering and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Yilu Bao
    • 1
  • Ming Liu
    • 2
  • Xia Wu
    • 2
  • Wei Cong
    • 2
  • Zhengxiang Ning
    • 1
  1. 1.College of Light Industry and Food ScienceSouth China University of TechnologyGuangzhouChina
  2. 2.National Key Laboratory of Biochemical Engineering, Institute of Process EngineeringChinese Academy of SciencesBeijingChina