Chih Ming Su1, Hsin Ta Hsueh2, Chi Ming Tseng3, Dah Tong Ray3, Yun Hwei Shen3, Hsin Chu 1

  • 1 Department of Environmental Engineering and Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan
  • 2 Sustainable Environment Research Laboratories, National Cheng Kung University, Tainan 701, Taiwan
  • 3 Department of Resources Engineering, National Cheng Kung University, Tainan 701, Taiwan

Received: September 6, 2016
Revised: April 15, 2017
Accepted: May 21, 2017
Download Citation: ||https://doi.org/10.4209/aaqr.2016.09.0386  

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Cite this article:
Su, C.M., Hsueh, H.T., Tseng, C.M., Ray, D.T., Shen, Y.H. and Chu, H. (2017). Effects of Nutrient Availability on the Biomass Production and CO2 Fixation in a Flat Plate Photobioreactor. Aerosol Air Qual. Res. 17: 1887-1897. https://doi.org/10.4209/aaqr.2016.09.0386


HIGHLIGHTS

  • Biomass productivity was 138.7 mg L–1 h–1 under 2,000 µE m–2 s–1 illumination.
  • The great CO2 fixation rate was 221.5 mg L–1 h–1.
  • A new medium was developed for thermophilic cyanobacteria.
  • Nutrients availability affect CO2 fixation and bioenergy production potential.

 

ABSTRACT


A thermophilic cyanobacterium named Thermosynechococcus CL–1 (TCL–1) was cultivated in the flat plate photobioreactors under strong illumination with dense culture to examine the effects of nutrient concentrations on the biomass production, CO2 fixation, and the potential as the feedstock for bioethanol production. The results show that concentrations of Na+, NO3, and CaCl2•2H2O, should be decreased, but the MgSO4•7H2O concentrations should be enhanced to increase the biomass productivity or persistence of the growth. Most of the carbon contents in TCL–1 remain stable, about 40%, under various nutrient levels. In addition, the Su and Chu’s medium was reorganized by picking up the nutrient concentrations resulted in the great biomass production. The adoption of the new medium for cultivating TCL–1 exhibits the great biomass productivity, CO2 fixation rate, and glycogen productivity at 138.7, 221.5, and 75.9 mg L–1 h–1, respectively, under 2,000 µE m–2 s–1 illumination in the 1.5 cm light path flat plate photobioreactors. The high biomass productivity, CO2 fixation and glycogen productivity indicate the use of Su and Chu’s medium exhibits high potential for applying TCL–1 in CO2 fixation and bioethanol production potential in the flat plate phptobioreactors.


Keywords: Thermosynechococcus; Nutrient; Flat Plate Photobioreactor; CO2 Fixation; Glycogen; Dense culture


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