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Applied Microbiology and Biotechnology

, Volume 99, Issue 19, pp 8309–8318 | Cite as

Effect of specific light supply rate on photosynthetic efficiency of Nannochloropsis salina in a continuous flat plate photobioreactor

  • Eleonora SforzaEmail author
  • Claudio Calvaruso
  • Andrea Meneghesso
  • Tomas Morosinotto
  • Alberto Bertucco
Bioenergy and biofuels

Abstract

In this work, Nannochloropsis salina was cultivated in a continuous-flow flat-plate photobioreactor, working at different residence times and irradiations to study the effect of the specific light supply rate on biomass productivity and photosynthetic efficiency. Changes in residence times lead to different steady-state cell concentrations and specific growth rates. We observed that cultures at steady concentration were exposed to different values of light intensity per cell. This specific light supply rate was shown to affect the photosynthetic status of the cells, monitored by fluorescence measurements. High specific light supply rate can lead to saturation and photoinhibition phenomena if the biomass concentration is not optimized for the selected operating conditions. Energy balances were applied to quantify the biomass growth yield and maintenance requirements in N. salina cells.

Keywords

Photosynthesis Photosynthetic efficiency Photoinhibition Energy balance Maintenance 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Supplementary material

253_2015_6876_MOESM1_ESM.pdf (234 kb)
ESM 1 (PDF 233 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of Industrial Engineering DIIUniversity of PadovaPadovaItaly
  2. 2.Department of BiologyUniversity of PadovaPadovaItaly

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