Use of phototrophic microorganisms in bioprocesses

Use of phototrophic microorganisms in bioprocesses

contact: jerome.hamelin_at_inrae.fr, kim.milferstedt_at_inrae.fr, robert.van-lis_at_inrae.fr

Light can be used by phototrophs as energy source and allows CO2 fixation in the system.

Ongoing research on phototrophs using modeling and experimental approaches

  • Understanding and optimizing physiological and metabolic responses of microalgae in relation to i)  dark fermentation effluents [1], ii)  the presence of bacteria or other microorganisms, iii)  algal culture conditions and iv)  algal species and their trophic mode 
  • Synergistic co-cultures of bacteria and microalgae for maximizing C/N/P recovery
  • Ecology of (static) photogranulation [2]
  • Engineering stable artificial syntrophic consortia of photogranules based on division of labor for aeration-free wastewater treatment [3,4]
  • Conversion of CH4 into value-added products by photogranules
  • Improving conversion efficiency of H2 and CO2 into single-cell protein by Phototrophic Purple Bacteria (PPB) [5]
  • Impact of Anaerobic digestion (AD) / Dark Fermentation (DF) effluents on PPB growth and on the quality of final products
  • Nitrogen fixation of PPB when grown with N2 as sole nitrogen source

Equipments for ecophysiology studies

Phototrophe1_2025

Physiological & morphological diversity of phototrophic microorganisms

Phototrophe2_2025

Environmental biorefinery bioprocesses integrating phototrophs

Phototrophe3_2025