How it works
It consists of thin panels (a few centimetres thick) holding the culture, exposed to light on both faces and aerated from the base to mix and supply CO₂. The short distance the light must travel improves its use by all cells.
When it is used
It is common in research and in high-value biomass production where maximum photosynthetic efficiency and control are sought. Its compact geometry makes it easy to orient the panels towards the light and use space well.
Advantages
- +High photosynthetic efficiency (short light path)
- +High cell density
- +Compact, modular design
Limitations
- −High cost per unit volume
- −More demanding temperature control
- −Scaling by adding many modules
FAQ
Because light passes through a thin layer of culture, improving its use by all cells and allowing high densities.
By adding modules: many panels in parallel, which raises cost but keeps efficiency.
Sources
- Richmond, A. & Hu, Q. (eds.) (2013). Handbook of Microalgal Culture: Applied Phycology and Biotechnology. Wiley-Blackwell.
- Chisti, Y. (2007). Biodiesel from microalgae. Biotechnology Advances, 25(3), 294–306.
- Spolaore, P. et al. (2006). Commercial applications of microalgae. Journal of Bioscience and Bioengineering, 101(2), 87–96.
- Mata, T.M. et al. (2010). Microalgae for biodiesel production and other applications: A review. Renewable and Sustainable Energy Reviews, 14(1), 217–232.
Scientific outreach based on specialised literature. Scientific review: pending.