Abstract In this paper the preparations are described to develop a production of oil rich microalgal biomass under south European conditions. Ten species were compared in shake flasks an incubator for potential production. Potential capacity was assayed as maximum total fatty acid (TFA) concentration and volumetric TFA productivity. ranged from 5 40% DW while productivity rate 0 204 mg L ?1 day...

This paper is devoted to the study of a one-dimensional optimal control problem of Lagrange type under periodic constraints. The system is governed by a Kolmogorov equation including a control term. We show that the set of initial conditions for which there exists a control such that the associated trajectory is periodic is an interval. Thanks to Pontryagin Maximum Principle, we characterize op...

In the current literature, the life cycle, technoeconomic, and resource assessments of microalgae-based biofuel production systems have relied on growth models extrapolated from laboratory-scale data, leading to a large uncertainty in results. This type of simplistic growth modeling overestimates productivity potential and fails to incorporate biological effects, geographical location, or culti...

BACKGROUND Genome-scale models (GSMs) are widely used to predict cyanobacterial phenotypes in photobioreactors (PBRs). However, stoichiometric GSMs mainly focus on fluxome that result in maximal yields. Cyanobacterial metabolism is controlled by both intracellular enzymes and photobioreactor conditions. To connect both intracellular and extracellular information and achieve a better understandi...

In this paper we predict and optimize the biomass surface productivity of microalgae in continuous culture under a constant light source. Surface biomass is identified as a key variable for assessing productivity: we provide both a mathematical and intuitive explanation. For reaching maximal productivities, biomass surface concentration must be such that growth at the culture bottom (assuming a...

Lipid productivity of Chlorella pyrenoidosa was studied in a customized laboratory scale photobioreactor. Lipid yield increased when C. pyrenoidosa was subjected to stress conditions like different nitrogen sources, light intensities and modes of cultivation. It was observed that the growth rate of C. pyrenoidosa was directly proportional to light intensity and nitrogen concentrations. Of the t...