A Linear Programming Approach for Modeling and Simulation of Growth and Lipid Accumulation of Phaeodactylum tricornutum

Robert Dillschneider and Clemens Posten
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Robert Dillschneider: Department of Bioprocess Engineering, Institute of Engineering in Life Sciences, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, Karlsruhe D-76131, Germany
Clemens Posten: Department of Bioprocess Engineering, Institute of Engineering in Life Sciences, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, Karlsruhe D-76131, Germany

Energies, 2013, vol. 6, issue 10, 1-24

Abstract: The unicellular microalga Phaeodactylum tricornutum exhibits the ability to accumulate triacylglycerols to a high specific content when nutrients are limited in the culture medium. Therefore, the organism is a promising candidate for biodiesel production. Mathematical modeling can substantially contribute to process development and optimization of algae cultivation on different levels. In our work we describe a linear programming approach to model and simulate the growth and storage molecule accumulation of P. tricornutum . The model is based on mass and energy balances and shows that the organism realizes the inherent drive for maximization of energy to biomass conversion and growth. The model predicts that under nutrient limiting conditions both storage carbohydrates and lipids are synthesized simultaneously but at different rates. The model was validated with data gained from batch growth experiments.

Keywords: Phaeodactylum tricornutum; biofuels; lipid synthesis; modeling; simulation; linear programming; nitrate limitation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2013
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