Phototrophic process models

Chapter 3 is devoted to phototrophic processes modeling. The model approach includes the level of metaboHc fluxes and of the intracellular control. The appropriate balance equations and kinetics are outlined. The specific features, such as photosynthesis, carbon uptake, and carbon partitioning, are described. Dynamic description of the complex reactions of the cells to environmental changes is also discussed with some examples. The objective of this chapter is to give the basic biological background, to deduce, step by step, the model s governing equations, and to present simulation results with realistic parameter values. 

The model represents the most basic features of a phototrophic batch process. In the first phase, there are only small Hght gradients leading to a uniform illumination of all cells (Fig. 4). Light intensity is strong enough... 

The model of Jassby and Platt is reported to best describe of the photosynthetic response to light (Chalker, 1980 Jassby and Platt, 1976). In this chapter the model of Jassby and Platt will be used to evaluate microalgal growth in photobioreactors, but also the simpler Blackman model. The Blackman model can be easily solved analytically and is well suited to highl%ht and discuss the specific aspects of phototrophic production processes. Besides these two models there are alternative models. Two models which are frequently used are the model of Webb and a Monod model ... 

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