The effect of photosynthesis time scales on microalgae productivity
The effect of photosynthesis time scales on microalgae productivity
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DOI：
10.1007/s00449-013-1031-2
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发表时间：
2014-01-01
影响因子：
3.8
通讯作者：
Bernard, Olivier
中科院分区：
文献类型：
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作者：
Hartmann, Philipp;Bechet, Quentin;Bernard, Olivier
微藻通常被视为潜在的生物燃料生产者。为了预测在所谓的跑道培养系统中可实现的生产率，必须考虑光合作用的动力学。特别是，抑制的动力学效应，由过量的光（光抑制）必须表示。我们提出了一个模型，同时考虑光合作用和生长动力学。该模型涉及三个不同的时间尺度。我们通过慢/快近似研究了该模型对不同频率脉动光的响应。因此，我们确定了三种不同的制度，为模型的简化表达式可以推导出来。这些表达式给出了生产力提高的暗示，这可以通过用更快的流体动力学刺激光合作用来预期。
Microalgae are often seen as a potential biofuel producer. In order to predict achievable productivities in the so called raceway culturing system, the dynamics of photosynthesis has to be taken into account. In particular, the dynamical effect of inhibition by an excess of light (photoinhibition) must be represented. We propose a model considering both photosynthesis and growth dynamics. This model involves three different time scales. We study the response of this model to fluctuating light with different frequencies by slow/fast approximations. Therefore, we identify three different regimes for which a simplified expression for the model can be derived. These expressions give a hint on productivity improvement which can be expected by stimulating photosynthesis with a faster hydrodynamics.