Microalgal kinetics — a guideline for photobioreactor design and process development
Microalgal kinetics — a guideline for photobioreactor design and process development
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微藻动力学——光生物反应器设计和工艺开发指南
DOI：
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发表时间：
2019
影响因子：
2.7
通讯作者：
C. Posten
中科院分区：
文献类型：
--
作者：
Kira Schediwy;A. Trautmann;C. Steinweg;C. Posten
动力学通常描述依赖于底物浓度的生物（化学）反应速率。微藻的动力学通常改编自异养生物，并且缺乏机械基础，例如用于光捕获。使用和理解动力学方程作为细胞内机制的表示对于合理比较和模拟生长行为是必不可少的。将生长动力学总结在一个方程中并不能产生可靠的模型。分段线性或有理函数可以模拟光合作用的辐射响应曲线，但不能代表光合作用的机制。我们的建模方法包括光合自养生长的物理和动力学模块与机械的基础从文献中提取。将光子模型分成具有独立参数的光分布、光吸收和光合糖生产模块，允许在不同反应器设计之间转移动力学。除其他外，连续的增加取决于营养物浓度。养分吸收动力学在很大程度上影响碳分配在审查化学计量范围内的细胞成分。连续的代谢步骤相互掩盖，要求最大值，这可以理解为生长的最小原则。这些基本模块需要明确区分，但可以根据工艺条件和研究进展进行修改或扩展。首先，动力学的讨论有助于理解生理情况，给出了参数值的范围。第二，动力学应用于光生物反应器的设计，但也用于产气和营养优化。这两个方面都有许多例子。最后，更全面和精确地测量动力学将有助于改进工艺开发。
Kinetics generally describes bio‐(chemical) reaction rates in dependence on substrate concentrations. Kinetics for microalgae is often adapted from heterotrophs and lacks mechanistic foundation, e.g. for light harvesting. Using and understanding kinetic equations as the representation of intracellular mechanisms is essential for reasonable comparisons and simulations of growth behavior. Summarizing growth kinetics in one equation does not yield reliable models. Piecewise linear or rational functions may mimic photosynthesis irradiance response curves, but fail to represent the mechanisms. Our modeling approach for photoautotrophic growth comprises physical and kinetic modules with mechanistic foundation extracted from the literature. Splitting the light submodel into the modules for light distribution, light absorption, and photosynthetic sugar production with independent parameters allows the transfer of kinetics between different reactor designs. The consecutive anabolism depends among others on nutrient concentrations. The nutrient uptake kinetics largely impacts carbon partitioning in the reviewed stoichiometry range of cellular constituents. Consecutive metabolic steps mask each other and demand a maximum value understandable as the minimum principle of growth. These fundamental modules need to be clearly distinguished, but may be modified or extended based on process conditions and progress in research. First, discussion of kinetics helps to understand the physiological situation, for which ranges of parameter values are given. Second, kinetics should be used for photobioreactor design, but also for gassing and nutrient optimization. Numerous examples are given for both aspects. Finally, measuring kinetics more comprehensively and precisely will help in improved process development.
不同驯化状态下微藻光合作用的半经验模型 - 在 N. gaditana 中的应用。
影响因子：
4.1
作者：
Bernardi A
通讯作者：
Bernardi A
影响因子：
6.5
作者：
Blache, Ulrich;Jakob, Torsten;Wilhelm, Christian
通讯作者：
Wilhelm, Christian