BIOCORE-INRIA, BP93, 06902 Sophia-Antipolis Cedex, France.
Biotechnol Bioeng. 2012 Feb;109(2):415-25. doi: 10.1002/bit.23350. Epub 2011 Oct 21.
Coupling an anaerobic digester to a microalgal culture has received increasing attention as an alternative process for combined bioenergy production and depollution. In this article, a dynamic model for anaerobic digestion of microalgae is developed with the aim of improving the management of such a coupled system. This model describes the dynamics of inorganic nitrogen and volatile fatty acids since both can lead to inhibition and therefore process instability. Three reactions are considered: Two hydrolysis-acidogenesis steps in parallel for sugars/lipids and for proteins, followed by a methanogenesis step. The proposed model accurately reproduces experimental data for anaerobic digestion of the freshwater microalgae Chlorella vulgaris with an organic loading rate of 1 gCOD L(-1) d(-1). In particular, the three-reaction pathway allows to adequately represent the observed decoupling between biogas production and nitrogen release. The reduced complexity of this model makes it suitable for developing advanced, model-based control and monitoring strategies.
将厌氧消化器与微藻培养耦合作为一种联合生物能源生产和脱污染的替代工艺，已受到越来越多的关注。本文开发了一种微藻厌氧消化的动态模型，旨在改进这种耦合系统的管理。该模型描述了无机氮和挥发性脂肪酸的动力学，因为它们都可能导致抑制，从而导致过程不稳定。考虑了三个反应：两个水解-产酸步骤在平行进行，用于糖/脂质和蛋白质，然后是产甲烷步骤。所提出的模型准确地再现了在有机负荷率为 1 gCOD L(-1) d(-1)的条件下，对淡水微藻小球藻进行厌氧消化的实验数据。特别是，三反应途径可以很好地表示沼气产生和氮释放之间观察到的解耦。该模型的简化复杂性使其适用于开发先进的基于模型的控制和监测策略。
