Control of the Intensity of Light in a Photobioreactor for Cultivation of Microalgae

2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI:10.1109/CONCAPANXXXIX47272.2019.8976967

Diego Porras-Mahecha, C. Garzón‐Castro, Ximena Hurtado, Francisco Gómez

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Abstract

Microalgae are microorganism used for the industrial production of high value compounds. These can be cultivated in closed systems called photobioreactors. In PBR is possible to control the conditions of the culture, with the purpose of increasing the production of biomass or metabolites. The relation between the conditions of growth with the light intensity is essential for the increase of biomass. This paper describes the application of a Proportional-Integral-Derivative controller to control the light intensity within the broth in a batch culture of the Acutodesmus obliquus (Scenedesmus obliquus UTEX 393). The performance of the PID controller was tested with laboratory-level experiments using violet light. In the experiments, conventional lighting operation was compared with constant lighting inside the broth. The experimental results showed an increase in the percentage of lipid production compared to cultures where the intensity of light was not constant (conventional lighting).

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微藻培养光生物反应器的光强控制

微藻是一种用于工业生产高价值化合物的微生物。它们可以在称为光生物反应器的封闭系统中培养。在PBR中，可以控制培养条件，以增加生物量或代谢物的产量。生长条件与光照强度的关系对生物量的增加至关重要。本文介绍了比例-积分-导数控制器在分批培养斜尖蚌(Scenedesmus obliquus UTEX 393)培养液光强控制中的应用。通过紫光实验对PID控制器的性能进行了测试。在实验中，将常规光照操作与肉汤内恒定光照操作进行了比较。实验结果表明，与光强度不恒定(传统照明)的培养相比，脂质生产百分比有所增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)

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