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首页> 外文期刊>Energy Conversion & Management >A multiwavelength model to improve microalgal productivity and energetic conversion in a red-blue light emitting diodes (LEDs) continuous photobioreactor
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A multiwavelength model to improve microalgal productivity and energetic conversion in a red-blue light emitting diodes (LEDs) continuous photobioreactor

机译：一种多波长模型，提高红蓝发光二极管（LED）连续光生物反应器中的微藻生产率和能量转换

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摘要

Irradiation with light emitting diodes (LEDs) is proposed as a method to increase the photoconversion efficiency in large-scale microalgal cultivation. Although several authors have reported the possibility of using colored LEDs in batch systems and for many species, the overall energy efficiency of a continuous system integrated with fine-tuned LED technology is still not available. In this work, the cyanobacterium Arthrospira maxima was cultivated under a R/B (red/blue) LED lamp at increasing light intensities, in order to study the effects of light quality on microalgal performances. Kinetic growth parameters were retrieved from respirometric tests and implemented in a mathematical model to examine the effects of process variables on microalgal growth and to predict maximum biomass productivity in the multi-wavelength spectrum employed, which was also included in the simulation tool. The efficiency of both photosynthetic and LEDs were examined for energy evaluation. It was found that integrating tailored LEDs in microalgal cultivation increases process efficiency by reducing light energy waste. Moreover, integrating tailored LEDs was also found to be more efficient than white LED source, due to their higher energetic efficiency.
机译：提出了具有发光二极管（LED）的照射作为提高大规模微藻栽培中光电转换效率的方法。虽然有几位作者报告了在批处理系统中使用彩色LED的可能性，但对于许多物种，仍然没有使用微调LED技术集成的连续系统的总能效。在这项工作中，在增加光强度的R / B（红色/蓝色）LED灯下培养蓝蓝杆间血管孢菌，以研究轻质质量对微藻性能的影响。从呼吸测定试验中检索动力学生长参数，并在数学模型中实现，以检查过程变量对微藻生长的影响，并预测所用的多波长谱中的最大生物量生产率，其也包括在模拟工具中。检查光合作用和LED的效率进行了能量评估。结果发现，通过减少光能浪费，将量身定制的LED集成在微藻培养中提高了工艺效率。此外，由于其较高的能量效率，还发现整合量身定制的LED比白色LED源更有效。

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