Istituto per la Bioeconomia, CNR, Via Madonna del Piano 10, Sesto Fiorentino I-50019, Firenze, Italy; Centro de Investigación en Ciencias Del Mar y Limnologίa, Universidad de Costa Rica, San Pedro, San José 2060, Costa Rica.
Istituto per la Bioeconomia, CNR, Via Madonna del Piano 10, Sesto Fiorentino I-50019, Firenze, Italy.
Sci Total Environ. 2022 Oct 10;842:156840. doi: 10.1016/j.scitotenv.2022.156840. Epub 2022 Jun 21.
In this work, the performance of a vertical multiplate photobioreactor is analyzed and presented. The photobioreactor consisted of 20 vertical plates (1 m each) connected by manifolds and a working volume of 1300 L. The total area occupied (footprint) was 10 m, while the illuminated area was 40 m, therefore the ratio of illuminated area to volume ratio was about 30 m. The performance of the photobioreactor was evaluated using a culture of Synechocystis PCC 6803, circulated by a centrifuge pump. The results showed that the amount of light captured by the photobioreactor at a plate spacing of 0.5 m was 90.2 % of the light incident on the horizontal surface, while at a plate spacing of 1.0 m, 50.3 % was captured. The corresponding biomass yield, calculated based on the ground area occupied by the reactor, was 26.0 g m day and 7.2 g m day, when the plates were spaced at 0.5 m and 1.0 m respectively. Therefore, the light conversion efficiency calculated based on the ground area was significantly higher in the configuration with a plate spacing of 0.5 m, reaching 5.43 % based on PAR (photosynthetically active radiation), and 2.44 % based on solar radiation, giving a value 3.7 higher than when the plates were spaced 1.0 m apart. It was concluded that the light conversion efficiency might be further improved by reducing the plate spacing while also reducing the culture light path.
在这项工作中，分析并展示了垂直多板光生物反应器的性能。该光生物反应器由 20 个垂直板（每个 1 米）通过歧管连接而成，工作体积为 1300 升。总占地面积（占地面积）为 10 平方米，而受光面积为 40 平方米，因此受光面积与体积比约为 30 平方米。使用通过离心栗循环的 Synechocystis PCC 6803 培养物评估光生物反应器的性能。结果表明，在板间距为 0.5 m 的情况下，光生物反应器捕获的光量为入射到水平表面的光量的 90.2％，而在板间距为 1.0 m 的情况下，光量为 50.3％。基于反应器占用的地面面积计算的相应生物质产率分别为 26.0 g m day 和 7.2 g m day，当板间距分别为 0.5 m 和 1.0 m 时。因此，基于地面面积计算的光转换效率在板间距为 0.5 m 的配置下明显更高，基于 PAR（光合有效辐射）达到 5.43％，基于太阳辐射达到 2.44％，比板间距为 1.0 m 时高 3.7 倍。得出的结论是，通过减小板间距同时减小培养物光路，可以进一步提高光转换效率。
