Department of Environmental Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Wólczańska 171/173, 90-530, Lodz, Poland; Interdisciplinary Doctoral School, Lodz University of Technology, Żeromskiego 116, 90-924, Lodz, Poland.
Department of Environmental Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Wólczańska 171/173, 90-530, Lodz, Poland.
J Environ Manage. 2023 Oct 15;344:118445. doi: 10.1016/j.jenvman.2023.118445. Epub 2023 Jun 22.
A comparative study was carried out to assess the effect of two light sources on microalgae cultivation and the treatment of liquid digestate. The R1 photobioreactor operated with LED lightning allowed to achieve moderate nutrient removal rates whereas soluble COD (Chemical Oxygen Demand) was reduced in 90%. After switching this reactor into sunlight, the removal rate of phosphates increased to 66%. However, the greatest removal rate of both nutrients and sCOD of up to 93% was observed in the R2 photobioreactor operated only under sunlight. Microglena sp. was the dominant algae growing in the R1 reactor, and the main bacteria families detected were Chitinophagaceae, Sphingomonadaceae and Xanthobacteraceae. In contrast, Tetradesmus obliquus dominated in the R2 reactor and Rhodanobacteraceae, Chitinophagaceae and A4b were predominant bacteria in this run. Furthermore, much greater biomass productivity as well as overall biomass density was observed in the R2 photobioreactor cultivated exclusively with solar lightning.
进行了一项比较研究，以评估两种光源对微藻培养和液体消化液处理的影响。使用 LED 照明的 R1 光生物反应器能够实现适度的养分去除率，而可溶性 COD（化学需氧量）则降低了 90%。将该反应器切换到阳光后，磷酸盐的去除率增加到 66%。然而，在仅在阳光照射下运行的 R2 光生物反应器中观察到最大的养分和 sCOD 去除率，达到 93%。在 R1 反应器中，优势藻类为微绿藻属，检测到的主要细菌科为几丁质分解菌科、鞘氨醇单胞菌科和黄杆菌科。相比之下，在 R2 反应器中，斜生栅藻属占优势，而在该运行中，优势细菌为节杆菌科、几丁质分解菌科和 A4b。此外，在仅用太阳光培养的 R2 光生物反应器中观察到更高的生物量生产力和总体生物量密度。
