Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology (IGA), Chinese Academy of Sciences (CAS), Changchun, 130012, PR China.
School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 200235, PR China.
Chemosphere. 2021 Oct;281:130791. doi: 10.1016/j.chemosphere.2021.130791. Epub 2021 May 12.
To realize the synchronous purification of raw biogas and biogas slurry, the algal-fungal symbiont pellets were cultivated by supplementing strigolactone (GR24) under different mixed LED light wavelengths. The optimal light intensity was proved to be red and blue in the ratio of 5:5. The symbionts treated with 10 M GR24 had the highest growth rate and mean daily productivity. The extracellular carbonic anhydrase activity and the content of chlorophyll were also affected by GR24 concentrations and mixed light wavelengths. With the induction of 10 M GR24, the maximum removal efficiency of chemical oxygen demand, total nitrogen, and total phosphorus reached 76.35 ± 6.87%, 78.77 ± 7.13% and 79.49 ± 7.43%, respectively. Besides, the CO removal efficiency reached 59.32 ± 5.19% when the concentration of GR24 was 10 M. This work will be beneficial for large-scale biogas slurry purification and biogas upgrading using co-cultivation of microalgae and fungi.
为了实现沼气和沼液的同步净化，在不同混合 LED 光波长下补充独脚金内酯（GR24）来培养藻菌共生体球。证明最佳光强为红光和蓝光的比例为 5:5。用 10 M GR24 处理的共生体具有最高的增长率和平均日生产力。细胞外碳酸酐酶活性和叶绿素含量也受到 GR24 浓度和混合光波长的影响。在 10 M GR24 的诱导下，化学需氧量、总氮和总磷的最大去除效率分别达到 76.35±6.87%、78.77±7.13%和 79.49±7.43%。此外，当 GR24 浓度为 10 M 时，CO 的去除效率达到 59.32±5.19%。这项工作将有利于利用微藻和真菌共培养进行大规模沼液净化和沼气升级。
