Xu Bing, Zhao Yongjun, Zhao Chunzhi, Wei Jing
School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China.
College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, 314001, People's Republic of China.
Environ Sci Pollut Res Int. 2022 Dec;29(60):91345-91355. doi: 10.1007/s11356-022-22165-y. Epub 2022 Jul 27.
Owing to the high carbon dioxide (CO)-fixation efficiency, microalgae-based technology has been widely used for biogas purification. The present study explored the effect of CO concentration on biogas purification by an algal-fungal-bacterial symbiotic system. Two algal-fungal-bacterial symbiotic systems were cultivated to purify four simulated biogas samples with different CO concentrations. The results showed that GR24, a synthetic analog of strigolactone, stimulated the growth of the algal-fungal-bacterial symbiotic system. The optimal CO concentration for the purification of the simulated biogas was 45% (V/V), and the optimal symbiotic system was Chlorella vulgaris-Ganoderma lucidum-endophytic bacteria-GR24. The maximum chemical oxygen demand (COD; 82.61 ± 7.73%), total nitrogen (TN; 81.36 ± 7.97%), total phosphorus (TP; 85.69 ± 8.19), and CO (69.23 ± 6.56%) removal efficiencies were detected with the addition of 10 M GR24 to the C. vulgaris-G. lucidum-endophytic bacterial symbiotic system. These findings confirmed the effect of CO concentration on the purification of biogas by the algal-bacterial symbiotic system. The study provides a theoretical basis for further research on the treatment of wastewater and biogas.
由于微藻技术具有较高的二氧化碳（CO）固定效率，基于微藻的技术已被广泛用于沼气净化。本研究探讨了CO浓度对藻-菌-真菌共生系统净化沼气的影响。培养了两种藻-菌-真菌共生系统，以净化四种不同CO浓度的模拟沼气样品。结果表明，独脚金内酯的合成类似物GR24促进了藻-菌-真菌共生系统的生长。净化模拟沼气的最佳CO浓度为45%（V/V），最佳共生系统是普通小球藻-灵芝-内生细菌-GR24。在普通小球藻-灵芝-内生细菌共生系统中添加10 M GR24时，检测到最大化学需氧量（COD；82.61±7.73%）、总氮（TN；81.36±7.97%）、总磷（TP；85.69±8.19）和CO（69.23±6.56%）去除效率。这些发现证实了CO浓度对藻-菌共生系统净化沼气的影响。该研究为进一步研究废水和沼气处理提供了理论依据。
