EFFECT OF CO2 CONCENTRATION ON SIMULTANEOUS PURIFICATION OF BIOGAS SLURRY AND BIOGAS BY MICROALGAE-FUNGI CO-CULTURE TECHNOLOGY
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摘要: 以微藻-真菌(小球藻-灵芝菌)共生体系为研究对象,并在2种浓度(10-7,10-9 mol/L)合成独角金内酯(GR24)的诱导下,探究6种CO2浓度对该体系同步净化沼液和沼气的影响。在GR24的诱导下,微藻-真菌系统的代谢和微藻的光合作用增强,使藻-菌共生体快速生长,进一步增强了系统的净化性能。此外,GR24通过提高微藻细胞碳酸酐酶活性,增强了共培养体系的CO2去除性能。结果表明:最佳的GR24浓度为10-9 mol/L,最适宜藻-菌共生体系的CO2浓度为45%,在此最优条件下,小球藻-灵芝菌共生体系对沼液的COD、TN和TP的平均去除率分别为(83.37±8.04)%、(82.07±7.74)%和(85.43±8.26)%,沼气中CO2的平均去除率为(62.07±5.94)%。Abstract: In this paper, the microalgae-fungus (Chlorella-Ganoderma) symbiotic system was chosen as the research object, and the effects of different CO2 concentrations on simultaneous purification of biogas slurry and biogas were investigated under the induction of two concentrations of synthetic unicolactone (GR24, 10-7, 10-9 mol/L). Under the induction of GR24, the metabolism and photosynthesis of microalgae in the microalgae-fungal system were enhanced, which made the algal-bacterial symbiosis grow rapidly and further enhanced the purification performance of the system. In addition, GR24 enhanced CO2 removal performance of the co-culture system by increasing the activity of carbonic anhydrase in microalgae cells. The results showed that the optimal GR24 concentration was 10-9 mol/L, and the CO2 concentration was 45%. Under these optimal conditions, the average removal rates of COD, TN and TP were (83.37±8.04)%, (82.07±7.74)% and (85.43±8.26)%, respectively, and the average removal rate of CO2 in biogas was (62.07±5.94)%.
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Key words:
- Chlorella vulgaris /
- Ganoderma lucidum /
- co-culture system /
- strigolactone /
- removal performance
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