研究生学术报告预告登记(开题、中期、答辩)

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报告人: 刘灵婕
学号: 1017214006
学院: 环境科学与工程学院
报告类型: 其他学术报告
日期: 20 October 2020
时间: 10:30 AM
地点: 腾讯会议视频报告
导师: 季民
题目: N-acyl-L-homoserine lactones release and microbial community changes in response to operation temperature in an anammox biofilm reactor
内容提要:

A lab-scale anammox biofilm reactor was run for 110 days with the operation temperature declining from 36 ℃ to 15 ℃. The total inorganic nitrogen removal efficiency showed a reduction from 80% to 66%, when the temperature declined from 36 ℃ to 15 ℃. This study observed that N-acyl-L-homoserine lactones (AHLs) concentrations, especially C8-HSL as well asC6-HSL, declined in water and also in biomass phases, and the result indicated that the microbial communication weakened. Microbial community analysis revealed that Candidatus Kuenenia wasthe predominant anammox bacteria during the whole operating period. The abundance of Candidatus Kuenenia increasedfrom 1.43% to 22.89%, with the temperature decreasing from 36 ℃ to 15 ℃. The correlation between microbial genus and AHLs was complicated. Overall, temperature decrease weakened the microbial communication so that the nitrogen removal performance deteriorated, and increasing the activity of anammox microorganisms might be an efficient way for performance improvement.

图片:
登记人: 刘灵婕
登记时间: Monday, 19 October 2020, 11:19 AM