高丝氨酸
群体感应
厌氧氨氧化菌
亚硝酸盐
化学
生物化学
亚硝酸盐还原酶
硝酸还原酶
酶
氨单加氧酶
氨
硝酸盐
硝化作用
食品科学
反硝化
氮气
反硝化细菌
有机化学
基因
毒力
作者
Xiaojing Zhang,Han Zhang,Nan Zhang,Yongpeng Ma,Nan Liu,Guanglu Han,Qiong Wang
标识
DOI:10.1016/j.biortech.2023.128614
摘要
Anammox was proved having the quorum sensing ability, and several acylated homoserine lactones (AHLs) signal molecules were detected in the system. In this study, the impact of exogenous N-dodecanoyl homoserine lactone (C12-HSL) with different addition modes on the nitrogen removal, key enzymes' activity, and microbial revolution were investigated in Anammox system. Results showed that once-addition of C12-HSL had no obvious impact on Anammox. Daily-addition with 40 nM slightly improved the TN removal from 71.1 % to 74.5 %, while 80 and 200 nM significantly decreased it to 62.7 % and 61.8 %, respectively. The enzyme activity of ammonia monooxygenase increased from 0.015 to 0.068, nitrite reductase increased from 0.25 to 1.23, and nitrate reductase increased from 0.05 to 0.11 μg NO2--N mg-1 Protein min-1. Arenimonas abundance showed positive correlation with TN removal while Candidatus Kuenenia was continuously suppressed. C12-HSL was beneficial for partial nitrification, and it could be adopted for regulating the nitrite production.
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