Biokinetic characteristics of novel N2O-reducing bacteria: Towards mitigation of N2O emissions from WWTPs

新型 N2O 还原菌的生物动力学特征：减少污水处理厂 N2O 排放

• 批准号: 21J10206
• 负责人: 周 裔文
• 金额: $ 0.96万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-28 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21J10206/
• 关键词: Nitrogen cycle; Denitrification; Nitrous-oxide reducers; N2O consumption activity; Phenotype; Genotype; N2O reducing bacteria; N2O production; N2O consumption; Carbon source

Harnessing of nitrous oxide reducers (N2OR), harbored nosZ gene, can significantly reduce N2O emissions from nitrogen cycles, and deserves more attention. We applied chemostat to enrich N2OR and systematically studied on biokinetic characterizations of mixed cultures, and revealing the dominant species for consuming N2O. The results demonstrated that the mixed culture possessed great potential of N2O consumption activities. Additionally, our results highlighted that the highly active oxygen microbial consortium can be attained by a chemostat fed with methanol. Those findings provide new insights into achieving N2O emissions mitigation by N2OR. In future work, we will continue to focus on how novel N2OR can be applied to practical engineering applications to achieve N2O emission mitigation.

利用含有nosZ基因的一氧化二氮还原剂(N2OR)可以显著减少氮循环中N2O的排放，值得更多的关注。我们应用恒化器来富含N2OR，并对混合培养的生物动力学特性进行了系统的研究，揭示了消耗N2O的优势物种。结果表明，混合培养具有很大的N2O消耗活动潜力。此外，我们的结果强调了高活性氧微生物联合体可以通过添加甲醇的恒化器来获得。这些发现为通过N2OR实现N2O减排提供了新的见解。在未来的工作中，我们将继续关注如何将新型N2OR应用于实际工程应用，以实现N2O减排。

项目成果

Effects of free nitrous acid combined with alkyl polyglucoside on short-chain fatty acids production from waste activated sludge anaerobic fermentation and fermentation liquor for polyhydroxyalkanoates synthesis

游离亚硝酸与烷基多糖苷联用对废活性污泥厌氧发酵产短链脂肪酸及聚羟基脂肪酸酯合成发酵液的影响

• DOI: 10.1016/j.jwpe.2023.103515
• 发表时间: 2023
• 期刊: Journal of Water Process Engineering
• 影响因子: 7
• 作者: Wu Yuqi;Song Xiulan;Zhang Yuhong;Liu Yaohui;Su Bingqin;Zhou Yiwen
• 通讯作者: Zhou Yiwen

Physiological traits of N2O-reducing bacteria in a chemostat bioreactor toward N2O sinks

恒化生物反应器中 N2O 还原菌对 N2O 汇的生理特性

• 发表时间: 2023
• 作者: 安部清尚;他 KamLAND コラボレーション;Zhou Yiwen
• 通讯作者: Zhou Yiwen