Distribution and characteristic of nitrite-dependent anaerobic methane oxidation bacteria by comparative analysis of wastewater treatment plants and agriculture fields in northern China

PeerJ

article

Zhen Hu¹  Ru Ma¹ 

[1] School of Environmental Science and Engineering, Shandong University

关键词: Nitrite-dependent anaerobic methane oxidation;    Greenhouse gas;    Comparative analysis;    Distribution;    Northern China;   

DOI  :  10.7717/peerj.2766

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Nitrite-dependent anaerobic methane oxidation (n-damo) is a recently discovered biological process which has been arousing global attention because of its potential in minimizing greenhouse gases emissions. In this study, molecular biological techniques and potential n-damo activity batch experiments were conducted to investigate the presence and diversity of M. oxyfera bacteria in paddy field, corn field, and wastewater treatment plant (WWTP) sites in northern China, as well as lab-scale n-damo enrichment culture. N-damo enrichment culture showed the highest abundance of M. oxyfera bacteria, and positive correlation was observed between potential n-damo rate and abundance of M. oxyfera bacteria. Both paddy field and corn field sites were believed to be better inoculum than WWTP for the enrichment of M. oxyfera bacteria due to their higher abundance and the diversity of M. oxyfera bacteria. Comparative analysis revealed that long biomass retention time, low NH4+and high NO2−content were suitable for the growth of M. oxyfera bacteria.

【 授权许可】

CC BY