文献类型： 外文期刊

作者： Wu, Zi-Fan ¹ ; Li, Zhao-Long ² ; Liu, Qing-Hua ³ ; Yang, Zhi-Man ¹ ;

作者机构： 1.Fujian Normal Univ, Coll Environm & Resource Sci, Coll Carbon Neutral Modern Ind, Fujian Key Lab Pollut Control & Resource Reuse, Fuzhou, Peoples R China

2.Fujian Acad Agr Sci, Inst Anim Husb & Vet Med, Fuzhou, Peoples R China

3.Fujian Agr & Forestry Univ, Coll Resources & Environm, Fuzhou, Peoples R China

关键词： acetate; interspecies electron transfer; magnetite; methane; microbial community structure; thermophilic anaerobic digestion

期刊名称：WATER SCIENCE AND TECHNOLOGY （ 影响因子：2.7； 五年影响因子：2.6 ）

ISSN： 0273-1223

年卷期： 2024 年 89 卷 1 期

页码：

收录情况： SCI

摘要： Using a batch thermophilic anaerobic system established with 60 mL serum bottles, the mechanism on how microbial enrichments obtained from magnetite-amended paddy soil via repeated batch cultivation affected methane production from acetate was investigated. Magnetite-amended enrichments (MAEs) can improve the methane production rate rather than the methane yield. Compared with magnetite-unamended enrichments, the methane production rate in MAE was improved by 50%, concomitant with the pronounced electrochemical response, high electron transfer capacity, and fast acetate degradation. The promoting effects might be ascribed to direct interspecies electron transfer facilitated by magnetite, where magnetite might function as electron conduits to link the acetate oxidizers (Anaerolineaceae and Peptococcaceae) with methanogens (Methanosarcinaceae). The findings demonstrated the potential application of MAE for boosting methanogenic performance during thermophilic anaerobic digestion.