Dual character of methane production improvement and antibiotic resistance genes reduction by nano-Fe2O3 addition during anaerobic digestion of swine manure
文献类型：期刊论文
| 作者 | Lu, Tiedong; Su, Tianming; Liang, Xuelian; Wei, Yuansong ; Zhang, Junya; He, Tieguang
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| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2022 |
| 卷号 | 376页码:134240-1-10 |
| 关键词 | Swine manure Anaerobic digestion Microbial community Antibiotic resistance genes |
| ISSN号 | 0959-6526 |
| 英文摘要 | In this study, the dual character of the methane production and fate of antibiotic resistance genes (ARGs) were evaluated after adding nano-Fe2O3 (NF) during anaerobic digestion (AD) of swine manure, concerning the different exposure times (ET). NF has a decreasing effect on methane production, and the inhibitory effect is proportional to the dosage. NF350 decreased the accumulative methane production by about 7.8% when the ET was 30 days due to the disruption of cellular integrity and the damage to the bacterial communities. Nonetheless, NF could improve the maximum specific methane production rate by up to 24.5% when the ET was shorter than 12 days. And the changes in the relative abundance of ARGs were proportional to the daily methane production at this stage. The addition of NF in a short time is helpful for methanogenic activities, which might be correlated with direct interspecies electron transfer (DIET). NF specifically enhanced the reduction of tetracycline resistance genes with antibiotic target protection (40.7%) and aminoglycoside resistance genes with antibiotic inactivation (34.0%) when the ET was 30 days. It was speculated that the specifical reduction was mainly due to that higher NF could produce the ROS (reactive oxygen species), down regulate key enzyme actions in phosphorylation, acetylization, and nucelotidylalation with antibiotic inactivation, and reduces the reduction of selective pressure for tetracycline. Environmental variables and microbial community were the major factors causing the changes of the ARGs by Structural equation models (SEM) and Procrustes analysis. These results illustrated that resonable NF addition could help to improve the accumulative methane production and reduce ARGs during AD of swine manure. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48447]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Chinese Academy of Sciences 2.University of Chinese Academy of Sciences, CAS 3.Helmholtz Association 4.Helmholtz Center for Environmental Research (UFZ) 5.Guangxi Academy of Agricultural Sciences 6.Research Center for Eco-Environmental Sciences (RCEES) |
| 推荐引用方式 GB/T 7714 | Lu, Tiedong,Su, Tianming,Liang, Xuelian,et al. Dual character of methane production improvement and antibiotic resistance genes reduction by nano-Fe2O3 addition during anaerobic digestion of swine manure[J]. JOURNAL OF CLEANER PRODUCTION,2022,376:134240-1-10. |
| APA | Lu, Tiedong,Su, Tianming,Liang, Xuelian,Wei, Yuansong,Zhang, Junya,&He, Tieguang.(2022).Dual character of methane production improvement and antibiotic resistance genes reduction by nano-Fe2O3 addition during anaerobic digestion of swine manure.JOURNAL OF CLEANER PRODUCTION,376,134240-1-10. |
| MLA | Lu, Tiedong,et al."Dual character of methane production improvement and antibiotic resistance genes reduction by nano-Fe2O3 addition during anaerobic digestion of swine manure".JOURNAL OF CLEANER PRODUCTION 376(2022):134240-1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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