کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4996796 | 1368274 | 2017 | 10 صفحه PDF | دانلود رایگان |
- GO addition negatively influenced the methane production from swine manure.
- GO had little influence on the changes of microbial community.
- ARGs reduction was realized mainly at the acetogenesis and methanogenesis phase.
- Balance between the ARGs proliferation and ARGs destruction by GO existed.
- MRGs contributed most to the ARGs variation directly.
The role of graphene oxide (GO) on anaerobic digestion (AD) of swine manure concerning the performance, microbial community and antibiotic resistance genes (ARGs) reduction was investigated. Results showed that methane production was reduced by 13.1%, 10.6%, 2.7% and 17.1% at GO concentration of 5Â mg/L, 50Â mg/L, 100Â mg/L and 500Â mg/L, respectively, but propionate degradation was enhanced along with GO addition. Both bacterial and archaeal community changed little after GO addition. AD could well reduce ARGs abundance, but it was deteriorated at the GO concentration of 50Â mg/L and 100Â mg/L and enhanced at 500Â mg/L, while no obvious changes at 5Â mg/L. Network and SEM analysis indicated that changes of each ARG was closely associated with variation of microbial community composition, environmental variables contributed most to the dynamics of ARGs indirectly, GO influenced the ARGs dynamics negatively and (heavy metal resistance genes (MRGs)) influenced the most directly.
Journal: Bioresource Technology - Volume 245, Part A, December 2017, Pages 850-859