The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment

Autor: Ziqi Zhang, Zhinan Xu, Xiangrong Wang
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Environment International, Vol 176, Iss , Pp 107964- (2023)
Druh dokumentu: article
ISSN: 0160-4120
DOI: 10.1016/j.envint.2023.107964
Popis: The impact of antibiotics on methane (CH4) release from sediment involves both CH4 production and consumption processes. However, most relevant studies lack a discussion of the pathways by which antibiotics affect CH4 release and do not highlight the role played by the sediment chemical environment in this influence mechanism. Here, we collected field surface sediments and grouped them with various antibiotic combination concentration gradients (50, 100, 500, 1000 ng g−1) under a 35-day indoor anaerobic constant temperature incubation. We found that the positive effect of antibiotics on sediment CH4 release potential appeared later than the positive effect on sediment CH4 release flux. Still, the positive effect of high-concentration antibiotics (500, 1000 ng g−1) occurred with a lag in both processes. Also, the positive effect of high-concentration antibiotics was significantly higher than low-concentration antibiotics (50, 100 ng g−1) in the later incubation period (p
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