We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Elimination of antibiotic-resistant bacteria and resistance genes by earthworms during vermifiltration treatment of excess sludge.
- Authors
Xing, Meiyan; Zhao, Ran; Yang, Gege; Li, Zhan; Sun, Yuzhu; Xue, Zitao
- Abstract
Vermifiltration (VF) and a conventional biofilter (BF, no earthworm) were investigated by metagenomics to evaluate the removal rates of antibiotic-resistant bacteria (ARB), antibiotic resistance genes (ARGs), and class 1 integron-integrase (intI1), as well as the impact mechanism in combination with the microbial community. According to the findings of qPCR and metagenomics, the VF facilitated greater removal rates of ARGs (78.83% ± 17.37%) and ARB (48.23% ± 2.69%) than the BF (56.33% ± 14.93%, 20.21% ± 6.27%). Compared to the control, the higher biological activity of the VF induced an increase of over 60% in the inhibitory effect of earthworm coelomic fluid on ARB. The removal rates of ARGs by earthworm guts also reached over 22%. In addition, earthworms enhanced the decomposition of refractory organics, toxic, and harmful organics, which led to a lower selective pressure on ARGs and ARB. It provides a strategy for reducing resistant pollution in sewage treatment plants and recognizing the harmless stability of sludge.
- Subjects
DRUG resistance in bacteria; BACTERIAL genes; SEWAGE disposal plants; EARTHWORMS; MICROBIAL communities
- Publication
Environmental Science & Pollution Research, 2024, Vol 31, Issue 5, p7853
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-023-31287-w