annual-biotechnology-2017-posters-abstracts

16 / 23

Page 56
alliedacademies
August 17-18, 2017 | Toronto, Canada
ANNUAL BIOTECHNOLOGY CONGRESS
Ann Biol Sci, 2017
ISSN: 2348-1927
The abuse of antibiotics has raised the prevalence of
antibiotic resistance, and the high frequency of antibiotic
resistance will be a serious global health concern. Landfill
is the primary treatment for municipal solid waste, and the
generated leachate will be the important hotspot of the
antibiotics and antibiotic resistant genes (ARGs). Until now,
no effective on-site treatment has been put forward for
preventing ARGs dissemination during leachate treatment.
Herein, the aged refuse bioreactor was employed to
remove antibiotics and ARGs from leachate, and the great
removal performance was observed. For the detected
antibiotics, the total removal efficiency was about 76.75%,
and sulfanilamide and macrolide were removed with high
efficiencies (>80%). Among the target ARGs, tetracycline
and macrolide resistance genes (tetM, tetQ and ermB)
were eliminated with 1.2-2.0 orders of magnitude. The
occurrences of ARGs did not correlate with physicochemical
parameters, but closely linked to the variations of the
bacterial community structure. Redundancy analysis (RDA)
indicated the significant correlations between four genera
and the distribution of ARGs, which implied that these key
genera (including potential pathogens) drove the ARGs
removal. Furthermore, the hydraulic loading test confirmed
that the aged refuse bioreactor was capable of achieving
high removal efficiencies even under shock loading and for
the higher loading it was negative for the proliferations of
potential ARGs hosts. This study suggested that aged refuse
bioreactor could be a promising way for antibiotics and ARGs
on-site removal from leachate.
e:
On-site removal of antibiotics and antibiotic resistant genes from leachate by aged refuse bioreactor:
effects of microbial community and operational parameters
Bing Xie and Yinglong Su
East China Normal University, China
Ann Biol Sci, 2017, 5:3
DOI: 10.21767/2348-1927-C1-003