Issue 33, 2016

Enhanced antibiotic removal by the addition of bamboo charcoal during pig manure composting

Abstract

While composting is generally an effective way to minimize the adverse environmental impacts of manure prior to land application, some issues may also be introduced during compositing, such as the increased presence of recalcitrant antibiotic residues from feed additives. This study suggested that the addition of bamboo charcoal (BC) during pig manure composting was beneficial for the removal of three antibiotics (ciprofloxacin, chlorotetracycline, and norfloxacin). Addition of 9% (w/w) BC decreased the concentration of ciprofloxacin residues by 98.9% (from 1.85 to 0.02 mg kg−1 dry weight) in 45 days, and decreased the content of norfloxacin and chlorotetracycline below detection limits in less than 5 and 10 days, respectively. In comparison, without added BC, ciprofloxacin levels were decreased by only 82.7% (from 1.85 to 0.32 mg kg−1 dry weight) after 45 days of composting. This indicated that BC could enhance the removal of antibiotics during manure composting, thus reducing the risk of antibiotic residue runoff when composts are used in agriculture.

Graphical abstract: Enhanced antibiotic removal by the addition of bamboo charcoal during pig manure composting

Article information

Article type
Paper
Submitted
23 Dec 2015
Accepted
09 Mar 2016
First published
11 Mar 2016

RSC Adv., 2016,6, 27575-27583

Enhanced antibiotic removal by the addition of bamboo charcoal during pig manure composting

L. Wang, G. Chen, G. Owens and J. Zhang, RSC Adv., 2016, 6, 27575 DOI: 10.1039/C5RA27493A

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