期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 378, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2019.05.109
关键词
Livestock waste; Pharmaceuticals; Antibiotic resistance genes; Anaerobic digestion; Reverse osmosis
资金
- Secretary of Universities and Research of the Counsel of Economy and Knowledge of the Catalan Government (AGAUR)
- Marie Curie Actions of the 7th RD EU Program
- project TRACE (EU Water Joint Programming Initiative) [JPIW2013-129]
- Spanish Ministry of Economy and Competitiveness [FJCI-2015-24616]
- Economy and Knowledge Department of the Catalan Government through Consolidated Research Groups [ICRA-ENV 2017 SGR 1124, BETA 2017 SGR 1677]
- Seleccio Deseuras, S.L
This study investigated, for the first time, the distribution and fate of 28 multiple-class veterinary pharmaceuticals and antibiotics (PhACs), and their corresponding antibiotic resistance genes (ARGs), in a full-scale on-farm livestock waste treatment plant. The plant relies on several technologies, including: anaerobic digestion (AD), solid-liquid separation, and two stages reverse osmosis (RO) of the liquid digestate. Tetracycline, fluoroquinolone, lincosamide and pleuromutilin antibiotics, together with anti-helmintic (flubendazole) and anti-inflammatory (flunixin) drugs were the most frequently detected compounds in livestock waste and in slaughterhouse sludge. This last fraction is used as co-substrate in the AD process and showed to be an important input source of PhACs and ARGs. In terms of treatment performance, AD exhibited moderate to low PhACs and ARGs reduction, while a large fraction (<50%) of the PhACs present in the digestate were distributed onto the solid fraction, after solid-liquid separation. Both solid and liquid digestates had relatively high copy numbers of ARGs. Finally, RO showed high rejection percentages for all PhACs (<90%), with concentrations in the low ng L-1 range in permeates, for most target PhACs. Nevertheless, moderate copy numbers of ARGs were detected in permeates.
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