76 research outputs found
Antibiotic-resistant bacteria, antibiotic resistance genes, and antibiotic residues in wastewater from a poultry slaughterhouse after conventional and advanced treatments
Slaughterhouse wastewater is considered a reservoir for antibiotic-resistant bacteria and antibiotic residues, which are not sufficiently removed by conventional treatment processes. This study focuses on the occurrence of ESKAPE bacteria (Enterococcus spp., S. aureus, K. pneumoniae, A. baumannii, P. aeruginosa, Enterobacter spp.), ESBL (extended-spectrum β-lactamase)-producing E. coli, antibiotic resistance genes (ARGs) and antibiotic residues in wastewater from a poultry slaughterhouse. The efficacy of conventional and advanced treatments (i.e., ozonation) of the in-house wastewater treatment plant regarding their removal was also evaluated. Target culturable bacteria were detected only in the influent and effluent after conventional treatment. High abundances of genes (e.g., bla, bla, bla, bla, bla and mcr-1) of up to 1.48 × 10 copies/100 mL were detected in raw influent. All of them were already significantly reduced by 1–4.2 log units after conventional treatment. Following ozonation, mcr-1 and bla were further reduced below the limit of detection. Antibiotic residues were detected in 55.6% (n = 10/18) of the wastewater samples. Despite the significant reduction through conventional and advanced treatments, effluents still exhibited high concentrations of some ARGs (e.g., sul1, ermB and bla), ranging from 1.75 × 10 to 3.44 × 10 copies/100 mL. Thus, a combination of oxidative, adsorptive and membrane-based technologies should be considered
2,2'-BIPYRENYL AND PARA-TERPYRENYL - A NEW-TYPE OF ELECTRONICALLY DECOUPLED OLIGOARYLENE
MALDI-TOF mass spectrometry in polymer analytics .2. Molecular weight analysis of rigid-rod polymers
Differentiation of spoilage‐related bacteria using fibre‐coupled Raman spectroscopic mapping combined with multivariate statistics
Environmentally Benign Antioxidants: Lignin-based Materials for Food Packaging Applications
Study on microscopic homogeneity of polymeric candidate reference materials BAM H001 BAM H010 by means of synchrotron mu XRF and LA ICP MS
Synthesis of Insulated Single-Chain Semiconducting Polymers Based on Polythiophene, Polyfluorene, and b-Cyclodextrin
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