Medizinische Universität Graz - Research portal
Selected Publication:
SHR Neuro Cancer Cardio Lipid Metab Microb
Zou, W; Xue, B; Zhi, W; Zhao, T; Yang, D; Qiu, Z; Shen, Z; Li, J; Zhang, B; Wang, J.
Effects of antibiotic resistance genes on the performance and stability of different microbial aggregates in a granular sequencing batch reactor.
J Hazard Mater. 2016; 304: 343-51.
Doi: 10.1016/j.jhazmat.2015.10.057
Web of Science
PubMed
FullText
FullText_MUG
- Co-authors Med Uni Graz
- Zhao Tianyu
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- Abstract:
- Antibiotic resistance genes (ARGs) have emerged as key factors in wastewater environmental contaminants and continue to pose a challenge for wastewater treatment processes. With the aim of investigating the performance of granular sludge system when treating wastewater containing a considerable amount of ARGs, a lab-scale granular sequencing batch reactor (GSBR) where flocculent and granular sludge coexisted was designed. The results showed that after inoculation of donor strain NH4(+)-N purification efficiency diminished from 94.7% to 32.8% and recovered to 95.2% after 10 days. Meanwhile, RP4 plasmid had varying effects on different forms of microbial aggregates. As the size of aggregates increased, the abundance of RP4 in sludge decreased. The residence time of RP4 in granules with particle size exceeding 0.9 mm (14 days) was far shorter than that in flocculent sludge (26 days). Therefore, our studies conclude that with increasing number of ARGs being detected in wastewater, the use of granular sludge system in wastewater treatment processes will allow the reduction of ARGs transmissions and lessen potential ecological threats.
- Find related publications in this database (using NLM MeSH Indexing)
- Bacteria - genetics
- Bioreactors - administration & dosage
- DNA, Bacterial - genetics
- DNA, Ribosomal - genetics
- Drug Resistance, Microbial - genetics
- Genes, Bacterial - administration & dosage
- Plasmids - administration & dosage
- Waste Disposal, Fluid - administration & dosage
- Find related publications in this database (Keywords)
- Antibiotic resistance genes
- Treatment performance
- Granular sequencing batch reactor
- Microbial aggregates
- Granule size