Organic micro-pollutants (OMPs) are contaminants of emerging concern in wastewater treatment due to the risk of their proliferation into the environment, but their impact on the biological treatment process is not well understood. The purpose of this study is to examine the effects of the presence of OMPs on the core microbial populations of wastewater treatment. Two nanofiltration-coupled membrane bioreactors (aerobic and anaerobic) were subjected to the same operating conditions while treating synthetic municipal wastewater spiked with OMPs. Microbial community dynamics, gene expression levels, and antibiotic resistance genes were analyzed using molecular-based approaches. Results showed that presence of OMPs in the wastewater feed had a clear effect on keystone bacterial populations in both the aerobic and anaerobic sludge while also significantly impacting biodegradation-associated gene expression levels. Finally, multiple antibiotic-type OMPs were found to have higher removal rates in the anaerobic MBR, while associated antibiotic resistance genes were lower.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2016.07.036 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Application of the nitrogen-to-argon ratio to understand nitrogen transformation pathways in landfills under in-situ stabilization.
Waste Manag
January 2025
Delft University of Technology, Faculty of Civil and Geosciences Engineering, Stevinweg 1, 2628 CN Delft, the Netherlands.
The ratio of nitrogen (N) to argon (Ar) in landfill gas was compared to the atmospheric gas ratio to quantify the balance between N generating (anaerobic ammonium oxidation, denitrification) and N consuming (nitrogen fixation) processes on three landfills undergoing in-situ stabilization. In the aerated landfills, as much as 22% of the extracted N could be explained by net denitrification, with coexisting aerobic and anaerobic domains fostering nitrification-dependent denitrification. Nitrogen fixation was also occasionally observed.
View Article and Find Full Text PDFEffects of a β-glucan-enriched diet on biomarkers of oxidative stress, energy metabolism and lysosomal function in muscle tissue of European grayling ( L.).
J Vet Res
December 2024
Institute of Biology, Pomeranian University in Słupsk, 76-200 Słupsk, Poland.
Introduction: The grayling ( L.) has several advantages over other fish species that make it attractive for aquaculture and invest it with importance for food security. The study assessed the effects of a β-glucan-enriched diet on biomarkers of oxidative stress, energy metabolism and lysosomal function in muscle tissue of European grayling ( L.
View Article and Find Full Text PDFInteractive effects of salinity, redox, and colloids on greenhouse gas production and carbon mobility in coastal wetland soils.
PLoS One
January 2025
Environmental Molecular Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, United States of America.
Coastal wetlands, including freshwater systems near large lakes, rapidly bury carbon, but less is known about how they transport carbon either to marine and lake environments or to the atmosphere as greenhouse gases (GHGs) such as carbon dioxide and methane. This study examines how GHG production and organic matter (OM) mobility in coastal wetland soils vary with the availability of oxygen and other terminal electron acceptors. We also evaluated how OM and redox-sensitive species varied across different size fractions: particulates (0.
View Article and Find Full Text PDFA genome-scale metabolic model for the denitrifying bacterium Thauera sp. MZ1T accurately predicts degradation of pollutants and production of polymers.
PLoS Comput Biol
January 2025
Department of Pediatrics, University of California, San Diego, 9500 Gilman Drive, La Jolla, California, United States of America.
The denitrifying bacterium Thauera sp. MZ1T, a common member of microbial communities in wastewater treatment facilities, can produce different compounds from a range of carbon (C) and nitrogen (N) sources under aerobic and anaerobic conditions. In these different conditions, Thauera modifies its metabolism to produce different compounds that influence the microbial community.
View Article and Find Full Text PDFsp. nov., a potently antifungal bacterium isolated from moss.
Int J Syst Evol Microbiol
January 2025
Department of Microbiology, Institute of Plant and Microbial Biology, University of Zrich, Zurich, Switzerland.
A novel strain, 681, was isolated from a moss sample taken from the Chrutzelried woods in Canton Zürich, Switzerland. The strain showed potent activity against several fungi and oomycetes. It was affiliated to the genus by 16S rRNA gene sequence phylogeny.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!