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Complex behavior between microplastic and antibiotic and their effect on phosphorus-removing Shewanella strain during wastewater treatment
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Researchers examined how microplastics and antibiotics interact in wastewater treatment, finding that their combined stress disrupted phosphorus removal by Shewanella bacteria through altered adsorption behavior and metabolic interference.
Owing to their widespread application and use, microplastics (MPs) and antibiotics coexist in the sewage treatment systems. In this study, the effects and mechanisms of the combined stress of MPs and ciprofloxacin (CIP) on phosphorus removal by phosphorus-accumulating organisms (PAOs) were investigated. This study found that the four types of MPs and CIP exhibited different antagonistic effects on the inhibition of phosphorus removal by PAO. MPs reduced the effective concentration of CIP through adsorption and thus reduced its toxicity, which was affected by the biofilms on MPs. In addition, CIP may cause PAO to produce more extracellular polymeric substances, which reduces the physical and oxidative stress of MPs on PAO. Our results are helpful as they increase the understanding of the effects of complex emerging pollutants in sewage systems and propose measures to strengthen the biological phosphorus removal in sewage treatment processes.
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(Micro) nanoplastics promote the risk of antibiotic resistance gene propagation in biological phosphorus removal system
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The presence of microplastics and nanoplastics in a biological phosphorus removal system used in wastewater treatment promoted the dissemination of antibiotic resistance genes, while also disrupting phosphorus removal efficiency. The study links micro- and nanoplastic contamination of treatment systems to both reduced process performance and increased antimicrobial resistance risk.
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Researchers characterized microplastics in wastewater and investigated their interactions with antibiotics, examining how microplastic surfaces adsorb antibiotic compounds and the implications for antibiotic transport and dissemination in wastewater treatment systems.
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Scientists found that plastic pollution and a common antibiotic interact in surprising ways inside wastewater treatment plants, sometimes making pollution's harmful effects worse, sometimes better, depending on the plastic type and how weathered it is. This matters because wastewater treatment protects our water supplies, and understanding these hidden chemical interactions helps engineers keep treatment systems working properly as plastic and drug pollution keeps rising.
Synergistic Pollution: Interactions Among Polyethylene, Surfactants, and Antibiotics in an Aquatic Environment
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Researchers investigated synergistic pollution effects among polyethylene microplastics, surfactants, and antibiotics in aquatic systems, finding that co-presence enhanced the environmental persistence and bioavailability of antibiotics beyond what microplastics or surfactants caused individually.
Bacterial dynamics of the plastisphere microbiome exposed to sub-lethal antibiotic pollution.
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This study investigated how sub-lethal antibiotic concentrations in water interact with microplastic-associated biofilm communities (the plastisphere), finding that combined pollution alters bacterial dynamics and may contribute to antibiotic resistance selection in aquatic environments.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.