Structural and Functional Changes in Biological Systems of Wastewater Treatment Plants Induced by Bicyclic
Weronika Magdalena Jabłońska1, Urszula Guzik1, Danuta Wojcieszyńska1
1Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Science, University of Silesia in Katowice, Jagiellońska 28, 40-032 Katowice, Poland.
Abstract:
The increasing presence of pharmaceutical compounds in aquatic environments poses a significant challenge for wastewater treatment systems worldwide. Among these emerging contaminants, bicyclic non-steroidal anti-inflammatory drugs (NSAIDs) are particularly concerning due to their high consumption, partial metabolism, and long-lasting persistence in wastewater. This review was prepared critically based on popular databases such as PubMed and the Google Scholar website, and using the modern Nested Knowledge platform. The bibliometric analysis was performed using the VosViewer program with the keywords co-occurrence method. The review aims to systematically compile and synthesize current knowledge on the impact of bicyclic non-steroidal anti-inflammatory drugs (NSAIDs) on biological wastewater treatment systems, with particular emphasis on activated sludge. It discusses how these compounds influence microbial community composition, metabolic activity, sludge structure, and overall treatment performance. Furthermore, the distribution of these contaminants in the environment and their degradation efficiency were analyzed. By integrating evidence from both laboratory and industrial studies, this article provides a comprehensive perspective on the environmental risks posed by bicyclic NSAIDs. Our findings also underscore the urgent need for systematic monitoring and adaptive management to mitigate the ecological impact of these widely used pharmaceuticals in the future.
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