| Sorption and desorption behavior of residual antidepressants and caffeine in freshwater sediment and sewage sludge |
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| 作者姓名： | Ismael Laurindo Costa Junior Christiane Schinneider Machado Adelmo Lowe Pletsch Yohandra Reyes Torres |
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| 作者单位： | Department of Chemistry,Federal University of Technology-Paraná (UTFPR),Medianeira,PR,Brazil;Department of Chemistry,State University of Midwest (UNICENTRO),Guarapuava,PR,Brazil |
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| 摘 要： | The use of antidepressants is widespread in modern times. Thus, they present a potential risk for ecosystems due to occurrence in domestic sewage containing unaltered metabolites and structures, even after the treatment plants have processed the sewage. The current research investigated the sorption and desorption of antidepressants(citalopram, venlafaxine, fluoxetine, sertraline, and amitriptyline) and caffeine from freshwater sediment and sewage sludge. The samples of freshwater sediment were ...
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| 关 键 词： | Emerging pollutants Drugs PERSISTENCE PARTITION MOBILITY SORPTION |
| 收稿时间： | 16 October 2020 |
Sorption and desorption behavior of residual antidepressants and caffeine in freshwater sediment and sewage sludge |
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| Ismael Laurindo Costa Junior,Christiane Schinneider Machado,Adelmo Lowe Pletsch,Yohandra Reyes Torres.Sorption and desorption behavior of residual antidepressants and caffeine in freshwater sediment and sewage sludge[J].International Journal of Sediment Research,2022,37(3):346-354. |
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| Authors: | Ismael Laurindo Costa Junior Christiane Schinneider Machado Adelmo Lowe Pletsch Yohandra Reyes Torres |
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| Institution: | 1. Department of Chemistry, Federal University of Technology – Paraná (UTFPR), Medianeira, PR, Brazil;2. Department of Chemistry, State University of Midwest (UNICENTRO), Guarapuava, PR, Brazil |
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| Abstract: | The use of antidepressants is widespread in modern times.Thus,they present a potential risk for eco-systems due to occurrence in domestic sewage containing unaltered metabolites and structures,even after the treatment plants have processed the sewage.The current research investigated the sorption and desorption of antidepressants (citalopram,venlafaxine,fluoxetine,sertraline,and amitriptyline) and caffeine from freshwater sediment and sewage sludge.The samples of freshwater sediment were collected in a river spring in an area with few anthropogenic sources of pollution and samples of sewage sludge were taken from stabilization ponds of a sewage treatment.The matrices were mainly composed of organic fractions,sediment of humic nature,and aliphatic biomolecules in sludges.The presence of silt and clay in the sediment proved to be important for the sorption process when compared to the flocs and colloidal structure of the sludge.The kinetic study indicated pseudo-first order behavior.The Freundlich isotherm was satisfactorily used in the interpretation of sorption and desorption for all analytes and matrices.The high percentages obtained for desorption suggest analyte mobility,which is more intense in the sludge than in the sediment since each matrix has a different composition.It can be considered that the information obtained here reinforces the ecotoxicological concern with respect to pharmaco-logical residues in the environment,as processes of retention by sorption in the sludge and the sediment have been confirmed,as well as the preferential partition of some analytes by the aqueous phase. |
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| Keywords: | Emerging pollutants Drugs Persistence Partition Mobility Sorption |
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