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A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes

Department of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, KY 40506, USA
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Author to whom correspondence should be addressed.
Academic Editors: Víctor Matamoros and Pedro N. Carvalho
Water 2021, 13(24), 3631; https://doi.org/10.3390/w13243631
Received: 20 October 2021 / Revised: 7 December 2021 / Accepted: 14 December 2021 / Published: 17 December 2021
Wetland treatment systems are used extensively across the world to mitigate surface runoff. While wetland treatment for nitrogen mitigation has been comprehensively reviewed, the implications of common-use pesticides and antibiotics on nitrogen reduction remain relatively unreviewed. Therefore, this review seeks to comprehensively assess the removal of commonly used pesticides and antibiotics and their implications for nitrogen removal in wetland treatment systems receiving non-point source runoff from urban and agricultural landscapes. A total of 181 primary studies were identified spanning 37 countries. Most of the reviewed publications studied pesticides (n = 153) entering wetlands systems, while antibiotics (n = 29) had fewer publications. Even fewer publications reviewed the impact of influent mixtures on nitrogen removal processes in wetlands (n = 16). Removal efficiencies for antibiotics (35–100%), pesticides (−619–100%), and nitrate-nitrogen (−113–100%) varied widely across the studies, with pesticides and antibiotics impacting microbial communities, the presence and type of vegetation, timing, and hydrology in wetland ecosystems. However, implications for the nitrogen cycle were dependent on the specific emerging contaminant present. A significant knowledge gap remains in how wetland treatment systems are used to treat non-point source mixtures that contain nutrients, pesticides, and antibiotics, resulting in an unknown regarding nitrogen removal efficiency as runoff contaminant mixtures evolve. View Full-Text
Keywords: constructed wetlands; nitrogen removal; contaminants of emerging concern; pesticides; antibiotics; non-point source pollution constructed wetlands; nitrogen removal; contaminants of emerging concern; pesticides; antibiotics; non-point source pollution
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MDPI and ACS Style

Nottingham, E.R.; Messer, T.L. A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes. Water 2021, 13, 3631. https://doi.org/10.3390/w13243631

AMA Style

Nottingham ER, Messer TL. A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes. Water. 2021; 13(24):3631. https://doi.org/10.3390/w13243631

Chicago/Turabian Style

Nottingham, Emily R., and Tiffany L. Messer. 2021. "A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes" Water 13, no. 24: 3631. https://doi.org/10.3390/w13243631

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