Nonpoint Source Pollutant Transport in Watersheds: Modelling Approaches for Antibiotics, Heavy Metals and Nutrients

43842

Modelling studies predicting the fate and transport of non-point-source pollutants, especially from agricultural and pasture lands, have gained increasing attention during the recent years. Veterinary antibiotics are one of the most widely preferred drugs for animal husbandry. Since a considerable fraction of antibiotics is excreted in animal waste; following to application of animal waste as manure on agricultural lands, antibiotics can affect both soil and water quality by leaching from manure to soil, and by being transported to surface waters via runoff, respectively. This necessitates the development of modeling approaches for planning and management of catchments that play a significant role on water supply. Geographical Information Systems (GIS) has become an important methodological tool in catchment modeling, with the facilities to obtain spatial data, and advanced visualization of numerous data types as different map layers. GIS-based modeling approaches concerned with nutrient transport and water quality are encountered in literature; however, similar studies are scarce for heavy metals and antibiotics. The aim of this study is to provide a summary and evaluation of the existing modelling approaches from the literature that are used for modelling the fate and transport of emerging pollutants, particularly antibiotics, heavy metals and nutrients, in watersheds.

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Antibiotic , Heavy Metal , Nurient , Modelling , Transport , Watershed

International journal of advances in engineering and pure sciences

31

International journal of advances in engineering and pure sciences