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1997 | OriginalPaper | Buchkapitel

Experiments on Water-Sediment Nutrient Partitioning Under Turbulent, Shear and Diffusive Conditions

verfasst von : Panagiotis D. Scarlatos

Erschienen in: The Interactions Between Sediments and Water

Verlag: Springer Netherlands

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Cultural eutrophication from excessive input of nutrients is a major problem for many water bodies around the world. Phosphorus and to a lesser degree nitrogen constitute the limiting elements for growth of plankton cells. Mobility, speciation and partition of nutrients in aquatic ecosystems depend on a number of physicochemical parameters. Experiments have been conducted for quantification of nutrient partition between ambient water and cohesive sediments. The experiments included nitrate and soluble phosphorus (superphosphate — 46% P2O5 fertilizer) partitioned between tap water and sediment slurries. The slurries involved kaolinite and bentonite as well as natural organic mud from, Lake Okeechobee, Florida. The nutrient exchange was promoted by sediment resuspension. Resuspension was induced either under homogeneous turbulent conditions in an oscillating-grid tank or by shear flow in a lock-exchange flume. The effects of phosphorus or nitrogen concentration, sediment concentration, water temperature, pH and salinity on nutrient partition were quantified. The results obtained through this study appear to be in agreement with data from other similar laboratory or field studies.

Metadaten
Titel
Experiments on Water-Sediment Nutrient Partitioning Under Turbulent, Shear and Diffusive Conditions
verfasst von
Panagiotis D. Scarlatos
Copyright-Jahr
1997
Verlag
Springer Netherlands
DOI
https://doi.org/10.1007/978-94-011-5552-6_43