Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/25574
Title: Kinetics of the PO4-P adsorption onto soils and sediments from the Mondego estuary (Portugal)
Authors: Otero, M. 
Coelho, J. P. 
Rodrigues, E. T. 
Pardal, M. A. 
Santos, E. B. H. 
Esteves, V. I. 
Lillebo, A. I. 
Keywords: Eutrophication; Estuarine management; Phosphorus; Sorption; Kinetics; Modelling
Issue Date: 2013
Publisher: Elsevier Ltd.
Serial title, monograph or event: Marine Pollution Bulletin
Volume: 77
Issue: 1-2
Abstract: In order to assess the status of a North Atlantic Ocean Ecoregion (Mondego system, Portugal) after the implementation of a management programme, a study on PO4-P sorption was carried out. Considering that sorption velocity markedly determines the systems promptness to phosphorus external loading, the kinetics of the sorption of PO4-P onto estuarine sediments and the upstream agricultural soils was studied. The pseudo-second order kinetic equation gave an appropriate description of PO4-P sorption onto these soils and sediments, allowing for a quantitative comparison. For soils, the kinetic constants (k 2, lg 1 g h 1) ranged between 0.007 and 0.017 lg 1 g h 1 while, in the case of sediments these ranged between 0.008 and 0.012 lg 1 g h 1. Results showed that the reduction of water residence time after the management action was relevant for the system status, affecting its reaction capacity to phosphorus loading.
URI: http://hdl.handle.net/10316/25574
DOI: 10.1016/j.marpolbul.2013.08.039
Rights: openAccess
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais

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