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Title: | Kinetics of the PO4-P adsorption onto soils and sediments from the Mondego estuary (Portugal) |
Author: | Otero, M. Coelho, J. P. Rodrigues, E. T. Pardal, M. A. Santos, E. B. H. Esteves, V. I. Lillebø, A. I. |
Keywords: | Estuarine management Eutrophication Kinetics Modelling Phosphorus Sorption |
Issue Date: | 2013 |
Publisher: | Elsevier |
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 (k2*, μg-1gh-1) ranged between 0.007 and 0.017μg-1gh-1while, in the case of sediments these ranged between 0.008 and 0.012μg-1gh-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. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/24224 |
DOI: | 10.1016/j.marpolbul.2013.08.039 |
ISSN: | 0025-326X |
Appears in Collections: | CESAM - Artigos DBio - Artigos DQ - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Otero et al. - 2013 - Kinetics of the PO4-P adsorption onto soils and se.pdf | 739.62 kB | Adobe PDF |
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