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Tracing sewage water by 15N in a mangrove ecosystem to test its bioremediation ability

Lambs, Luc and Léopold, Audrey and Zeller, Bernd and Herteman, Mélanie and Fromard, François Tracing sewage water by 15N in a mangrove ecosystem to test its bioremediation ability. (2011) Rapid Communications in Mass Spectrometry, 25 (19). 2777-2784. ISSN 0951-4198

(Document in English)

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Official URL: http://dx.doi.org/10.1002/rcm.5120


Mangrove forests could be a simple and effective alternative to conventional sewage treatment, particularly for island communities given its low cost and low maintenance. Due to their high adaptation capacity, these plants are able to tolerate and bioremediate the high levels of nutrients and pollutants found in sewage water. This solution could be applied to small tropical islands with high population density such as Mayotte in the Indian Ocean. This paper reports on a trial by stable isotopic 15N tracing of such a bioremediation process on pre-treated wastewater near the village of Malamani, in the middle of the large coastal mangrove in the bay near Chirongui. The first results show a boost in the mangrove growth, but a longer period of observation is needed to confirm the beneficial effects, and also to clarify the role of the local crab population, whose engineering activities play an important part in the ecosystem. The exact denitrification process is not yet understood, and the mass balance equation also reveals loss of nitrogen-containing compounds, which needs to be analyzed more closely.

Item Type:Article
HAL Id:hal-01335903
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
French research institutions > Institut de Recherche pour le Développement - IRD (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Impact-Mer (FRANCE)
Other partners > Université de la Nouvelle Calédonie - UNC (FRANCE)
Laboratory name:
Deposited On:04 Mar 2014 13:48

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