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Valorisation du surnageant d’effluents de brasserie dans la production de planctons pour la pisciculture : une alternative pour la protection de l’environnement dans les pays du Sud

Authors :
Mouhamadou Nourou Dine Liady
Baruc Kpèhouénou Goussanou
Richard Adandé
Agossou D. Pacôme Noumavo
Louis Amani Kouadio
Fouad Zouhir
Martin Pépin Aïna
Émile Didier Fiogbe
Source :
Biotechnologie, Agronomie, Société et Environnement, Vol 24, Iss 4, Pp 235-239 (2020)
Publication Year :
2020
Publisher :
Presses Agronomiques de Gembloux, 2020.

Abstract

Valorisation of the supernatant of brewery effluent in plankton production for fish farming: an alternative for environment protection in southern countries Description of the subject. Identifying optimal conditions for the use of brewery effluents in phytoplankton production. Objectives. To determine the nutrient potential of the supernatant of this effluent, conditions for its use in phytoplankton production and the depollution that results from its use. Methods. Firstly, the supernatant of the effluent was analyzed. Five triplicate treatments were then seeded with Scenedesmus quadricauda, and followed for 27 days through measurements of biomass and physicochemical parameters. Finally, abatement rates of the initial polluting loads were determined. Results. Although the supernatant does not comply with the Benin standard, it does have a high nutrient potential. Not neutralizing the acidic initial pH led to a delay in algal growth. The treatment that contained 10% supernatant presented the highest algal production and significant reductions in polluting loads. Conclusions. In contexts where there is no functional wastewater treatment plan, it would be interesting to set up a win-win partnership between breweries and fish farmers. Optimal conditions would include optimal dose and prior pH neutralization.

Details

Language :
English, French
ISSN :
17804507 and 13706233
Volume :
24
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Biotechnologie, Agronomie, Société et Environnement
Publication Type :
Academic Journal
Accession number :
edsdoj.4821f290759e4316af28d28fdce515ea
Document Type :
article
Full Text :
https://doi.org/10.25518/1780-4507.18768