Reference : Monitoring of slaughterhouse wastewater biodegradation in a SBR using fluorescence and...
Scientific journals : Article
Engineering, computing & technology : Chemical engineering
http://hdl.handle.net/2268/143379
Monitoring of slaughterhouse wastewater biodegradation in a SBR using fluorescence and UV–Visible absorbance
English
[fr] Suivi de la biodegradation des eaux usées d'abattoir dans un SBR en utilisant la fluorescence et l'absorbance
Louvet, Jean-Noël mailto [Université de Liège - ULiège > Sciences et technologie de l'environnement > Mécanique et construction > >]
Homeky, Billy []
Casellas, Magali []
Pons, Marie-Noëlle []
Dagot, Christophe []
2013
Chemosphere
Elsevier Science
Yes (verified by ORBi)
International
0045-6535
Oxford
United Kingdom
[en] bioreactor monitoring ; fluorescence spectroscopy ; hemoglobin
[en] The aim of this study was to demonstrate that the effectiveness of slaughterhouse wastewater treatment by activated sludge could be enhanced through the use of optical techniques, such as UV–Visible absorbance and fluorescence spectroscopy, to estimate the hydraulic retention time necessary to remove the biodegradable chemical oxygen demand (COD). Two experiments were conducted. First, a batch aerobic degradation was performed on four wastewater samples collected from four different cattle processing sites in order to study the changes in the spectroscopic properties of wastewater during biodegradation. Second, a sequencing batch reactor was used in order to confirm that the wastewater fluorescence could be successfully used to monitor wastewater biodegradation in a pilot-scale experiment. Residual blood was the main source of organic matter in the wastewater samples. The absorbance at 416 nm, related to porphyrins, was correlated to the COD during wastewater biodegradation. The tryptophan-like/fulvic-like fluorescence intensity ratio was related to the extent of biodegradation. The COD removal efficiency ranged from 74% to 94% with an hydraulic retention time (HRT) of 23 h. A ratio of tryptophan-like/fulvic-like fluorescence intensities higher than 1.2 indicated incomplete biodegradation of the wastewater and the need to increase the HRT.
CNRS
Agence Nationale de la Recherche
DEFIVIANDES
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/143379
10.1016/j.chemosphere.2013.01.011
http://www.sciencedirect.com/science/article/pii/S004565351300088X

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