Characterization of gaseous odorous emissions from a rendering plant by GC/MS and treatment by biofiltration.

Benoît Anet (1, 2, 3) , Marguerite Lemasle (1) , Catherine Couriol (1) , Thomas Lendormi (2, 4) , Abdeltif Amrane (1) , Pierre Le Cloirec (1) , Gilles Cogny (2, 3) , Romain Fillières (2, 5)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 LIMATB - Laboratoire d'Ingénierie des Matériaux de Bretagne
3 Atemax France
4 UEB - Université européenne de Bretagne - European University of Brittany
5 Akiolis Group

This research focuses on the identification and quantification of odorous components in rendering plant emissions by GC/MS and other analytical methods, as well as the description of phenomena occurring in biofilter in order to improve the removal efficiency of industrial biofilters. Among the 36 compounds quantified in the process air stream, methanethiol, isopentanal and hydrogen sulfide, presented the major odorous contributions according to their high concentrations, generally higher than 10 mg m(-3), and their low odorous detection thresholds. The elimination of such component mixtures by biofiltration (Peat packing material, EBRT: 113 s) was investigated and revealed that more than 83% of hydrogen sulfide and isopentanal were removed by biofilter. Nevertheless, the incomplete degradation of such easily degradable pollutants suggested inappropriate conditions as lack of nutrients and acidic pH. These inadequate conditions could explain the lack of performance, especially observed on methanethiol (53% of RE) and the production of oxygenated and sulfur by-products by the biofilter itself.

Mots clés: Biofiltration; Odor analysis; Odorous emissions; Rendering industry

Domaines: Autre

Benoît Anet, Marguerite Lemasle, Catherine Couriol, Thomas Lendormi, Abdeltif Amrane, et al.. Characterization of gaseous odorous emissions from a rendering plant by GC/MS and treatment by biofiltration.. Journal of Environmental Management, 2013, 128, pp.981-7. ⟨10.1016/j.jenvman.2013.06.028⟩. ⟨hal-00860108⟩