| Title: | A systematic study on the VOCs characterization and odour emissions in a full-scale sewage sludge composting plant |
| Author(s): | Gonzalez D; Colon J; Sanchez A; Gabriel D; |
| Address: | "Composting Research Group (GICOM) Dept. of Chemical, Biological and Environmental Engineering, Universitat Autonoma de Barcelona, 08193, Bellaterra (Barcelona), Spain; Group of biological treatment of liquid and gaseous effluents (GENOCOV) Dept. of Chemical, Biological and Environmental Engineering, Universitat Autonoma de Barcelona, 08193, Bellaterra (Barcelona), Spain. BETA Technology Centre: 'U Science Tech', University of Vic-Central University of Catalonia, 08500 Vic, Barcelona, Spain. Composting Research Group (GICOM) Dept. of Chemical, Biological and Environmental Engineering, Universitat Autonoma de Barcelona, 08193, Bellaterra (Barcelona), Spain. Group of biological treatment of liquid and gaseous effluents (GENOCOV) Dept. of Chemical, Biological and Environmental Engineering, Universitat Autonoma de Barcelona, 08193, Bellaterra (Barcelona), Spain. Electronic address: david.gabriel@uab.cat" |
| DOI: | 10.1016/j.jhazmat.2019.03.131 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Sewage sludge management is known to cause odour impact over the environment. However, an information gap exists about odour emissions quantification from different treatment strategies. In the present work, odorous emissions generated in a full-scale sewage sludge composting plant were characterized, aiming at providing specific odour emission factors (OEF) and to determine their variability depending on the composting time. Additionally, characterization of VOCs emitted during the process was conducted through TD-GC/MS analyses. Odour emission and VOCs characterization considered both (1) a first stage where a raw sludge and vegetal fraction mixture were actively composted in dynamic windrows and (2) a second curing stage in static piles. After increasing the composting time, a reduction of 40% of the maximum odour concentration referred to the dynamic windrow stage was estimated, whereas a reduction of 89% of the maximum odour concentration was achieved after turning of curing piles. However, global OEF increased from 4.42E + 06 to 5.97E + 06 ou.Mg(-1) RS - VF when the composting time increased. Finally, different VOCs such as isovaleraldehyde, indole, skatole, butyric acid, dimethyl sulphide and dimethyl disulphide were identified as main potential odour contributors. Results obtained are a valuable resource for plant management to choose an appropriate sewage sludge composting strategy to mitigate odour emissions" |
| Keywords: | *Composting Odorants/*analysis *Sewage Volatile Organic Compounds/*analysis Full-scale composting plant Gaseous emissions Odour emission factor Odour emission rate Sewage sludge Voc; |
| Notes: | "MedlineGonzalez, Daniel Colon, Joan Sanchez, Antoni Gabriel, David eng Netherlands 2019/04/09 J Hazard Mater. 2019 Jul 5; 373:733-740. doi: 10.1016/j.jhazmat.2019.03.131. Epub 2019 Apr 1" |
