| Title: | Relationships between emitted volatile organic compounds and their concentration in the pile during municipal solid waste composting |
| Author(s): | Sanchez-Monedero MA; Fernandez-Hernandez A; Higashikawa FS; Cayuela ML; |
| Address: | "Department of Soil and Water Conservation and Organic Waste Management, Centro de Edafologia y Biologia Aplicada del Segura, CSIC, P.O. Box 4195, 30080 Murcia, Spain. Electronic address: monedero@cebas.csic.es. Centro IFAPA 'Venta del Llano', P.O. Box 50, 23620 Mengibar, Jaen, Spain. Department of Soil and Water Conservation and Organic Waste Management, Centro de Edafologia y Biologia Aplicada del Segura, CSIC, P.O. Box 4195, 30080 Murcia, Spain; Santa Catarina State Agricultural Research and Rural Extension Agency - Epagri, Ituporanga Agricultural Experiment Station, P.O. Box 121, 88400-000 Ituporanga, Brazil. Department of Soil and Water Conservation and Organic Waste Management, Centro de Edafologia y Biologia Aplicada del Segura, CSIC, P.O. Box 4195, 30080 Murcia, Spain" |
| DOI: | 10.1016/j.wasman.2018.07.041 |
| ISSN/ISBN: | 1879-2456 (Electronic) 0956-053X (Linking) |
| Abstract: | "Composting operations taking place at municipal solid waste (MSW) treatment plants represent a source of volatile organic compounds (VOC) to the atmosphere. Understanding the variables governing the release of VOC at these facilities is crucial to assess potential health risks for site workers and local residents. In this work the changes in the VOC composition of a composting pile were monitored and compared to the VOC emmited from the same pile in order to understand the impact of composting operations on the release of VOC. More than one hundred VOC were indentified in the solid phase of the composting piles, which were dominated by terpenes (about 50% of the total amount of VOC) and in a lower quantity alcohols, volatile fatty acids and aromatic compounds. There was a reduction in the total concentration of VOC in the pile during composting, from 45 to 35?ª+mg/kg, but the compostion and distribution of VOC families remained stable in the pile even in the mature compost. However, there was no correlation between the emitted VOC and their concentration in the composting pile. The VOC emission pattern was affected by the biological activity in the pile (measured by temperature, CO(2) evolution and the presence of CH(4) emissions). The highest VOC emissions were detected at early stages of the process, alongside with the generation of CH(4) in the pile, and then decreased sharply in the mature compost as a consequence of biodegradation and volatilisation. These results pointed to the importance of composting operation rather than the composition of the raw materials on the release of VOC in composting plants" |
| Keywords: | "Biodegradation, Environmental *Composting Humans Soil Solid Waste *Volatile Organic Compounds Volatilization Anaerobiosis Gaseous emissions Maturation Methane Spme Volatilisation;" |
| Notes: | "MedlineSanchez-Monedero, M A Fernandez-Hernandez, A Higashikawa, F S Cayuela, M L eng 2018/10/23 Waste Manag. 2018 Sep; 79:179-187. doi: 10.1016/j.wasman.2018.07.041. Epub 2018 Jul 27" |
