| Title: | Emission characteristics and health risk assessment of volatile organic compounds produced during municipal solid waste composting |
| Author(s): | Nie E; Zheng G; Shao Z; Yang J; Chen T; |
| Address: | "Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China. Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: zhenggd@igsnrr.ac.cn. Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: yangj@igsnrr.ac.cn. Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: chentb@igsnrr.ac.cn" |
| DOI: | 10.1016/j.wasman.2018.07.024 |
| ISSN/ISBN: | 1879-2456 (Electronic) 0956-053X (Linking) |
| Abstract: | "Municipal solid waste degradation during composting generates volatile organic compounds (VOCs), which can pose health risks the staff at the composting site and people living nearby. This problem restricts the widespread application of composting techniques. The characteristics of VOCs emitted from different units at a composting plant and the health risks posed were investigated in this study. A total of 44 VOCs (including alkanes, alkenes, aromatic compounds, halogenated compounds, oxygenated compounds, and sulfur-containing compounds) were identified and quantified. The highest VOC concentration (15484.1?ª++/-?ª+785.3?ª+microg/m(3)) was found in primary fermentation, followed by the tipping unit (10302.1?ª++/-?ª+1334.8?ª+microg/m(3)), composting product (4693.6?ª++/-?ª+1024.3?ª+microg/m(3)), secondary fermentation (929.9?ª++/-?ª+105.2?ª+microg/m(3)), and plant boundary (370.4?ª++/-?ª+75.8?ª+microg/m(3)). The mean VOC concentration was 6356.0?ª+microg/m(3). The main compounds emitted during primary fermentation were oxygenated and those emitted from the tipping unit were alkenes. Health risk assessments indicate that VOCs did not pose unacceptable non-carcinogenic risks i.e., the HR values were <1 and carcinogenic risks (CR) values were <1.0?ª+x?ª+10(-4). These results indicate that VOC emissions do not pose health risks to the staff at the composting site or to people living nearby. However, the cumulative non-carcinogenic and carcinogenic risks posed by the VOC mixture were high, especially for the primary fermentation unit emissions. Therefore, protecting the staff working near the primary fermentation unit should be a priority. Measures should be taken to minimize cumulative non-carcinogenic and carcinogenic risks because people are exposed to a mixture of VOCs mixture rather than to a single type of VOC" |
| Keywords: | *Composting Humans Risk Assessment Solid Waste Sulfur Compounds *Volatile Organic Compounds Composting Gc-ms Health risk assessment Municipal solid waste Volatile organic compounds; |
| Notes: | "MedlineNie, Erqi Zheng, Guodi Shao, Zhuze Yang, Jun Chen, Tongbin eng 2018/10/23 Waste Manag. 2018 Sep; 79:188-195. doi: 10.1016/j.wasman.2018.07.024. Epub 2018 Jul 27" |
