| Title: | "Emission characteristics and health risk assessment of VOCs from a food waste anaerobic digestion plant: A case study of Suzhou, China" |
| Author(s): | Zheng G; Liu J; Shao Z; Chen T; |
| Address: | "Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 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 Sciences, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China" |
| DOI: | 10.1016/j.envpol.2019.113546 |
| ISSN/ISBN: | 1873-6424 (Electronic) 0269-7491 (Linking) |
| Abstract: | "The process of anaerobic digestion in food waste treatment plants generates a large amount of volatile organic compounds (VOCs). Long-term exposure to this exhaust gas can pose a threat to the health of workers and people living nearby. In this study, VOCs emitted from different working units in a food waste anaerobic digestion plant were monitored for a year. Variations in VOCs emitted from each unit were analyzed and a health risk assessment was conducted for each working unit. The results show that the concentration of VOCs in different units varied greatly. The highest cumulative concentration of VOCs appeared in the hydrothermal hydrolysis unit (3.49?ª+x?ª+10(4)?ª+mug/m(3)), followed by the sorting/crushing room (8.97?ª+x?ª+10(3)?ª+mug/m(3)), anaerobic digestion unit (6.21?ª+x?ª+10(2)?ª+mug/m(3)), and biogas production unit (2.01?ª+x?ª+10(2)?ª+mug/m(3)). Oxygenated compounds and terpenes were the major components of the emitted VOCs, accounting for more than 98% of total VOC emissions. The carcinogenic risk in the plant exceeded the safety threshold (ILCR<1?ª+x?ª+10(-6)), while the non-carcinogenic risk was within the acceptable range (HI?ª+ |
| Keywords: | Air Pollutants/analysis Anaerobiosis China *Environmental Monitoring Food Humans Refuse Disposal Risk Assessment Volatile Organic Compounds/*analysis *Waste Disposal Facilities Anaerobic digestion Carcinogenic risk Food waste Health assessment Volatile or; |
| Notes: | "MedlineZheng, Guodi Liu, Junwan Shao, Zhuze Chen, Tongbin eng England 2019/11/12 Environ Pollut. 2020 Feb; 257:113546. doi: 10.1016/j.envpol.2019.113546. Epub 2019 Nov 2" |
