Emission characteristics and health risk assessment of VOCs from a food waste anaerobic digestion plant: A case study of Suzhou, China

doi:10.1016/j.envpol.2019.113546

	Emission characteristics and health risk assessment of VOCs from a food waste anaerobic digestion plant: A case study of Suzhou, China
	Zheng, Guodi 1,2; Liu, Junwan 1,2; Shao, Zhuze 1,2; Chen, Tongbin 1,2
刊名	ENVIRONMENTAL POLLUTION
	2020-02-01
卷号	257 页码:9
关键词	Anaerobic digestion Food waste Volatile organic compounds Health assessment Carcinogenic risk
ISSN号	0269-7491
DOI	10.1016/j.envpol.2019.113546
通讯作者	Zheng, Guodi(zhenggd@igsnrr.ac.cn)
英文摘要	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 x 10(4) mu g/m(3)), followed by the sorting/crushing room (8.97 x 10(3) mu g/m(3)), anaerobic digestion unit (6.21 x 10(2) mu g/m(3)), and biogas production unit (2.01 x 10(2) mu g/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 x 10(-6)), while the non-carcinogenic risk was within the acceptable range (HI < 1). The carcinogenic risk from the hydrothermal hydrolysis unit was the highest, reaching 4.4 x 10(-5), and was labeled as "probable risk." The carcinogenic risk at the plant boundary was 1.2 x 10(-5), indicating exhaust gases can cause a health threat to neighbors. Therefore, management VOCs in anaerobic digestion plants should receive more attention, and employees should minimize the time they spend in the hydrothermal hydrolysis unit. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[41371455] ; National Key Technology R&D Program of China[2014BAC02B01]
WOS关键词	VOLATILE ORGANIC-COMPOUNDS ; MUNICIPAL SOLID-WASTE ; SULFUR-COMPOUNDS ; CRITICAL COMPONENTS ; COMPOUND EMISSIONS ; DECOMPOSITION ; BIOMETHANIZATION ; INHIBITION ; GENERATION ; MANAGEMENT
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000514746800055
资助机构	National Natural Science Foundation of China ; National Key Technology R&D Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/132757]
专题	中国科学院地理科学与资源研究所
通讯作者	Zheng, Guodi
作者单位	1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Environm Remediat, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Guodi,Liu, Junwan,Shao, Zhuze,et al. Emission characteristics and health risk assessment of VOCs from a food waste anaerobic digestion plant: A case study of Suzhou, China[J]. ENVIRONMENTAL POLLUTION,2020,257:9.
APA	Zheng, Guodi,Liu, Junwan,Shao, Zhuze,&Chen, Tongbin.(2020).Emission characteristics and health risk assessment of VOCs from a food waste anaerobic digestion plant: A case study of Suzhou, China.ENVIRONMENTAL POLLUTION,257,9.
MLA	Zheng, Guodi,et al."Emission characteristics and health risk assessment of VOCs from a food waste anaerobic digestion plant: A case study of Suzhou, China".ENVIRONMENTAL POLLUTION 257(2020):9.