title: Identification and characterization of odorous gas emission from a full-scale food waste anaerobic digestion plant in China.
abstract: Odorous gas emission characteristic along with the successive processes of a typical full-scale food waste (FW) anaerobic digestion plant in China was investigated in September and January. Seasonal variations in pollutant concentration and principal component analysis (PCA) showed markedly different characteristics between the two months. However, the main reason for the seasonal difference at the sorting process differed from the reason for the seasonal difference at other treatment units. Most odorous volatile organic compound (VOC) concentrations tested near an anaerobic digestion tank were similar and low in both months. Odor indices, including odor contribution (OC) and odor activity value (OAV) of various odorants, were further calculated to evaluate the malodor degree and contribution to the nuisance smell of any odorant. Brought about by people's different dietary habits, H2S and sulfocompounds were found to be dominant contributors to the large total OVA in the January test. By contrast, oxygenated organic compounds played an important role on the sum of OVA in September.
authors.affiliation: School of Environment, Tsinghua University, Beijing, 100084, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Kong
authors.affiliation: School of Environment, Tsinghua University, Beijing, 100084, People's Republic of China. jgliu@tsinghua.edu.cn.|Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education, Beijing, 100084, China. jgliu@tsinghua.edu.cn.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Liu
authors.affiliation: College of Chemical and Environmental Engineering, Beijing Technology and Business University, Beijing, 100048, China.
authors.forename: Lianhai
authors.initials: L
authors.lastname: Ren
authors.affiliation: School of Environment, Tsinghua University, Beijing, 100084, People's Republic of China.
authors.forename: Minying
authors.initials: M
authors.lastname: Song
authors.affiliation: School of Environment, Tsinghua University, Beijing, 100084, People's Republic of China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Environment, Tsinghua University, Beijing, 100084, People's Republic of China.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Ni
authors.affiliation: School of Environment, Tsinghua University, Beijing, 100084, People's Republic of China.
authors.forename: Xiaoqin
authors.initials: X
authors.lastname: Nie
mesh_terms: D000693:Anaerobiosis; D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D005502:Food; D009812:Odorants / Q000032:analysis; D055549:Volatile Organic Compounds / Q000032:analysis*; D062065:Wastewater / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D055549:Volatile Organic Compounds; D062065:Wastewater
keywords: Anaerobic digestion plant; Food waste; Odor indices; Odorous gases; Volatile organic compounds (VOCs)