| Title: | Emission of odor pollutants and variation in microbial community during the initial decomposition stage of municipal biowaste |
| Author(s): | Nie E; Wang W; Duan H; Zhang H; He P; Lu F; |
| Address: | "Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China. Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, People's Republic of China; Shanghai Engineering Research Center of Multi-source Solid Wastes Co-processing and Energy Utilization, Shanghai 200092, People's Republic of China. Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China. Electronic address: lvfan.rhodea@tongji.edu.cn" |
| DOI: | 10.1016/j.scitotenv.2022.160612 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Odor pollution often occurs in the initial decomposition stage of municipal biowaste, including throwing/collection and transportation. However, this aspect of odor impact from municipal biowaste has not been well studied. In this study, a practical dustbin (120 L) equipped with flux chamber and filled with three types of municipal biowaste was used to simulate garbage storage conditions. The result indicated that the emission rate of odor pollutants for uncooked food waste (UFW) represented a nearly linear growth trend, reaching the maximum (3963 +/- 149 mug kg(-1) DM h(-1)) at 72 h. Cooked food waste (CFW) increased rapidly from 8 h to 24 h, and then remain fluctuated, reached the maximum (2026 +/- 77 mug kg(-1) DM h(-1)) at 72 h. Comparatively, household kitchen waste (HKW) reached the maximum emission rate (10,396 +/- 363 mug kg(-1) DM h(-1)) at 16 h. Sulfide and aldehydes ketones were identified as dominant odor contributor to UFW and CFW, respectively. While aldehydes ketones and sulfides were both dominant odor contributor to HKW. Moreover, the microbial diversity analysis suggests that Acinetobacter was the dominant genus in UFW, and Lactobacillus was the dominant genus in CFW and HKW. In addition, it was evident that each odorous pollutant was significantly associated with two or more bacterial genera, and most bacterial genera such as Acinetobacter, were also significantly associated with multiple odorous pollutants. The variation of odorants composition kept consistent with microbial composition. The present study could provide essential evidence for a comprehensive understanding of odorant generation in the initial decomposition stage of municipal biowaste. It could contribute to setting out strategies for odor control and abatement in municipal biowaste management systems" |
| Keywords: | *Environmental Pollutants *Refuse Disposal Odorants/analysis Food Sulfides *Microbiota *Air Pollutants/analysis Initial decomposition stage Microbial community Municipal biowaste Odor pollution Volatile organic compounds (VOCs); |
| Notes: | "MedlineNie, Erqi Wang, Wei Duan, Haowen Zhang, Hua He, Pinjing Lu, Fan eng Netherlands 2022/12/02 Sci Total Environ. 2023 Feb 25; 861:160612. doi: 10.1016/j.scitotenv.2022.160612. Epub 2022 Nov 29" |
