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Simultaneous mitigation of methane and odors in a biowindow using a pipe network
- Simultaneous mitigation of methane and odors in a biowindow using a pipe network
- Jung, Hyekyeng; Oh, Kyung-Cheol; Ryu, Hee-Wook; Jeon, Jun-Min; Cho, Kyung-Suk
- Ewha Authors
- SCOPUS Author ID
- Issue Date
- Journal Title
- WASTE MANAGEMENT
- WASTE MANAGEMENT vol. 100, pp. 45 - 56
- Biowindow; Landfill; Methane; Odor; Mitigation; Bacterial community
- PERGAMON-ELSEVIER SCIENCE LTD
- SCIE; SCOPUS
- Document Type
- In this study, a biowindow with a piped gas collection network is proposed as an area-efficient landfill gas treatment system. A 9-m(2) biowindow was constructed for treating landfill gas collected from an area of 450 m(2) in a sanitary landfill, and its performance was evaluated for 224 days. The methane removal efficiency was 59-100% at 146.3-675.1 g-CH4 m(-2) d(-1). Odorous compounds were also removed by the biowindow, with a complex odor intensity removal rate of 93-100%. In particular, the removal efficiency for hydrogen sulfide and methanethiol, major contributors to the complex odor intensity, was 97% and 91%, respectively. Metagenomic analysis showed that the dominant bacterial genera shifted from Acinetobacter and Pseudomonas to Methylobacter and Methylocaldum due to the high concentration of methane. A high bacterial diversity was maintained, which may have contributed to the robust performance of the biowindow against environmental fluctuations. At 1/50th of the size of conventional biocovers, the proposed biowindow can greatly reduce the required installation area and represents a competitive method for the simultaneous treatment of methane and odor in landfills. (C) 2019 Elsevier Ltd. All rights reserved.
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