Micro-aeration for hydrogen sulfide reduction in full-scale anaerobic digesters with limited headspace: Performance and sulfide reduction kinetics
A full-scale trial of micro-aeration was conducted at a municipal wastewater plant using two anaerobic digesters with limited headspace, one as a control and one as a test. A reduction of approximately 13 %–16 % in hydrogen sulfide biogas concentrations was observed in the test digester. Microbial community analyses were also conducted at steady-state conditions to determine differences between the microbial ecology of the test and the control digesters. Although sulfide removal typically occurs in the headspace of a micro-aerated digester, the data generated by this pilot study developed a new approach to quantify the contribution of liquid phase sulfide oxidizing microbes (SOM).
Authors
- Christopher Muller (ORCID: https://orcid.org/0000-0003-3855-3375)
- Lutgarde Raskin (ORCID: https://orcid.org/0000-0002-9625-4034)
- Steven J. Skerlos (ORCID: https://orcid.org/0000-0003-3025-4688)
- George Nakhla (ORCID: https://orcid.org/0000-0002-6807-129X)
- Embrey Bronstad
- Renisha Karki (ORCID: https://orcid.org/0000-0003-4896-2105)
- Karla Guevarra
- Parisa Shahbaz (ORCID: https://orcid.org/0000-0001-7715-580X)
- Laurie Pierce
- Amanda Summers (ORCID: https://orcid.org/0000-0003-3454-9731)
- Kati Bell
- Ali Khadir (ORCID: https://orcid.org/0000-0002-5420-7213)
Institutions
- Western University (CA)
- University of Michigan (US)
- Brown and Caldwell (United States) (US)
- Public Works (GB)
Publication Details
- Journal
- Process Safety and Environmental Protection
- Published
- 2025-02-13
- DOI
- https://doi.org/10.1016/j.psep.2025.106911
- Citations
- 7
- Primary Topic
- Industrial Gas Emission Control
- Type
- article
- Field-Weighted Citation Impact
- 4.99