期刊
CHEMOSPHERE
卷 240, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2019.124908
关键词
Biodegradation; Siloxane; Volatile organic compounds; Biogas upgrading; Biotrickling filter; Anaerobic batch enrichment
资金
- Spanish Ministry of Economy and Business (MINECO) - Spain - European Regional Development Fund, (FEDER) [CTQ2014-53718R]
- University of Girona
- National Secretary of Education, Science and Technology, (SENESCYT) - Ecuador
- Catalan Government [2017SGR-548, 2017-SGR-1552]
- Universitat de Girona [IFUdG-2015/51]
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [712949]
- Agency for Business Competitiveness of the Government of Catalonia [TECSPR16-1-0045]
Organosilicon compounds are the most undesirable compounds for the energy recovery of biogas. These compounds are still resistant to biodegradation when biotechnologies are considered for biogas purification. Herein we isolated 52 bacterial species from anaerobic batch enrichment cultures (BEC) saturated with D4 and from an anaerobic lab-scale biotrickling filter (BTF) fed with a gas flow containing D4 as unique carbon source. Among those Methylibium sp. and Pseudomonas aeruginosa showed the highest capacity to remove D4 (53.04% +/- 0.03 and 24.42% +/- 0.02, respectively). Contrarily, co-culture evaluation treatment for the biodegradation of siloxanes together with volatile organic compounds removed a lower concentration of D4 compared to toluene and limonene, which were completely removed. Remarkably, the siloxane D5 proved to be more biodegradable than D4. Substrates removal values achieved by Methylibium sp. suggested that this bacterial isolate could be used in biological removal technologies of siloxanes. (C) 2019 Elsevier Ltd. All rights reserved.
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