期刊
CHEMOSPHERE
卷 251, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2020.126359
关键词
Biogas upgrading; Biotrickling filter; Silicone oil; Siloxanes; Two-phase partitioning bioreactor
资金
- regional government of Castilla y Leon
- EU-FEDER programme [CLU 2017-09, UIC 071]
- URBIOFIN project
- Bio Based Industries Joint Undertaking under the European Union's Horizon 2020 research and innovation program [745785]
- Ramon Areces Foundation
- H2020 Societal Challenges Programme [745785] Funding Source: H2020 Societal Challenges Programme
Biogas produced at wastewater treatment plants and landfills contains trace levels of volatile methyl siloxanes (VMS) that are responsible for abrasion, corrosion and erosion of equipment during biogas storage and combustion. This research comparatively evaluated the removal of the most common VMS (L2, L3, D4, and D5) under aerobic conditions in a conventional biotrickling filter (BTF) and a two-phase partitioning BTF (TP-BTF) with silicone oil (at 30%) as organic phase. The TP-BTF showed a superior performance compared to the conventional BTF, increasing the total VMS removal from <30% in the BTF up to similar to 70% in the TP-BTF. The highest REs in the TP-BTF were recorded for D4 and D5, reaching values of 80-90%, corresponding to ECs between 0.12 and 0.17 g m(-3).h(-1). Slightly lower values were obtained for L3 (70-80%), and the lowest performance was recorded for L2 (20-60%) due to the high vapor pressure of this siloxane and therefore its lower affinity by the organic phase. Surprisingly, despite the different inocula used, a similar microbial community was found by the end of operation of both BTFs, with KMBC-112, Reynarella and Chitinophaga as the dominant genera. (C) 2020 The Authors. Published by Elsevier Ltd.
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