Toward a sustainable and cost-efficient biological-based platform for siloxanes removal
| Autor: | Sara Cantera, Raquel Lebrero Fernández, Celia Pascual |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Critical Reviews in Environmental Science and Technology Critical Reviews in Environmental Science and Technology 53 (2023) 1 Datacite NARCIS ORCID STARTPAGE=1;ENDPAGE=17;ISSN=1064-3389;TITLE=Critical Reviews in Environmental Science and Technology Critical Reviews in Environmental Science and Technology, 1-17 Critical Reviews in Environmental Science and Technology, 53(1), 70-86 |
| ISSN: | 1547-6537 1064-3389 |
| DOI: | 10.1080/10643389.2022.2044254 |
| Popis: | Volatile methyl siloxanes (VMS) are persistent contaminants extensively used in industrial applications. Their presence in biogas constitutes a major hindrance for its energetic valorization or its use as renewable natural gas. Current commercial siloxanes abatement technologies are based on physical-chemical methods, whose good performance is impaired by their high investment costs, and a hefty environmental impact. Research evidences that VMS are indeed biodegradable, which opens the possibility of implementing bio-based technologies as a cost-effective and sustainable alternative for the removal of these compounds. This review uncovers the most plausible organisms and microbial pathways involved in biological VMS degradation, a relatively unexplored area. Additionally, the most commonly applied configurations and the main operating challenges are thoroughly revised and discussed, evidencing that a feasible implementation relies on the optimization and scale-up of enhanced mass transfer bioreactors. Finally, the techno-economic and environmental analysis demonstrate that, although in a very early stage, emerging biological technologies for siloxanes removal will play an important key role on the future abatement of VMS from waste gas streams such as raw biogas. |
| Databáze: | OpenAIRE |
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