Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas
This study investigates the influence of moisture content on the potential oxidation efficiency of methane (CH<sub>4</sub>) of biofiltration systems treating landfill gas containing high oxygen concentrations. Column tests filled with compost with different moisture contents (20%, 30%, a...
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| Format: | Article |
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MDPI AG
2020-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/11/2872 |
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| author | Niccolò Frasi Elena Rossi Isabella Pecorini Renato Iannelli |
| author_facet | Niccolò Frasi Elena Rossi Isabella Pecorini Renato Iannelli |
| author_sort | Niccolò Frasi |
| collection | DOAJ |
| description | This study investigates the influence of moisture content on the potential oxidation efficiency of methane (CH<sub>4</sub>) of biofiltration systems treating landfill gas containing high oxygen concentrations. Column tests filled with compost with different moisture contents (20%, 30%, and 40%) loaded with different methane flows were set up on a laboratory scale. Analyzing the results the following evidences can be summarized: With low methane load (<100 g CH<sub>4</sub> m<sup>−2</sup> d<sup>−1</sup>), a moisture content of 20% was not enough to support bacterial activity, while a moisture content of 40% advantaged the compost respiration assisting it to become the dominating process; with higher methane load (100–300 g CH<sub>4</sub> m<sup>−2</sup> d<sup>−1</sup>), a moisture content of 30% resulted in an optimal value to support methanotrophic activity showing the highest CH<sub>4</sub> concentration reduction; moving on to a CH<sub>4</sub> load above 300 g CH<sub>4</sub> m<sup>−2</sup> d<sup>−1</sup>, the inhibition of methanotrophic activity emerged independently to the moisture content of the filter media. The optimal configuration is obtained for a moisture content of 30% and in the case of flows below 200 g CH<sub>4</sub> m<sup>−2</sup> d<sup>−1</sup> for which the oxidation efficiency results higher than 80%. |
| first_indexed | 2024-03-10T19:22:19Z |
| format | Article |
| id | doaj.art-f5175d79e1b242f1b054c09a91016e3b |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T19:22:19Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-f5175d79e1b242f1b054c09a91016e3b2023-11-20T02:53:58ZengMDPI AGEnergies1996-10732020-06-011311287210.3390/en13112872Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill GasNiccolò Frasi0Elena Rossi1Isabella Pecorini2Renato Iannelli3DIEF—Department of Industrial Engineering, University of Florence, 50139 Florence, ItalyDESTEC—Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, 56122 Pisa, ItalyDESTEC—Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, 56122 Pisa, ItalyDESTEC—Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, 56122 Pisa, ItalyThis study investigates the influence of moisture content on the potential oxidation efficiency of methane (CH<sub>4</sub>) of biofiltration systems treating landfill gas containing high oxygen concentrations. Column tests filled with compost with different moisture contents (20%, 30%, and 40%) loaded with different methane flows were set up on a laboratory scale. Analyzing the results the following evidences can be summarized: With low methane load (<100 g CH<sub>4</sub> m<sup>−2</sup> d<sup>−1</sup>), a moisture content of 20% was not enough to support bacterial activity, while a moisture content of 40% advantaged the compost respiration assisting it to become the dominating process; with higher methane load (100–300 g CH<sub>4</sub> m<sup>−2</sup> d<sup>−1</sup>), a moisture content of 30% resulted in an optimal value to support methanotrophic activity showing the highest CH<sub>4</sub> concentration reduction; moving on to a CH<sub>4</sub> load above 300 g CH<sub>4</sub> m<sup>−2</sup> d<sup>−1</sup>, the inhibition of methanotrophic activity emerged independently to the moisture content of the filter media. The optimal configuration is obtained for a moisture content of 30% and in the case of flows below 200 g CH<sub>4</sub> m<sup>−2</sup> d<sup>−1</sup> for which the oxidation efficiency results higher than 80%.https://www.mdpi.com/1996-1073/13/11/2872methane mitigationoxidation efficiencycolumn testscompostbiofilterdiluted landfill gas |
| spellingShingle | Niccolò Frasi Elena Rossi Isabella Pecorini Renato Iannelli Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas Energies methane mitigation oxidation efficiency column tests compost biofilter diluted landfill gas |
| title | Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas |
| title_full | Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas |
| title_fullStr | Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas |
| title_full_unstemmed | Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas |
| title_short | Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas |
| title_sort | methane oxidation efficiency in biofiltration systems with different moisture content treating diluted landfill gas |
| topic | methane mitigation oxidation efficiency column tests compost biofilter diluted landfill gas |
| url | https://www.mdpi.com/1996-1073/13/11/2872 |
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