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Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas

Author

Listed:
  • Niccolò Frasi

    (DIEF—Department of Industrial Engineering, University of Florence, 50139 Florence, Italy)

  • Elena Rossi

    (DESTEC—Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, 56122 Pisa, Italy)

  • Isabella Pecorini

    (DESTEC—Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, 56122 Pisa, Italy)

  • Renato Iannelli

    (DESTEC—Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, 56122 Pisa, Italy)

Abstract

This study investigates the influence of moisture content on the potential oxidation efficiency of methane (CH 4 ) 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 4 m −2 d −1 ), 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 4 m −2 d −1 ), a moisture content of 30% resulted in an optimal value to support methanotrophic activity showing the highest CH 4 concentration reduction; moving on to a CH 4 load above 300 g CH 4 m −2 d −1 , 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 4 m −2 d −1 for which the oxidation efficiency results higher than 80%.

Suggested Citation

  • Niccolò Frasi & Elena Rossi & Isabella Pecorini & Renato Iannelli, 2020. "Methane Oxidation Efficiency in Biofiltration Systems with Different Moisture Content Treating Diluted Landfill Gas," Energies, MDPI, vol. 13(11), pages 1-15, June.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:11:p:2872-:d:367493
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    References listed on IDEAS

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    1. Isabella Pecorini & Elena Rossi & Renato Iannelli, 2020. "Mitigation of Methane, NMVOCs and Odor Emissions in Active and Passive Biofiltration Systems at Municipal Solid Waste Landfills," Sustainability, MDPI, vol. 12(8), pages 1-23, April.
    2. Baldi, F. & Pecorini, I. & Iannelli, R., 2019. "Comparison of single-stage and two-stage anaerobic co-digestion of food waste and activated sludge for hydrogen and methane production," Renewable Energy, Elsevier, vol. 143(C), pages 1755-1765.
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    Cited by:

    1. Józef Ciuła & Violetta Kozik & Agnieszka Generowicz & Krzysztof Gaska & Andrzej Bak & Marlena Paździor & Krzysztof Barbusiński, 2020. "Emission and Neutralization of Methane from a Municipal Landfill-Parametric Analysis," Energies, MDPI, vol. 13(23), pages 1-18, November.

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