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Study of the effect of organic waste products amendments and microbial diversity on volatile organic compounds emissions by soil

Abstract : VOCs emissions play a pivotal role on the atmospheric pollution. Biogenic sources of VOCs are between 10 and 11 times higher than VOC emissions from anthropogenic sources. Recently, the importance of the characterization of the VOC fluxes by soils and microorganisms has been highlighted. Instead, VOCs emissions from soil and microorganisms are possible precursors of the particulate matter and the O3 formation. This work is focused on the characterization of the VOCs emissions by soils amended with OWPs over the long and short terms application. The influence of the microbial diversity in soil on VOCs emissions was also analysed. VOC emissions were detected using the PTR-QiTOF-MS technique and all the experiments were performed under controlled laboratory condition using dynamic chambers for the detection of the VOCs emissions from samples. The results showed that different OWPs released different quantity of VOCs emissions and also the chemical and physical properties of the soil were linked to the emissions. Analyses on the influence of microbial biodiversity on VOCs emissions have shown that while the microbial diversity was higher VOC emissions by soils were lower. Furthermore, the diversity of the VOCs decreases when the VOCs emissions by soil are higher. Finally, the study of the dynamics of VOC emissions from microcosms amended with fresh OWPs, showed that the VOC emission flux increased in the first 49 hours after the OWP amendment, due to a disturbance of the microbial community in the soil.
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Submitted on : Thursday, August 5, 2021 - 12:55:34 PM
Last modification on : Sunday, September 5, 2021 - 3:23:06 AM

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  • HAL Id : tel-03314991, version 1

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Letizia Abis. Study of the effect of organic waste products amendments and microbial diversity on volatile organic compounds emissions by soil. Environmental Sciences. Sorbonne Université, 2019. English. ⟨tel-03314991⟩

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