A first-order kinetic model for simulating the aerobic degradation of municipal solid waste

Sun, Xiayu; Xu, Hui; Wu, Bin-Hai; Shen, Shuyi; Zhan, Liangtong

doi:10.1016/j.jenvman.2022.117093

Cited by 6 publications

(2 citation statements)

References 54 publications

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“…Previous studies (Sun et al, 2023;Xiao et al, 2021) have utilized a sigmoid curve (Eq. 4) to describe the effect of moisture on waste degradation.…”

Section: Moisture Correction Factormentioning

confidence: 99%

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Up to 200% underestimation of cumulative methane emission from individual landfills uncovers tens of Tg of overlooked annual emission worldwide

Wang,

Yin,

Fang

et al. 2023

Preprint

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Landfill methane (CH4) emissions account for ~ 10% of all anthropogenic CH4 emissions globally, amounting to ~ 50 Tg/year. Contrasted by “top-down” atmospheric inversion results, the mainstream “bottom-up” emission inventories, which use the Intergovernmental Panel on Climate Change’s (IPCC) model, exhibit significant bias due to inaccurate a priori decay constant (k) estimations. We improved the k estimation method by incorporating composition- and environment-specific corrections, which are readily integrated into the IPCC’s model. We demonstrate that the accuracies of CH4 emission predictions are significantly improved by using the corrected k values, which are benchmarked against the atmospheric inversion results. We extend the emission estimations to landfills worldwide and reveal up to 209% underestimation in individual landfills and several tens of Tg/year of potentially overlooked CH4 emission globally. Our findings highlight the importance of prioritizing landfill CH4 emission monitoring and reduction as one of the most cost-effective mitigation options to achieve current climate goals.

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“…Previous studies (Sun et al, 2023;Xiao et al, 2021) have utilized a sigmoid curve (Eq. 4) to describe the effect of moisture on waste degradation.…”

Section: Moisture Correction Factormentioning

confidence: 99%

“…The effect of temperature on waste degradation and methanogenesis has been elucidated in previous studies (Rosso et al, 1993;Schupp et al, 2020;Sun et al, 2023). The temperature correction factor f T can be expressed by a cardinal temperature model with in ection (CTMI) (Eq.…”

Section: Temperature Correction Factormentioning

confidence: 99%