Decoupling MSW settlement into mechanical and biochemical processes – Modelling and validation on large-scale setups

Gourc, Jean-Pierre; Staub, Matthias; Conte, Michele

doi:10.1016/j.wasman.2010.03.004

Cited by 79 publications

(49 citation statements)

References 21 publications

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“…The transition from mechanical creep to biocompression (t B ) has been linked to a break in slope of timedependent compression plotted on a semi-logarithmic plot (e.g., Fig. 1), the onset of methane generation (e.g., Bareither et al 2010a;Gourc et al 2010), and a decrease in leachate volatile fatty acid concentration or chemical oxygen demand and corresponding increase in pH (e.g., Olivier and Gourc 2007;Ivanova et al 2008;Bareither et al 2012a;Bareither et al 2013).…”

Section: Biocompressionmentioning

confidence: 99%

“…where ε BIO is total strain due to biodegradation, k is the first-order decay coefficient, and t is elapsed time since final waste placement (Park and Lee 1997;El-Fadel and Khoury 2000;Park and Lee 2002;Gourc et al 2010). Applying Eq.…”

Section: Biocompressionmentioning

confidence: 99%

“…Waste properties of Deer Track Bioreactor Experiment for waste layers after initial filling (prior to subsequent waste placement) and waste layers at the end-of-filling (prior to placement of final gravel layer) (Bareither et al 2012b (3) biocompression (El-Fadel and Khoury 2000;Hossain et al 2003;Marques et al 2003;Gourc et al 2010;Bareither et al 2012a). Immediate compression is stress-dependent and occurs rapidly with an increase in vertical stress.…”

mentioning

confidence: 99%

“…The two settlement curves in Fig. 1 are drawn with respect to laboratory-and field-scale testing of MSW (e.g., Bareither et al 2010;Gourc et al 2010;Bareither et al 2012a) and apply to a given MSW composition under the same constant vertical stress. The lower-bound settlement curve applies to a scenario where MSW decomposition is inhibited (e.g., dry, conventional landfill) and settlement primarily is attributed to physical compression processes of immediate compression and mechanical creep.…”

mentioning

confidence: 99%

“…1 exist for scenarios where a fraction of the MSW organic waste decomposes. (2000); however, MSW settlement modeling has been the focus of significant research since 2000 (e.g., Marques et al 2003;Hossain and Gabr 2005;Machado et al 2009;Babu et al 2010;Chen et al 2010;Gourc et al 2010;Chen et al 2012) and a comparison and discussion of currently available settlement models has not been conducted.…”

mentioning

confidence: 99%

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Assessment of municipal solid waste settlement models based on field-scale data analysis

Bareither

Kwak²

2015

Waste Management

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ASSESSMENT OF MUNICIPAL SOLID WASTE SETTLEMENT MODELS BASED ON FIELD-SCALE DATA ANALYSISAn evaluation of municipal solid waste (MSW) settlement model performance and applicability was conducted based on analysis of two field-scale datasets: (1) Yolo and (2) Deer Track Bioreactor Experiment (DTBE). Yolo data were used to assess a multi-layer immediate settlement analysis and model applicability to represent compression behavior in conventional and bioreactor landfills. The DTBE included four waste layers constituting a composite waste thickness. Settlement data for each waste layer were simulated to assess variation in model parameters, and a composite waste settlement prediction was completed via applying average DTBE model parameters to each waste layer and summing settlement to represent measured settlement at the top of the waste column.The multi-layer immediate settlement analysis developed for Yolo provides a framework to estimate the initial waste thickness and waste thickness at end-of-immediate compression.An empirical estimate of the immediate compression ratio (C c ' = 0.23) combined with precompression stress (10 to 15 kPa) and recompression ratio = 1/10•C c ' yielded the target immediate settlement for the Yolo test cells. A precompression stress and recompression ratio may need to be included when using empirical estimates of C c ' to predict immediate settlement under small vertical stress (e.g., less than 15 kPa). shown to provide accurate simulations and predictions of field-scale datasets.The Gourc model included the lowest number of total and optimized model parameters and yielded high statistical performance for the DTBE prediction (R 2 = 0.99). The Gourc model was also found to be the most applicable and straightforward to implement and is recommended for use in practice. All other models that included unique functions for immediate compression, mechanical creep, and biocompression (Machado, Sowers, Marques, Babu, and Chen-2012) are capable of yielding satisfactory MSW simulations and predictions; however, additional model and/or model constraints are necessary for implementing these models.iv ACKNOWLEDGEMENTS

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Section: Biocompressionmentioning

confidence: 99%

Section: Biocompressionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Assessment of municipal solid waste settlement models based on field-scale data analysis

Bareither

Kwak²

2015

Waste Management

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Balkenbiegeversuche an zwei Tonen und Verformbarkeitsnachweis für eine multifunktionale Deponieabdichtung

Vrettos

Becker

2017

Geotechnik

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Für den Nachweis der Verformbarkeit mineralischer Deponieabdichtungen werden Angaben zu den Grenzzugdehnungen benötigt. Biegeversuche stellen eine praxisnahe Alternative zur indirekten Ermittlung dieser Werte dar. Zwei Tone wurden diesbezüglich untersucht. Zum Einsatz kamen Drei‐ und Vier‐Punkt‐Versuche sowie Versuche mit einer flächigen Belastung. Die Rückrechnung der Dehnungen aus den Durchbiegungen erfolgt anhand eines FEM‐Modells des Balkens als Kontinuum und ein Vergleich mit gängigen Methoden der Balkentheorie wird vorgenommen. Die Ergebnisse werden dann für den Nachweis der Verformbarkeit einer multifunktionalen Abdichtung eines Deponie‐auf‐Deponie‐Systems verwendet. Die Beanspruchungen im Deponiekörper werden ebenfalls mittels der FEM bestimmt. Die bodenmechanischen Eingangsparameter werden aus der Auswertung von In‐situ Messungen hergeleitet. Der Beitrag beschreibt die Versuchstechnik, die experimentellen Ergebnisse, die Auswertungsprozedur sowie die einzelnen Schritte der Nachweisführung.

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Municipal Solid Waste

Castaldi¹,

Chi²,

Ciuta³

et al. 2020

Handbook on Characterization of Biomass, Biowaste and Related by-Products

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Decoupling MSW settlement into mechanical and biochemical processes – Modelling and validation on large-scale setups

Cited by 79 publications

References 21 publications

Assessment of municipal solid waste settlement models based on field-scale data analysis

Assessment of municipal solid waste settlement models based on field-scale data analysis

Balkenbiegeversuche an zwei Tonen und Verformbarkeitsnachweis für eine multifunktionale Deponieabdichtung

Municipal Solid Waste

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