Analysis of landfill design variables based on scientific computing

Cuartas, Miguel; López, Armando; Pérez, Fernando Martín; Lobo, Amaya

doi:10.1016/j.wasman.2017.10.043

Cited by 24 publications

(17 citation statements)

References 29 publications

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“…The network helped in defining failure endangered zones, for which the approach of the observational method was applied. It allowed the analysis of the vertical and horizontal displacement measurements of the landfill body during exploitation time [24,25]. This type of monitoring system allowed the evaluation of the behavior of all slope movement influenced by different groundwater flow conditions, and engineering works execution.…”

Section: Slope Stability Analyses Incorporating Reinforcementsmentioning

confidence: 99%

Landfill Slope Stability Improvement Incorporating Reinforcements in Reclamation Process Applying Observational Method

et al. 2020

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This paper concerns a case study presenting one of the biggest landfills in Poland that required application of complex engineering works to extend the deposing capacity of the structure. The shear strength parameters of the subsoil and waste material used for analyses were based on geotechnical investigation and were then applied in slope stability analyses of the landfill. For the purpose of safety management of the new development and reclamation plan for the landfill, an observational method was applied to increase the geotechnical safety of the structure. The slope reinforcement methods mainly included the geogrid, geocomposite, and berms construction. However, much of the uncertainty associated with the stability of the geogrid-reinforced slope is related to the time-dependent deformation of geosynthetic materials. For the purpose of changes in the geogrid parameters with time, the samples were excavated from the landfill slope after 20 years of exploitation and analyzed in the laboratory. The tests allowed precise determination of the material properties, changing geometry, and mechanical properties like tensile strength and strain. Obtained results were compared to parameters of the brand-new geogrid samples. The tests indicated only insignificant changes in geosynthetics, physical, or mechanical performance properties, and the slope has not been compromised in its stability or performance.

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Section: Slope Stability Analyses Incorporating Reinforcementsmentioning

confidence: 99%

Landfill Slope Stability Improvement Incorporating Reinforcements in Reclamation Process Applying Observational Method

et al. 2020

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“…Hence, despite the by now well-documented problems of foul-smelling and toxic gas emissions, water and soil pollution caused by the leachate, explosion and fire hazards, and contribution to global warming, [82,97] landfills will continue to be used widely for urban waste disposal for want of a better option [14,24,48,62,107,115,132]. No other solid waste management technology can handle substances of such varied characteristics as sanitary landfills can nor is any other technology as inexpensive, for each tonne of assorted waste handled, as sanitary landfills.…”

Section: Capture and Utilization Of Landfill Gasmentioning

confidence: 99%

The myth and the reality of energy recovery from municipal solid waste

Abbasi

2018

Energ Sustain Soc

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Background: Any manner of development can be sustainable only if the waste generated by it is not allowed to accumulate but is fully reused/recycled/recovered. Among the strategies to attain this goal have been the attempts to recover energy from municipal solid waste (MSW). About 60% of MSW is carbonaceous, consisting of materials which can either be biodegraded into fuels like methane or incinerated, thereby generating utilizable energy. MSW also contains several components-like metallic scrap and glass pieces-which can be reused or recycled, thereby achieving energy conservation. Given these attributes, MSW appears to be a potential source of energy and resources. Indeed, this belief that MSW is usable if only we try sincerely enough to do so prompts most of us to keep generating much more MSW than is warranted. But how realizable really is the energy potential of MSW? What perils loom into view when we actually set out to utilize MSW as an energy source? The present study addresses these crucially important questions. Methods: The work is based on a critical content analysis of the prior art. Results: The generation of MSW has consistently outpaced the world's efforts to dispose of it cleanly, and the energy (and material) recovery from MSW is easier said than done. In most instances, what is technically feasible is economically unfeasible. And what is economically feasible-such as setting the waste on fire as is often done in developing countries-is exceedingly harmful to the environment and the human health. Measures such as sanitary landfilling and incineration create as many new problems as the old ones they solve. Moreover, despite the use of these less-than-adequate technologies, a major portion of MSW generated in the world lies untreated. Conclusions: As the MSW output is expected to double by 2025, this situation is only set to become worse. Rising tides of E-waste would compound the problem even further. Hence, enormous stress should be put on the reduction of MSW generation by controlling wanton consumerism and wastage, rather than continuing with it in the false hope that technology will soon provide a magical solution and eliminate the problem.

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“…The inherent heterogeneity of waste, as well as the different environmental and operational conditions, will produce an extensive range of biodegradation processes that usually will extend through decades. In landfills, the rate of biodegradation increases as leachate is recirculated [52][53][54]. However, they are slower than in anaerobic digestion systems.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Plastics under Anaerobic Conditions: A Short Review

et al. 2020

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Plastic waste is an issue of global concern because of the environmental impact of its accumulation in waste management systems and ecosystems. Biodegradability was proposed as a solution to overcome this problem; however, most biodegradable plastics were designed to degrade under aerobic conditions, ideally fulfilled in a composting plant. These new plastics could arrive to anaerobic environments, purposely or frequently, because of their mismanagement at the end of their useful life. This review analyzes the behavior of biodegradable and conventional plastics under anaerobic conditions, specifically in anaerobic digestion systems and landfills. A review was performed in order to identify: (a) the environmental conditions found in anaerobic digestion processes and landfills, as well as the mechanisms for degradation in those environments; (b) the experimental methods used for the assessment of biodegradation in anaerobic conditions; and (c) the extent of the biodegradation process for different plastics. Results show a remarkable variability of the biodegradation rate depending on the type of plastic and experimental conditions, with clearly better performance in anaerobic digestion systems, where temperature, water content, and inoculum are strictly controlled. The majority of the studied plastics showed that thermophilic conditions increase degradation. It should not be assumed that plastics designed to be degraded aerobically will biodegrade under anaerobic conditions, and an exact match must be done between the specific plastics and the end of life options that they will face.

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Analysis of landfill design variables based on scientific computing

Cited by 24 publications

References 29 publications

Landfill Slope Stability Improvement Incorporating Reinforcements in Reclamation Process Applying Observational Method

Landfill Slope Stability Improvement Incorporating Reinforcements in Reclamation Process Applying Observational Method

The myth and the reality of energy recovery from municipal solid waste

Degradation of Plastics under Anaerobic Conditions: A Short Review

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