Geotechnical properties of fresh municipal solid wastes with different compositions under leachate exposure

Xie, Yuekai; Xue, Jianfeng; Gnanendran, C. T.; Xie, Karyn

doi:10.1016/j.wasman.2022.06.020

Cited by 14 publications

(1 citation statement)

References 68 publications

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“…Differential settlement and structural integrity of the landfill can lead to overestimating the permeability of MSW. This can result in leachate accumulation in specific areas of the landfills and uneven waste degradation [2][3][4][5][6]. The majority of waste in India is disposed of in the landfill.…”

Section: Introductionmentioning

confidence: 99%

Geotechnical Characterization of Municipal Solid Waste in Raipur City, Chhattisgarh

Hari Naga Prasad,

Chouksey

2024

J. Phys.: Conf. Ser.

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Municipal solid waste (MSW) is challenging to dispose of on land due to its varied composition, complicating landfill management and upkeep. The variety of waste materials leads to complexity, which poses significant problems for landfill design. Waste in landfills is more diverse, making management and treatment more challenging. Due to their impact on settlement rates and potential risks of slope instability, aspects such as compaction methods, liner system integrity, and waste composition play a critical role in controlling landfill stability. The physical characteristics and strength parameters of MSW are necessary to determine the stability of the landfill. The Geotechnical characteristics of MSW are crucial for the design of the landfill. MSW was disposed at the Raipur landfill, which has been operating for about 6 years, the sample at 1m depth is taken under the present study. It observed that 30% of MSW was found to be a soil-like material after segregation. The geotechnical properties are determined with soil-like material, which is classified as well-graded sand (SW) as per IS classification. The geotechnical properties such as moisture content, grain size distribution, unit weight, specific Gravity, compaction, cohesion, friction angle, and permeability are determined. It is observed that the geotechnical properties also match the properties of sand. An attempt is made to check out that the soil-like material retained can be used as a fill material as the properties are similar to sand. Comparative analysis of existing landfill MSW geotechnical properties is also done to get a clear and strong idea about the geotechnical properties. Numerical analysis is conducted with the obtained geotechnical properties, shape and size parameters are assumed as per the previous literature. It is observed that the factor of safety obtained from the numerical analysis (SLOPE/W) satisfies the requirements and the design criteria of being safe for solid waste disposal and its operation.

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Section: Introductionmentioning

confidence: 99%

Geotechnical Characterization of Municipal Solid Waste in Raipur City, Chhattisgarh

Hari Naga Prasad,

Chouksey

2024

J. Phys.: Conf. Ser.

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Compressibility characteristics of municipal solid waste considering multiple factors

Lou,

Zhang,

et al. 2024

Environ Sci Pollut Res

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Experimental investigations of water retention curves of fresh and decomposed municipal solid wastes under multiple drying and wetting cycles

Xie,

Xue

2024

Acta Geotech.

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Municipal solid wastes (MSWs) disposed in landfills are generally exposed to drying and wetting cycles because of the variation in environmental conditions, decomposition of organics and leachate recirculation. This paper studies the water retention curves (WRCs) of fresh and degraded MSWs under various numbers of drying and wetting cycles with water and leachate exposure. The result indicates that the water retention capacities of MSWs decrease with drying and wetting cycles. The maximum hysteresis between the drying and wetting cycles is observed in the first cycles for all MSW samples. The WRCs of medium to highly decomposed MSWs under drying and wetting cycles are similar to those of soils. The WRCs of fresh MSWs can undergo substantial changes due to the discharge of intra-particle moisture caused by decomposition and compression. For both fresh and decomposed MSWs, the WRCs stabilize after 3 drying and wetting cycles. However, only the MSWs of one initial composition with similar void ratios were investigated. Further research should be conducted to investigate the water retention behavior of MSWs with diverse initial compositions (e.g., food contents) and void ratios.

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Geotechnical properties of fresh municipal solid wastes with different compositions under leachate exposure

Cited by 14 publications

References 68 publications

Geotechnical Characterization of Municipal Solid Waste in Raipur City, Chhattisgarh

Geotechnical Characterization of Municipal Solid Waste in Raipur City, Chhattisgarh

Compressibility characteristics of municipal solid waste considering multiple factors

Experimental investigations of water retention curves of fresh and decomposed municipal solid wastes under multiple drying and wetting cycles

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