Abstract:Estimation of temporal changes undergone by municipal solid waste (MSW) in its physico–chemico–geomechanical properties in a bioreactor landfill (BLF) is essential for: (i) efficient landfilling, (ii) establishing the state of decomposition of MSW with time and (iii) deciding upon the appropriate time to initiate landfill mining. To achieve this, a series of destructive (DTs) and non-destructive tests (NDTs) can be conducted on the MSW samples in the BLF. With this in view, several DTs were conducted on these … Show more
“…McKnight et al ( 2015 ) collected samples from the testing locations at a closed landfill in Florida, USA, and the more degraded group presented lower q c values. Mohammad et al ( 2021 ) reached a similar conclusion for fresh and old MSW in a bioreactor landfill in Mumbai, India.…”
Section: Resultsmentioning
confidence: 65%
“…There was an increase in studies conducted in Brazil, India, and China in the last five years. Only two studies included all types of investigation (Van Elk et al 2014 ; Yin et al 2017 ); six studies included in situ testing and seismic methods (Castelli and Maugeri 2014 ; Castelli and Lentini 2017 ; Castelli et al 2017 ; Naveen 2018 ; Mohammad et al 2021 ; Naveen et al 2021 ), and one study included seismic and geoelectrical methods (Konstantaki et al 2015 ). Fig.…”
Section: Resultsmentioning
confidence: 99%
“… 0.11 (avg.) – Yin et al ( 2017 ) – – 2–40 Santoso et al ( 2020 ) – – 3–7 Mohammad et al ( 2021 ) 1–4 < 0.06 – Naveen et al ( 2021 ) – – 2–14 …”
Municipal solid waste (MSW) management is challenging as a whole. Global waste generation is expected to continue to increase in the coming years, and landfills are currently the primary destination. Therefore, the stability of these structures must be carefully evaluated to prevent failures and associated health and pollution risks, which implies the determination of waste properties using more reliable approaches. This paper presents a scoping review of field data from MSW landfills and outlines suggestions for future work. Studies published in the past twenty years were selected following a systematic search process in databases. Aspects discussed include (1) strength parameters and soil behavior type from in situ testing, (2) elastic moduli from seismic wave propagation, and (3) moisture content from geoelectrical measurements. Although the values of geotechnical parameters have varied due to waste heterogeneity and applied methods, the trends observed with depth and age could be compared. Research opportunities involve the spatial analysis of mechanical properties at a given site, seismic response of landfills with high organic content and saturation degree, interpretation of long-term resistivity monitoring, and combination of electrical properties to assess the degradation stages within the waste mass.
“…McKnight et al ( 2015 ) collected samples from the testing locations at a closed landfill in Florida, USA, and the more degraded group presented lower q c values. Mohammad et al ( 2021 ) reached a similar conclusion for fresh and old MSW in a bioreactor landfill in Mumbai, India.…”
Section: Resultsmentioning
confidence: 65%
“…There was an increase in studies conducted in Brazil, India, and China in the last five years. Only two studies included all types of investigation (Van Elk et al 2014 ; Yin et al 2017 ); six studies included in situ testing and seismic methods (Castelli and Maugeri 2014 ; Castelli and Lentini 2017 ; Castelli et al 2017 ; Naveen 2018 ; Mohammad et al 2021 ; Naveen et al 2021 ), and one study included seismic and geoelectrical methods (Konstantaki et al 2015 ). Fig.…”
Section: Resultsmentioning
confidence: 99%
“… 0.11 (avg.) – Yin et al ( 2017 ) – – 2–40 Santoso et al ( 2020 ) – – 3–7 Mohammad et al ( 2021 ) 1–4 < 0.06 – Naveen et al ( 2021 ) – – 2–14 …”
Municipal solid waste (MSW) management is challenging as a whole. Global waste generation is expected to continue to increase in the coming years, and landfills are currently the primary destination. Therefore, the stability of these structures must be carefully evaluated to prevent failures and associated health and pollution risks, which implies the determination of waste properties using more reliable approaches. This paper presents a scoping review of field data from MSW landfills and outlines suggestions for future work. Studies published in the past twenty years were selected following a systematic search process in databases. Aspects discussed include (1) strength parameters and soil behavior type from in situ testing, (2) elastic moduli from seismic wave propagation, and (3) moisture content from geoelectrical measurements. Although the values of geotechnical parameters have varied due to waste heterogeneity and applied methods, the trends observed with depth and age could be compared. Research opportunities involve the spatial analysis of mechanical properties at a given site, seismic response of landfills with high organic content and saturation degree, interpretation of long-term resistivity monitoring, and combination of electrical properties to assess the degradation stages within the waste mass.
“…This is especially important for high landfill slopes where there is a risk of landslides. For stability analysis, a number of tests of the state and geotechnical parameters of the deposited waste are necessary [61,74]. Comprehensive engineering solutions were applied to improve the landfill stability conditions, including berms, horizontal reinforcements with geogrids, retaining structures and waste compaction [61].…”
Landfills are elements of the waste management system, without possibility of further reclaiming, according to the requirements of a closed-loop economy, but with the possibility of transforming the area into other functions. The research combined monitoring of plant species, suggesting the composition of vegetation cover for pro-ecological management, analysis of functional and infrastructural incorporation of the landfill in the surrounding landscape, and proposals for reclamation and social application. An assessment of geotechnical safety was also made. Modernization of the landfill suggests that the pressure placed on other untouched locations should decrease. The designed space allows reintroducing socio-ecological life into this degraded area. Taking advantage of the character of the area, including variable development and significant landscape potential on the outskirts of a large city in the vicinity of protected areas, there is the possibility of creating new spatial quality following the standards of modern architecture-urban planning. One of the innovative elements of the project is the implementation of energy from renewable sources, including landfill biogas, photovoltaic panels and heat pumps. The development design includes social expectations and adaptation of new techniques to functioning in times of increased sanitary threats. The proposed design direction may be considered as a recommended trend for the sustainable development of urban areas.
“…The effective measures to ensure the normal operation of the landfill site are to establish a leachate collection and removal system and observe the impact of leachate on the mechanical properties of concrete [5][6][7][8] . It is necessary to monitor the leachate to prevent further deterioration of the surrounding environment of the landfill [9][10][11] .…”
The accumulation of municipal solid waste (MSW) in landfills often becomes a serious pollution source of geological environment and groundwater. The geological environment is the carrier of the landfill, and also the main pollution object of the landfill. The main pollution modes of the landfill site to the surrounding geological environment are purging, flushing, leachate, etc. If the leachate leakage cannot be found and repaired in time, it will cause serious harm to the geological environment and groundwater. The cost of geological environment and groundwater sampling through borehole surveys is high. Therefore, monitoring the seepage path and migration law of leachate is of great significance for determining the pollution range of the landfill site. In this study, by adjusting the grids of different sizes and changing the flow rate of leachate, the monitoring of fluid migration of different types of leachate was strengthened. The results show that the parallel potential monitoring method can quickly reflect the location and number of leachate points and the migration law of leachate. It provides effective reference data for landfill leachate monitoring.
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