Effects of Temperature on the Long-Term Behaviour of Waste Degradation, Emissions and Post-Closure Management Based on Landfill Simulators

Wang, Y.

doi:10.2174/1876400201205010019

Cited by 16 publications

(11 citation statements)

References 23 publications

(32 reference statements)

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“…In general, waste temperatures were cooler toward the ground surface, increased to a maximum temperature at the middle depths of the waste mass, and then decreased as depth approached the bottom liner. Overall, measured waste temperatures were similar to those reported in the literature (Yesiller et al 2005;Hanson et al 2010a;Yesiller et al 2011;Wang et al 2012). …”

Section: Temperaturesupporting

confidence: 85%

“…The distribution and range of waste temperatures with depth is illustrated by the curvilinear relationship presented in Figure 2.12. Several studies presented in the literature suggested a correlation exists between optimal temperature and elevated waste degradation and gas production to an extent (Rees 1980;Hartz et al 1982;Mata-Alvarez and Martinez-Viturtia 1986;Blakey et al 1997;Yesiller et al 2011;Wang et al 2012). …”

Section: Temperaturementioning

confidence: 99%

“…Factors such as depth of waste, rate of filling, climatic conditions, waste properties, and particularly waste moisture content have been determined to affect waste temperature (e.g., Rowe 1998, Yesiller et al 2005, and Hanson et al 2010bWang et al 2012). Temperature affects bacterial growth and chemical reactions within a landfill including the solubility of many chemicals (Sethi et al 2013).…”

Section: Temperaturementioning

confidence: 99%

“…In comparison to the physical and other engineering properties of MSW, limited studies have been conducted on the compaction characteristics of MSW (Harker and Juds 1976;Ham et al 1978;Harris 1979;Surprenant and Lemke 1994;Gabr and Valero 1995;Collins 2001;Marques et al 2002;Hettiarachchi 2005;Itoh et al 2005;Fakher 2006;Von Stockhausen 2007;Reddy et al 2009b;Wong 2009;Wang et al 2012). A laboratory investigation was performed by Harker and Juds (1976) to investigate the effectiveness of roller compaction on individual waste constituents (e.g., glass bottles, aluminum cans, various metal containers).…”

Section: Compaction Of Mswmentioning

confidence: 99%

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Effects of Waste Placement Practices on the Engineering Response of Municipal Solid Waste

Cox¹

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Effects of Waste Placement Practices on the Engineering Response of MunicipalSolid Waste Jason T. Cox An extensive laboratory and field investigation was conducted at Santa Maria Regional Landfill (SMRL) in Santa Maria, California to determine the effects of waste placement practices on the engineering response of municipal solid waste (MSW). Laboratory and field testing was used to determine the engineering properties and monitor field response of MSW.The specific gravity (G s ) of manufactured MSW (MMSW), fresh MSW (FMSW), and old MSW (OMSW) was determined experimentally using a modified version of standard soil testing procedures. Effects of particle size, compactive effort, and degradation on the specific gravity of waste were evaluated. Specific gravity of manufactured waste samples increased with decreasing particle size, with compaction, and with increased degradation. The average specific gravity of uncompacted MMSW samples was 1.333, 1.374, and 1.424 for coarse, medium, and fine particle sizes, respectively. Specific gravity of coarse, medium, and fine MMSW samples compacted at dry of optimum ( = 30%) was determined to be 1.497, 1.521, and 1.552, respectively and at wet of optimum ( = 90%) to be 1.500, 1.542, and 1.570, respectively. The compacted and uncompacted specific gravity of fresh MSW was lower than manufactured and old MSW. The average G s of uncompacted and compacted fresh MSW was 1.072 and 1.208, respectively whereas old MSW had G s of 2.201.v Additional physical and engineering properties of MSW were determined for fresh and old wastes. A total of 8 magnetic extensometer settlement arrays and 4 thermocouple arrays were installed in old wastes. The settlement and temperature data were collected for an approximate duration of 1 year. In addition, laboratory experiments were conducted to determine the particle size distribution, organic content, and moisture content of fresh waste sampled from the active face of the landfill and from old waste sampled from different depths.The particle size distribution of OMSW was comparable to a well-graded coarsegrained soil. The average baseline moisture content of incoming MSW at SMRL was 42.7% (dry-weight basis). The average moisture content of residential MSW, commercial MSW, and self-delivered MSW were determined to be 57.7, 46.3, and 12.0%, respectively. The organic content of fresh and old MSW was determined to be 77.2 and 23.5%, respectively. Temperature increased over time due to heat generation of the waste mass. The temperature increased on average 3 to 6°C between the initial and final day of measurements for wastes that were 0.3 to 9 years old.Fresh and old wastes at SMRL exhibited unique compression behavior. A majority of the waste was undergoing secondary compression characterized using a secondary compression ratio ( ′ ) ranging from 0.013 to 0.067 with an average of 0.030. In addition, the fresh and old wastes exhibited recompression behavior. Fresh waste lifts were determined to be slightly overconsolidated such that the self-weig...

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Section: Temperaturesupporting

confidence: 85%

Section: Temperaturementioning

confidence: 99%

Section: Temperaturementioning

confidence: 99%

Section: Compaction Of Mswmentioning

confidence: 99%

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Effects of Waste Placement Practices on the Engineering Response of Municipal Solid Waste

Cox¹

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“…The decomposition of waste material depends upon biochemical processes and other parameters such as time, temperature, and moisture content (Fatta et al, 1999;Karthikeyan et al, 2008;Wang et al, 2012a). Pollution from landfills is associated with waste composition, and in India, organic waste (wet waste) has a greater share (>50%) of the total composition (Joshi and Ahmed, 2016).…”

Section: Introductionmentioning

confidence: 99%

Statistical modelling and assessment of landfill leachate emission from fresh municipal solid waste: A laboratory-scale anaerobic landfill simulation reactor study

2020

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Quantification, measurement of quality, post-treatment, and leachate control has been a significant problem due to the dumping of waste in an unscientific manner across the globe, and especially in developing countries like India. In this context, the objective of this study was to investigate the degradation of fresh mixed municipal solid waste (MSW) in an anaerobic landfill reactor operated with rainfall addition in laboratory conditions. Experiments were carried out in a landfill reactor of 1 m length × 1 m width × 1.1 m height. The reactor was simulated with 50 years weighted average actual rainfall rate of India. It contained the waste composition of 73% wet waste (food and kitchen) and 27% dry waste (paper, plastic, wood, textiles, and others). The leachate parameters were continually monitored for 39 weeks. In the fresh MSW landfill reactor it was evident that concentrations of leachate parameters were high initially, and there was a significant decrease in BOD5 (7041–39310 mg L−1), COD (15692–71630 mg L−1) and TS (9077–33200 mg L−1) in leachate. Therefore, rainfall had a direct influence on leachate quality. The developed first-order decay models were used for BOD5, COD, and total solids with adjusted R2 of 0.83, 0.92, and 0.96, respectively. Therefore, this model can be applied for leachate strength estimation at any given time from the period of deposition of waste under similar rainfall and waste compositions, and is largely applicable in India and tropical areas. This study is expected to be a good simulation for cities with the waste composition of high wet waste (>70%) as the estimations of important design parameters such as BOD5, COD, VFA, and NH4+-N were studied in this research. As the importance of moisture (precipitation) has been established in this study, some moisture additions can be designed in areas with low rainfall, such as arid zones.

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Satellite-Based Environmental Impact Assessment of MSW Dumps

Faizi

Mahmood

Iftikhar

2021

Handbook of Smart Materials, Technologies, and Devices

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Effects of Temperature on the Long-Term Behaviour of Waste Degradation, Emissions and Post-Closure Management Based on Landfill Simulators

Cited by 16 publications

References 23 publications

Effects of Waste Placement Practices on the Engineering Response of Municipal Solid Waste

Effects of Waste Placement Practices on the Engineering Response of Municipal Solid Waste

Statistical modelling and assessment of landfill leachate emission from fresh municipal solid waste: A laboratory-scale anaerobic landfill simulation reactor study

Satellite-Based Environmental Impact Assessment of MSW Dumps

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