Gas production during refuse decomposition

Farquhar, Grahame J.; Rovers, Frank A.

doi:10.1007/bf00585092

Cited by 251 publications

(120 citation statements)

References 2 publications

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“…Generally, it is accepted that landfills undergo at least four phases of decomposition, (1) an initial aerobic phase, (2) an anaerobic acid phase, (3) an initial methanogenic phase and (4) a stable methanogenic phase [21][22] . There is a strong relationship between the state of refuse decomposition and its associated leachate characteristics.…”

Section: Discussionmentioning

confidence: 99%

Toxicity Testing and the Effect of Landfill Leachate in Malaysia on Behavior of Common Carp (Cyprinus carpio L., 1758; Pisces, Cyprinidae)

Alkassasbeh¹,

Heng²,

Surif³

2009

American J. of Environmental Sciences

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Problem Statement: Landfill leachate had been implicated in environmental pollution, developmental anomalies, birth defect and surface and groundwater pollution worldwide. This study has been conducted to determine the toxicity of landfill leachate from three different landfills in Malaysia on fry common carp (Cyprinus carpio L., 1758; Pisces, Cyprinidae) in combination with some physico-chemical parameters analysis. Approach: Leachates were collected from Air Hitam (AHL), Ampar Tenang (ATL) and Sungai Sedu (SSL) landfills. The experiments were performed as three replicates using a total of 180 carps for each definitive test. The semi-static renewal method of acute toxicity test was used. The data obtained were statically evaluated by the use of the EPA computer program based on Finney's Probit Analysis Method. Results: The leachate used in this study had an invariable of (1640-7600 mg L −1 ) COD and (321.22-956.86 mg L −1 ) Ammonical-N. The 96 h LC 50 values of landfills leachate from the three landfills using fry C. carpio individuals with an average weight of 0.92±0.24 g and average length of 3.83±0.19 cm were found to be 1.132, 2.0 and 3.822% respectively. Among the behavioral changes observed for the individual fish at different leachate concentrations, decline in general activity, loss of balance, breathing difficulties, excessive mucosal secretion and gathering at the surface for breathing. Conclusion: This study of acute toxicity to the recommended fish species, C. caprio, is considered the first in Malaysia. Further research with toxicity testing methods directly on fish will be very useful in assessing possible ecological risk assessment of landfill leachate.

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Section: Discussionmentioning

confidence: 99%

Toxicity Testing and the Effect of Landfill Leachate in Malaysia on Behavior of Common Carp (Cyprinus carpio L., 1758; Pisces, Cyprinidae)

Alkassasbeh¹,

Heng²,

Surif³

2009

American J. of Environmental Sciences

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“…However, as more wastes are added and particularly if the landfill is subsequently capped, overlying layers impede airflow and the dominant biochemical reactions become anaerobic. The anaerobic degradation process is a major process of MSW degradation [7,8,9,10]. Degradable component in MSW is mainly of cellulose [11], substrate of anaerobic is simplified to be cellulose hydrate by considering that the degradable component of MSW contains a large amount of intra-particle water.…”

Section: One-stage Anaerobic Degradation Model Of Mswmentioning

confidence: 99%

Analysis of Degradation-compression-seepage Interaction in MSW Landfills by a BCHM Coupled Model

Liu¹,

Li²,

Chen³

2014

Proceedings of the 2014 International Conference on Mechanics and Civil Engineering

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Abstract. Municipal solid waste (MSW) is a special kind of porous media with a large amount of degradable composition. A biochemo-hydro-mechanical (BCHM) coupled model is presented with a consideration of MSW degradation characteristic different from traditional soils. The cellulose anaerobic degradation model is used to describe landfill gas and leachate generation during biodegradation. MSW deformation behavior and seepage characteristic are expressed by considering solid skeleton soften due to biodegradation. The seepage and settlement behaviors in a hypothetical landfill with high kitchen waste content are simulated by the presented model. The results demonstrate the problems in landfills with high kitchen waste content, such as leachate mound, leachate-gas movement mutual retardation, and significant closure settlement.

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“…Farquhar & Rovers 1973), although for many years it was viewed primarily as an explosion hazard (e.g. Williams & Aitkenhead 1991) rather than an asset.…”

Section: Landfill Gasmentioning

confidence: 99%

Hydrogeological challenges in a low-carbon economy

Younger

2013

QJEGH

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Hydrogeology has traditionally been regarded as the province of the water industry, but it is increasingly finding novel applications in the energy sector. Hydrogeology has a longstanding role in geothermal energy exploration and management. Although aquifer management methods can be directly applied to most high-enthalpy geothermal reservoirs, hydrogeochemical inference techniques differ somewhat owing to peculiarities of high-temperature processes. Hydrogeological involvement in the development of ground-coupled heating and cooling systems using heat pumps has led to the emergence of the sub-discipline now known as thermogeology. The patterns of groundwater flow and heat transport are closely analogous and can thus be analysed using very similar techniques. Without resort to heat pumps, groundwater is increasingly being pumped to provide cooling for large buildings; the renewability of such systems relies on accurate prediction and management of thermal breakthrough from reinjection to production boreholes. Hydrogeological analysis can contribute to quantification of accidental carbon emissions arising from disturbance of groundwater-fed peatland ecosystems during wind farm construction. Beyond renewables, key applications of hydrogeology are to be found in the nuclear sector, and in the sunrise industries of unconventional gas and carbon capture and storage, with high temperatures attained during underground coal gasification requiring geothermal technology transfer.

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Gas production during refuse decomposition

Cited by 251 publications

References 2 publications

Toxicity Testing and the Effect of Landfill Leachate in Malaysia on Behavior of Common Carp (Cyprinus carpio L., 1758; Pisces, Cyprinidae)

Toxicity Testing and the Effect of Landfill Leachate in Malaysia on Behavior of Common Carp (Cyprinus carpio L., 1758; Pisces, Cyprinidae)

Analysis of Degradation-compression-seepage Interaction in MSW Landfills by a BCHM Coupled Model

Hydrogeological challenges in a low-carbon economy

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