Direct Evaporation from the Waste Body and its Influence on Leachate Generation in Landfills in Arid Areas

Abdoli, Mohammad Ali; Ramke, Hans-Günter; Ghiasinejad, Hossein

doi:10.3923/jbs.2010.107.111

Cited by 5 publications

(6 citation statements)

References 2 publications

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“…We found that a change of the evaporation depth from 0.2 m (the default value used here) to 0.5 m would reduce the predicted amount of leachate generated during the first four years by only 5%. This indicates that evaporation is not an important variable during leachate modelling as has been also stated by Abdoli et al (2010).…”

Section: Sensitivity Analysis Of the Mwbmsupporting

confidence: 57%

“…Note that when the difference of Prec -Evap is negative, a value of 0 is always applied. It is difficult to calculate evaporation from uncovered solid wastes, since complex processes occur (Bendz and Bengtsson 1996;Blight et al, 1992aBlight et al, , 1992b) whilst, at the same time, there have been limited attempts to model it (Abdoli et al, 2010). Caution is needed on whether the model needs to calculate evaporation directly from waste exposed to the surface or after a soil cover has been placed in the waste.…”

Section: Description Of Equationsmentioning

confidence: 99%

“…Caution is needed on whether the model needs to calculate evaporation directly from waste exposed to the surface or after a soil cover has been placed in the waste. According to Abdoli et al (2010), evaporation in the latter case is negligible, but may not be negligible in the former case. Actually, Abdoli et al (2010) performed experiments and correlated direct evaporation from the solid wastes in landfills with pan evaporation.…”

Section: Description Of Equationsmentioning

confidence: 99%

“…According to Abdoli et al (2010), evaporation in the latter case is negligible, but may not be negligible in the former case. Actually, Abdoli et al (2010) performed experiments and correlated direct evaporation from the solid wastes in landfills with pan evaporation. In our case, the evaporation from a soil surface -instead of the wastes themselves -was considered, since soil is actually placed on top of each daily cell at the end of a day.…”

Section: Description Of Equationsmentioning

confidence: 99%

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A water budget model for operating landfills: An application in Greece

Komilis

Athiniotou²

2014

Waste Manag Res

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The goal of the work was to develop and verify a one-dimensional monthly water budget model (MWBM) to predict leachate generation rates from operating landfills. Although there has been a considerable modelling work on the hydraulic behaviour of landfills after they reach closure, less attention has been given on such modelling for operating landfills that have a continuously changing geometry. A MWBM was developed here that accounted for landfill cell development, precipitation and evaporation, the change of the water holding capacity of a waste cell and waste decomposition. The MWBM was verified using a two-year leachate generation rate database from a new operating sanitary landfill in Greece. The MWBM results showed a very good agreement with field data whilst it was observed that peak precipitation rates followed a parallel trend with peak leachate generation rates. A distinct two-month lag phase between the model results and actual values was observed during a certain period, which is a likely indication of the presence of channelling within the waste mass. A sensitivity analysis performed in the MWBM showed that the leachate is affected by the initial municipal solid waste moisture content as well as by the precipitation rates. A linear regression empirical model showed that precipitation can still be an adequate predictor of leachate generation rates in operating landfills.

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Section: Sensitivity Analysis Of the Mwbmsupporting

confidence: 57%

Section: Description Of Equationsmentioning

confidence: 99%

Section: Description Of Equationsmentioning

confidence: 99%

Section: Description Of Equationsmentioning

confidence: 99%

See 2 more Smart Citations

A water budget model for operating landfills: An application in Greece

Komilis

Athiniotou²

2014

Waste Manag Res

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“…In most arid and semiarid areas, moisture recharge during the wet season is theoretically too small to attain field capacity, resulting in little or no water surplus. Direct evaporation from waste was negligible (assuming daily cover is applied) (Abdoli et al, 2009). The Akaider landfill site was chosen to minimise the leakage of contaminants into groundwater.…”

Section: Proposed Water Balance Equationmentioning

confidence: 99%

Proposed water balance equation for municipal solid waste landfills in Jordan

Aljaradin

Persson

2013

Waste Manag Res

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This article presents a water balance equation for predicting leachate generation in municipal solid waste (MSW) landfills located in semi-arid areas, using the Akaider landfill in Jordan as an example. HYDRUS-2D/3D software was used to model the effect of co-disposal of wastewater into the landfill on the leachate production rates and for comparison with the results of the simulation of the proposed water balance equation parameters. A series of simulations was carried out for a 30-year period. The suggested water balance equation predicted that leachate will percolate to a depth of 50 m in the simulated period. The result indicates that the co-disposed wastewater plays a major role in controlling the rate and magnitude of the contaminants that percolate from the MSW leachate. As the initial water content of the waste increases, there is greater mobilisation of salts. The concentration of chloride at a given location increased and the time required for the chloride to reach this location decreased as a consequence. However, eliminating the co-disposed wastewater will significantly minimise leachate generation and decrease possible groundwater contamination. This equation is applicable to areas that have geological and hydrological properties similar to Jordan.

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Solid Waste Management in Tehran

Pazoki

Ghasemzadeh

2020

Municipal Landfill Leachate Management

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Direct Evaporation from the Waste Body and its Influence on Leachate Generation in Landfills in Arid Areas

Cited by 5 publications

References 2 publications

A water budget model for operating landfills: An application in Greece

A water budget model for operating landfills: An application in Greece

Proposed water balance equation for municipal solid waste landfills in Jordan

Solid Waste Management in Tehran

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