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Numerical evaluation of different landfill daily cover in semiarid areas – Jordan

Aljaradin, Mohammad LU and Persson, Kenneth M LU (2015) In International Journal of Environment and Waste Management 16(2). p.95-112
Abstract
Efficient and suitable daily landfill cover is considered the most important aspect for minimising the negative impact of landfills on the local environment and population, especially in arid and semiarid countries. In this study, numerical model, HYDRUS-2D/3D, was used to investigate the impact of landfill cover type, cover thickness and antecedent water content on the quantity and the rate of contaminant percolation through the Mafraq landfill in Jordan during a 30-year simulation period. Four different cover types (sandy loam, clay loam, silt and clay), three cover thicknesses (0, 50, 100 cm) and two antecedent soil water content values (θi = 0.12 and 0.20 m3m−3) were simulated. Initial chloride concentration of 665 mg/l which is equal... (More)
Efficient and suitable daily landfill cover is considered the most important aspect for minimising the negative impact of landfills on the local environment and population, especially in arid and semiarid countries. In this study, numerical model, HYDRUS-2D/3D, was used to investigate the impact of landfill cover type, cover thickness and antecedent water content on the quantity and the rate of contaminant percolation through the Mafraq landfill in Jordan during a 30-year simulation period. Four different cover types (sandy loam, clay loam, silt and clay), three cover thicknesses (0, 50, 100 cm) and two antecedent soil water content values (θi = 0.12 and 0.20 m3m−3) were simulated. Initial chloride concentration of 665 mg/l which is equal to the measured concentration in Mafraq landfill leachate was used during simulation. Simulation results showed that maximum chloride concentration for different scenarios at all locations within the soil profile during the entire simulation period was less than the chloride concentration in the municipal solid waste (MSW) leachate. In addition, as the landfill cover thickness increases, the concentration of chloride at a certain location decreases. Meanwhile, the time required to reach this location increases. The simulation results also showed that the effect of θi on chloride concentration reduction increases as the cover thickness increases. A cover thickness of 50 cm is suitable in case of low θi. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to specialist publication or newspaper
publication status
published
subject
keywords
leachate migration, HYDRUS-2D&, #47, 3D, semiarid climate, landfill daily cover, Jordan, numerical simulation, modelling, landfill cover type, cover thickness, antecedent water content, chloride concentration, environmental pollution, municipal solid waste, MSW
categories
Higher Education
in
International Journal of Environment and Waste Management
volume
16
issue
2
pages
95 - 112
publisher
Inderscience Enterprises Ltd.
external identifiers
  • Scopus:84940495449
ISSN
1478-9868
DOI
10.1504/IJEWM.2015.071286
language
English
LU publication?
yes
id
a4420b50-7676-4837-9298-22b47372b782 (old id 8569273)
date added to LUP
2016-02-08 15:04:35
date last changed
2017-02-18 00:26:42
@misc{a4420b50-7676-4837-9298-22b47372b782,
  abstract     = {Efficient and suitable daily landfill cover is considered the most important aspect for minimising the negative impact of landfills on the local environment and population, especially in arid and semiarid countries. In this study, numerical model, HYDRUS-2D/3D, was used to investigate the impact of landfill cover type, cover thickness and antecedent water content on the quantity and the rate of contaminant percolation through the Mafraq landfill in Jordan during a 30-year simulation period. Four different cover types (sandy loam, clay loam, silt and clay), three cover thicknesses (0, 50, 100 cm) and two antecedent soil water content values (θi = 0.12 and 0.20 m3m−3) were simulated. Initial chloride concentration of 665 mg/l which is equal to the measured concentration in Mafraq landfill leachate was used during simulation. Simulation results showed that maximum chloride concentration for different scenarios at all locations within the soil profile during the entire simulation period was less than the chloride concentration in the municipal solid waste (MSW) leachate. In addition, as the landfill cover thickness increases, the concentration of chloride at a certain location decreases. Meanwhile, the time required to reach this location increases. The simulation results also showed that the effect of θi on chloride concentration reduction increases as the cover thickness increases. A cover thickness of 50 cm is suitable in case of low θi.},
  author       = {Aljaradin, Mohammad and Persson, Kenneth M},
  issn         = {1478-9868},
  keyword      = {leachate migration,HYDRUS-2D&,#47,3D,semiarid climate,landfill daily cover,Jordan,numerical simulation,modelling,landfill cover type,cover thickness,antecedent water content,chloride concentration,environmental pollution,municipal solid waste,MSW},
  language     = {eng},
  number       = {2},
  pages        = {95--112},
  publisher    = {Inderscience Enterprises Ltd.},
  series       = {International Journal of Environment and Waste Management},
  title        = {Numerical evaluation of different landfill daily cover in semiarid areas – Jordan},
  url          = {http://dx.doi.org/10.1504/IJEWM.2015.071286},
  volume       = {16},
  year         = {2015},
}