Analytical model for vapour-phase VOCs transport in four-layered landfill composite cover systems

Haijian Xie; Qiao Wang; Abdelmalek Bouazza; Shijin Feng

doi:10.1016/j.compgeo.2018.04.021

Analytical model for vapour-phase VOCs transport in four-layered landfill composite cover systems

Haijian Xie, Qiao Wang, Abdelmalek Bouazza, Shijin Feng

Civil & Environmental Engineering

Research output: Contribution to journal › Article › Research › peer-review

49 Citations (Scopus)

Abstract

An analytical model for vapour-phase volatile organic compound (VOC) diffusion through four-layered landfill cover system consisting of a soil protective layer, a drainage layer, a geomembrane, and a compacted clay liner (CCL) or geosynthetic clay liner (GCL) is presented. VOCs transport in the cover system is sensitive to the changes of S_r in the protective layer and CCL rather than that of the drainage layer. When S_r ₁ = S_r ₂ = S_r ₄ = 0.5, in order to meet the EPA standard on benzene concentration, the thickness of CCL should be greater than 200 cm or it should be modified with 2% biochar.

Original language	English
Pages (from-to)	80-94
Number of pages	15
Journal	Computers and Geotechnics
Volume	101
DOIs	https://doi.org/10.1016/j.compgeo.2018.04.021
Publication status	Published - 1 Sept 2018

Keywords

Analytical solution
Composite cover system
Degradation
Diffusion
Landfill
Vapour-phase volatile organic compounds

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10.1016/j.compgeo.2018.04.021

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title = "Analytical model for vapour-phase VOCs transport in four-layered landfill composite cover systems",

abstract = "An analytical model for vapour-phase volatile organic compound (VOC) diffusion through four-layered landfill cover system consisting of a soil protective layer, a drainage layer, a geomembrane, and a compacted clay liner (CCL) or geosynthetic clay liner (GCL) is presented. VOCs transport in the cover system is sensitive to the changes of Sr in the protective layer and CCL rather than that of the drainage layer. When Sr 1 = Sr 2 = Sr 4 = 0.5, in order to meet the EPA standard on benzene concentration, the thickness of CCL should be greater than 200 cm or it should be modified with 2\% biochar.",

keywords = "Analytical solution, Composite cover system, Degradation, Diffusion, Landfill, Vapour-phase volatile organic compounds",

author = "Haijian Xie and Qiao Wang and Abdelmalek Bouazza and Shijin Feng",

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AU - Xie, Haijian

AU - Wang, Qiao

AU - Bouazza, Abdelmalek

AU - Feng, Shijin

PY - 2018/9/1

Y1 - 2018/9/1

N2 - An analytical model for vapour-phase volatile organic compound (VOC) diffusion through four-layered landfill cover system consisting of a soil protective layer, a drainage layer, a geomembrane, and a compacted clay liner (CCL) or geosynthetic clay liner (GCL) is presented. VOCs transport in the cover system is sensitive to the changes of Sr in the protective layer and CCL rather than that of the drainage layer. When Sr 1 = Sr 2 = Sr 4 = 0.5, in order to meet the EPA standard on benzene concentration, the thickness of CCL should be greater than 200 cm or it should be modified with 2% biochar.

AB - An analytical model for vapour-phase volatile organic compound (VOC) diffusion through four-layered landfill cover system consisting of a soil protective layer, a drainage layer, a geomembrane, and a compacted clay liner (CCL) or geosynthetic clay liner (GCL) is presented. VOCs transport in the cover system is sensitive to the changes of Sr in the protective layer and CCL rather than that of the drainage layer. When Sr 1 = Sr 2 = Sr 4 = 0.5, in order to meet the EPA standard on benzene concentration, the thickness of CCL should be greater than 200 cm or it should be modified with 2% biochar.

KW - Analytical solution

KW - Composite cover system

KW - Degradation

KW - Diffusion

KW - Landfill

KW - Vapour-phase volatile organic compounds

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DO - 10.1016/j.compgeo.2018.04.021

M3 - Article

AN - SCOPUS:85046619615

SN - 0266-352X

VL - 101

SP - 80

EP - 94

JO - Computers and Geotechnics

JF - Computers and Geotechnics

ER -

Analytical model for vapour-phase VOCs transport in four-layered landfill composite cover systems

Abstract

Keywords

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