A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Volatile Organic Compound (VOC) Transport through a Composite Liner with Co-Extruded Geomembrane Containing Ethylene Vinyl-Alcohol (EVOH)
A co-extruded geomembrane (GM) with a layer of ethylene vinyl-alcohol (EVOH) is being introduced in environmental containment applications to take advantage of the hydrophobic properties of polyethylene as a barrier to contaminant flux; specifically, the potential to substantially reduce the diffusion of nonpolar volatile organic compounds (VOCs). This research evaluates and compares the relative transport of common VOCs through composite landfill liners constructed with a co-extruded GM that contains EVOH. Based on experimental results from diffusion tests with composite liners, high-density polyethylene (HDPE) GM produces more rapid breakthrough and higher VOC migration. A co-extruded EVOH GM had measured diffusion coefficients that were more than 20 times smaller compared with HDPE GM. The diffusion coefficients of 1.5-mm co-extruded EVOH GM were 0.53 × 10-13 m2/s for methylene chloride, 0.17 × 10-13 m2/s for trichloroetheylene, and 0.14 × 10-13 m2/s for toluene. Based on diffusion testing, co-extruded EVOH GM acts as an effective barrier to VOC migration in composite liners.
Volatile Organic Compound (VOC) Transport through a Composite Liner with Co-Extruded Geomembrane Containing Ethylene Vinyl-Alcohol (EVOH)
A co-extruded geomembrane (GM) with a layer of ethylene vinyl-alcohol (EVOH) is being introduced in environmental containment applications to take advantage of the hydrophobic properties of polyethylene as a barrier to contaminant flux; specifically, the potential to substantially reduce the diffusion of nonpolar volatile organic compounds (VOCs). This research evaluates and compares the relative transport of common VOCs through composite landfill liners constructed with a co-extruded GM that contains EVOH. Based on experimental results from diffusion tests with composite liners, high-density polyethylene (HDPE) GM produces more rapid breakthrough and higher VOC migration. A co-extruded EVOH GM had measured diffusion coefficients that were more than 20 times smaller compared with HDPE GM. The diffusion coefficients of 1.5-mm co-extruded EVOH GM were 0.53 × 10-13 m2/s for methylene chloride, 0.17 × 10-13 m2/s for trichloroetheylene, and 0.14 × 10-13 m2/s for toluene. Based on diffusion testing, co-extruded EVOH GM acts as an effective barrier to VOC migration in composite liners.
Volatile Organic Compound (VOC) Transport through a Composite Liner with Co-Extruded Geomembrane Containing Ethylene Vinyl-Alcohol (EVOH)
Eun, Jongwan (author) / Tinjum, James M. (author) / Benson, Craig H. (author) / Edil, Tuncer B. (author)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 1960-1969
2014-02-24
Conference paper
Electronic Resource
English
| British Library Conference Proceedings | 2014
| British Library Online Contents | 2018
Temperature Effect on the Transport of VOCs in a Co-Extruded EVOH Geomembrane
| British Library Conference Proceedings | 2017