We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Evaluation of an HDPE geomembrane after 14 years as a leachate lagoon liner.
- Authors
Rowe, R. Kerry; Sangam, Henri P.; Lake, Craig B.
- Abstract
A geomembrane -- compacted clay composite liner system used to contain municipal solid waste (MSW) landfill leachate for 14 years is evaluated. Field observations of the geomembrane revealed many defects, including holes, patches, and cracks. Physical, chemical, and mechanical tests conducted on samples collected from five different locations of the liner suggest that samples continuously exposed to sunlight and high temperatures experienced more degradation compared to samples that were covered by leachate or soil. Sorption and diffusion tests revealed that the permeation coefficients of volatile organic compounds were in the range of 4 x 10[sup -12] to 6 x 10[sup -11] m[sub 2]/s and that, with respect to these parameters, there was no significant difference between samples with different exposure levels. However, the permeation coefficients were between for and five times lower than values obtained for unaged HDPE geomembranes typical o[ present day production. Contaminant modelling of the entire lagoon liner suggests that the geomembrane liner most likely stopped being effective as a contaminant barrier to ionic species sometime between 0 and 4 years alter the installation.
- Subjects
GEOMEMBRANES; PACKED towers (Chemical engineering); CHEMICAL engineering equipment; SEPARATION (Technology); DIFFUSION
- Publication
Canadian Geotechnical Journal, 2003, Vol 40, Issue 3, p536
- ISSN
0008-3674
- Publication type
Article
- DOI
10.1139/t03-019