Abstract
The migration of the dilute aqueous organic contaminants through HDPE geomembranes is examined. Semi-empirical methods to estimate partition and diffusion coefficients for organic contaminants in dilute aqueous solutions with respect to high-density polyethylene (HDPE) geomembranes are proposed. These methods were evaluated by performing sorption and diffusion tests on a 2.0 mm thick HDPE geomembrane using three chlorinated hydrocarbons (dichloromethane, 1,2-dichloroethane and trichloroethylene) and four aromatic hydrocarbons (benzene, toluene, ethylbenzene and xylenes). The results show that the partition coefficient ( S gf) can be fairly well estimated using the method based n-octanol/water coefficient of the contaminant and even better by that based on the chemical molecular weight. This suggests that these methods may be used as starting point to estimate the migration of organic contaminants through HDPE geomembranes.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
