Sorption/desorption, diffusion, permeation and swelling of high density polyethylene geomembrane in the presence of hazardous organic liquids

Autor: Tejraj M. Aminabhavi, H. G. Naik
Rok vydání: 1999
Předmět:
Zdroj: Journal of Hazardous Materials. 64:251-262
ISSN: 0304-3894
DOI: 10.1016/s0304-3894(98)00183-6
Popis: The laboratory findings on sorption and desorption of 14 organic liquids into high density polyethylene (HDPE) geomembranes are presented at 25, 50 and 70°C. The values of diffusion and permeation coefficients have been calculated using these data. Swelling of the HDPE geomembrane was studied by monitoring its increase in thickness and diameter and thereby calculating the increase in volume. From a temperature dependence of sorption, diffusion and permeation coefficients, the Arrhenius parameters have been calculated. From the sorption data, the concentration profiles of liquids inside the HDPE by solving Fick's diffusion equation under the appropriate initial and boundary conditions. Results of this research may have relevance in the application of HDPE geomembrane in the hazardous waste environment containing the solvents used in this research.
Databáze: OpenAIRE