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Sorption/desorption, diffusion, and swelling characteristics of geomembranes in the presence of halo‐organic liquids
Author(s) -
Aminabhavi T. M.,
Naik H. G.
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19990418)72:3<349::aid-app5>3.0.co;2-n
Subject(s) - geomembrane , sorption , desorption , diffusion , polyethylene , high density polyethylene , low density polyethylene , materials science , polypropylene , swelling , gravimetric analysis , thermodynamics , arrhenius equation , chemical engineering , polymer chemistry , analytical chemistry (journal) , chemistry , composite material , chromatography , adsorption , organic chemistry , activation energy , physics , engineering
Sorption/desorption results of halogen‐containing liquids into high‐density polyethylene, linear low‐density polyethylene, very low‐density polyethylene, and polypropylene geomembranes are presented at 25, 50, and 70°C. Sorption results are obtained by a gravimetric method, and diffusion coefficients have been calculated by using Fick's equation from the initial linear portions of the sorption/desorption curves. Swelling of the geomembranes was studied from a measurement of the increase in volume, thickness, and diameter. From a temperature dependence of sorption and diffusion coefficients, the Arrhenius parameters have been calculated. Liquid concentration profiles have been computed using Fick's equation for the appropriate initial and boundary conditions. The results of this study may have relevance in selecting the suitable geomembrane for a specific application in hazardous waste chemical ponds and other similar situations.