Sorption/desorption studies on polypropylene geomembrane in the presence of hazardous organic liquids

Experimental results of sorption/desorption obtained from a gravimetric met hod are presented for a polypropylene geomembrane with various organic liqu ids at 25, 50, and 70 degrees C. The sorption data have been fitted to an A rrhenius relationship to obtain the heat of sorption. The sorption/desorpti on data have been analyzed using an empirical equation. The swelling of the PP geomembrane has also been studied for the chosen liquids. Experimental results and the derived quantities have been discussed to study the chemica l resistivity of the geomembrane. (C) 1999 John Wiley & Sons, Inc.