PMID- 17010510 OWN - NLM STAT- MEDLINE DCOM- 20070604 LR - 20070320 IS - 0304-3894 (Print) IS - 0304-3894 (Linking) VI - 142 IP - 1-2 DP - 2007 Apr 2 TI - Diffusion and solubility coefficients determined by permeation and immersion experiments for organic solvents in HDPE geomembrane. PG - 227-35 AB - The chemical resistance of eight organic solvents in high density polyethylene (HDPE) geomembrane has been investigated using the ASTM F739 permeation method and the immersion test at different temperatures. The diffusion of the experimental organic solvents in HDPE geomembrane was non-Fickian kinetic, and the solubility coefficients can be consistent with the solubility parameter theory. The diffusion coefficients and solubility coefficients determined by the ASTM F739 method were significantly correlated to the immersion tests (p<0.001). The steady state permeation rates also showed a good agreement between ASTM F739 and immersion experiments (r(2)=0.973, p<0.001). Using a one-dimensional diffusion equation based on Fick's second law, the diffusion and solubility coefficients obtained by immersion test resulted in over estimates of the ASTM F739 permeation results. The modeling results indicated that the diffusion and solubility coefficients should be obtained using ASTM F739 method which closely simulates the practical application of HDPE as barriers in the field. FAU - Chao, Keh-Ping AU - Chao KP AD - Department of Occupational Safety & Health, China Medical University, 91 Hsueh-Shih Road, Taichung, Taiwan 40402, ROC. kpchao@mail.cmu.edu.tw FAU - Wang, Ping AU - Wang P FAU - Wang, Ya-Ting AU - Wang YT LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060818 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Membranes, Artificial) RN - 0 (Organic Chemicals) RN - 0 (Solvents) RN - 9002-88-4 (Polyethylene) SB - IM MH - Diffusion MH - Kinetics MH - *Membranes, Artificial MH - Organic Chemicals/*chemistry MH - Polyethylene/*chemistry MH - Solubility MH - Solvents/*chemistry MH - Temperature EDAT- 2006/10/03 09:00 MHDA- 2007/06/05 09:00 CRDT- 2006/10/03 09:00 PHST- 2005/11/16 00:00 [received] PHST- 2006/03/30 00:00 [revised] PHST- 2006/08/04 00:00 [accepted] PHST- 2006/10/03 09:00 [pubmed] PHST- 2007/06/05 09:00 [medline] PHST- 2006/10/03 09:00 [entrez] AID - S0304-3894(06)00934-4 [pii] AID - 10.1016/j.jhazmat.2006.08.022 [doi] PST - ppublish SO - J Hazard Mater. 2007 Apr 2;142(1-2):227-35. doi: 10.1016/j.jhazmat.2006.08.022. Epub 2006 Aug 18.