Authors: Lee, Kenneth Y.; Ha, Duong T.

Source: Canadian Journal of Civil Engineering, Volume 36, Number 4, April 2009 , pp. 738-742(5)

Publisher: NRC Research Press

Abstract:

Laboratory experiments are conducted to determine the liquid-liquid phase separation behavior of six three-component systems with each system comprised of a common alcohol (namely ethanol, isopropanol, or methanol), water, and one of two engineered dense nonaqueous phase liquids (DNAPLs) manufactured by the 3M™ Corporation (namely methoxy-nonafluorobutane (HFE-7100) or ethoxy-nonafluorobutane (HFE-7200)). The experimental results are presented on ternary phase diagrams and compared against available published experimental data where tetrachloroethylene (PCE) and (or) trichloroethylene (TCE) is the dense nonaqueous phase liquid (DNAPL). Results show that the two engineered fluids exhibit similar phase separation behavior in the presence of the same alcohol. Furthermore, these engineered fluids exhibit similar phase separation behavior to that of PCE, but relatively dissimilar phase separation behavior to that of TCE.

Des expériences de laboratoire ont été réalisées pour déterminer le comportement de séparation en phase liquide-liquide de six systèmes à trois composantes; chaque système comportait un alcool commun (éthanol, alcool isopropylique ou méthanol), de l'eau et un des deux liquides non aqueux denses artificiels fabriqués par 3M^MC (méthoxy-nonafluorobutane (HFE-7100) ou éthoxy-nonafluorobutane (HFE-7200)). Les résultats expérimentaux sont présentés sur des diagrammes de phases ternaires et comparés aux données expérimentales publiées dans lesquelles le liquide non aqueux dense artificiel était le tétrachloréthylène (PCE) et(ou) le trichloréthylène (TCE). Les résultats montrent que les deux liquides artificiels montraient une séparation de phase similaire en présence d'un alcool donné. De plus, ces liquides artificiels présentaient une séparation de phase similaire à celle du PCE, mais relativement différente de celle du TCE.

Document Type: Research article

Publication date: 2009-04-01

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• Published since 1974, this monthly publication is the official journal of the Canadian Society for Civil Engineering. It contains articles on environmental engineering, hydrotechnical engineering, structure engineering, construction engineering, engineering mechanics, and engineering materials, and a history of civil engineering. Contributors include recognized researchers and practitioners in industry, government, and academe. New developments in engineering design and construction are also featured.
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