Abstract
Multicomponent nonaqueous phase liquid (NAPL) contaminants that contain compounds that are solids in their pure states can undergo phase transformations. This paper examines the relationship between NAPL composition and liquid phase stability for mixtures of polycyclic aromatic hydrocarbons (PAHs), most of which are solids in pure form at ambient temperatures. Because any natural or engineered process that acts to selectively extract compounds will alter NAPL composition, knowledge of phase stability is an important determinant in risk assessment, remediation effectiveness, and research. Ideal solubility theory dictates that a NAPL will be a homogeneous liquid if each constituent's mole fraction is less than the solid−liquid reference fugacity ratio at the system temperature. Through experimental observation of binary and ternary systems, it is shown that ideal solubility theory is a reliable guide for predicting PAH−NAPL phase stability. Uncertainty in melting temperature and entropy of fusion is a signi...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.