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Remobilization of Residual Non-Aqueous Phase Liquid in Porous Media by Freeze - Thaw Cycles

Singh, Kamaljit; Niven, Robert; Senden, Timothy; Turner, Michael; Sheppard, Adrian; Middleton, Jill; Knackstedt, Mark

Description

The pore-scale behavior of a nonaqueous phase liquid (NAPL) trapped as residual contamination in a porous medium, subject to freeze-thaw cycles, was investigated by X-ray microcomputed tomography. It is shown that freeze-thaw cycles cause significant NAPL remobilization in the direction of the freezing front, due to the rupture and transport of a significant proportion of (supposedly entrapped) larger multipore NAPL ganglia. Significant NAPL remains in place, however, due to substantial...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/59419
Source: Environmental Science and Technology
DOI: 10.1021/es200151g

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