Analysis of Pore -Scale Nonaqueous Phase Liquid Dissolution in Etched Silicon Pore Network

NAPL volumes and surface areas were used as input parameters to calculate mass transfer coefficients for dissolution in all micromodel experiments. Mass transfer coefficients for the homogeneous and heterogeneous micromodels initially increased with water velocity but then leveled off to a relatively constant value. Also, these mass transfer coefficients varied with pore and NAPL blob geometry. Specifically, the mass transfer coefficient decreased with increasing blob size because larger blobs had more NAPL-water interfacial area not adjacent to flowing water, and with decreasing pore throat width to pore throat depth because NAPL interfaces in deeper more narrow pores were adjacent to more stagnant water. For each of these cases the mass transfer coefficient decreased because the average diffusion length adjacent to NAPL blobs increased.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Civil and Environmental Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Chomsurin, Cheema

Contributors dc:contributor

• Werth, Charles J.

• Hydrology

Language dc:language

eng

Identifier

(MiAaPQ)AAI3086034

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/83203