The influence of interfacial properties on two-phase liquid flow of organic contaminants in groundwater

Technical Report · Sun Sep 01 04:00:00 EDT 1991

DOI:https://doi.org/10.2172/6058727· OSTI ID:6058727

Hayes, K F; Demond, A H

The purpose of this project is to investigate how changes in interfacial chemical properties affect two-phase transport relationships. Specifically, the objective is to develop a quantitative means that will enable the prediction of changes in the capillary pressure-saturation relationship, a fundamental constitutive relationship in multiphase flow, from changes in interfacial properties, such as adsorption and electrophoretic mobility, through a knowledge of their effect on wettability. The information presented here summarizes the progress we have made in the past eight months of the second project period. Working with a system composed of air-water-silica-cetyltrimethylammonium bromide (CTAB), we have obtained a relationship between degree of adsorption and the surface charge of silica (as measured by electrophoretic mobility), and the drainage and imbibition capillary pressure relationships of system. The bulk of this report describes the completed set of measurements for the air-water-silica-CTAB system at pH 6. We are currently working on a comparable set of measurements for the xylene-water-silica-CTAB system at pH 6. Described here are the interfacial tension, contact angle and preliminary drainage capillary pressure measurements. Our work to date shows a dependence of surface properties on pH. Consequently, in the coming year, we will also complete a set of measurements at another pH value to show the effect of pH on capillary pressure relationships.

• Research Organization: Michigan Univ., Ann Arbor, MI (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-89ER60820
• OSTI ID: 6058727
• Report Number(s): DOE/ER/60820-2; ON: DE92004685
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
AIR
ALKYLATED AROMATICS
AROMATICS
CHALCOGENIDES
CHEMICAL PROPERTIES
CONTAMINATION
DOCUMENT TYPES
FLOW MODELS
FLUID FLOW
FLUIDS
GASES
GROUND WATER
HYDROCARBONS
HYDROGEN COMPOUNDS
INTERFACES
MATHEMATICAL MODELS
MINERALS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PROGRESS REPORT
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SURFACE PROPERTIES
SURFACE TENSION
TWO-PHASE FLOW
WATER
WETTABILITY
XYLENES