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Title: Measurement of colloidal phenomena during flow through refractive index matched porous media

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4935576· OSTI ID:1474892
 [1];  [2];  [3];  [4];  [1]
  1. Univ. of Colorado, Denver, CO (United States). Dept. of Civil Engineering
  2. Univ. of Colorado, Denver, CO (United States). Dept. of Civil Engineering; Buckley AFB, Aurora, CO (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Earth Sciences Division
  4. Univ. of Colorado, Denver, CO (United States). Dept. of Electrical Engineering

Colloidal phenomena in porous media, natural or engineered, are important in a breadth of science and technology applications, but fundamental understanding is hampered by the difficulty in measuring colloid deposit morphology in situ. To partially address this need, this work describes a static light scattering apparatus using a flow cell filled with refractive index matched (RIM) porous media, allowing real-time measurement of colloidal phenomena as a function of depth within the flow cell. A laser interacts with the colloids in the pore space and their structures, but not with the RIM media. The intensity of scattered light is measured as a function of scattering angle, which allows characterization of colloid deposit morphology as a fractal dimension and a radius of gyration. In parallel, fluid discharge rate and pressure drop are recorded to determine permeability, a key parameter for any application involving flow through porous media. This apparatus should prove useful in any application requiring characterization of colloidal phenomena within porous media. Additionally, this paper describes how to use granular Nafion as RIM porous media.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
Office of Science (SC), Biological and Environmental Research (BER). Earth and Environmental Systems Science Division
Grant/Contract Number:
AC02-05CH11231; SC0006962
OSTI ID:
1474892
Alternate ID(s):
OSTI ID: 1226105
Journal Information:
Review of Scientific Instruments, Vol. 86, Issue 11; Related Information: © 2015 AIP Publishing LLC.; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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