Measurement of colloidal phenomena during flow through refractive index matched porous media
- Univ. of Colorado, Denver, CO (United States). Dept. of Civil Engineering
- Univ. of Colorado, Denver, CO (United States). Dept. of Civil Engineering; Buckley AFB, Aurora, CO (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Earth Sciences Division
- 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
Web of Science
Similar Records
Colloidal agglomerates in tank sludge: Impact on waste processing
Small-angle X-ray scattering study of the formation of colloidal silica particles from alkoxides: Primary particles or not?