Details
| Original language | English |
|---|---|
| Title of host publication | Environmental Monitoring and Remediation Technologies II |
| Pages | 334-343 |
| Number of pages | 10 |
| Volume | 3853 |
| Publication status | Published - 21 Dec 1999 |
| Event | PHOTONICS EAST '99: 1999 Environmental Monitoring and Remediation Technologies II - Boston, MA, USA Duration: 19 Sept 1999 → 22 Sept 1999 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Publisher | SPIE |
| ISSN (Print) | 0277-786X |
Abstract
Modeling of liquid-liquid-extraction processes involves the concentration of the extracted component directly at the interface. Currently, only very few and specialized methods are available for the direct measurement of these concentrations. Therefore a new, fluorescence based measurement system with a high spatial resolution and a broad application spectrum was developed an tested. The detection principle is based on the use of fluorescent dyes, excited by an argon ion laser. The intensity of the emitted light is dependent on the concentration of the extracted component in the very near surroundings of the dye. This intensity distribution is reproduced by an optical, microscope based system onto a highly sensitive camera with a spatial resolution of 1 micrometer. This distribution is converted into a concentration profile at the interface using a calibration function and digital image processing routines. Measurements were performed in a commonly used stirred two phase reactor modified to meet the requirements of an optical measurement system. It could be shown that the concentration profiles at mobile and immobile interfaces can be visualized with a resolution of 1 micrometer. The profiles formed at the interface differ significantly according to the kinetic of the used extraction system and the flow profiles in the reactor and can be used for further modeling of the extraction processes.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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Environmental Monitoring and Remediation Technologies II. Vol. 3853 1999. p. 334-343 (Proceedings of SPIE - The International Society for Optical Engineering).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Space resolved measurement of transport processes at liquid-liquid interfaces using laser induced fluorescence
AU - Joeris, K.
AU - Scheper, T.
PY - 1999/12/21
Y1 - 1999/12/21
N2 - Modeling of liquid-liquid-extraction processes involves the concentration of the extracted component directly at the interface. Currently, only very few and specialized methods are available for the direct measurement of these concentrations. Therefore a new, fluorescence based measurement system with a high spatial resolution and a broad application spectrum was developed an tested. The detection principle is based on the use of fluorescent dyes, excited by an argon ion laser. The intensity of the emitted light is dependent on the concentration of the extracted component in the very near surroundings of the dye. This intensity distribution is reproduced by an optical, microscope based system onto a highly sensitive camera with a spatial resolution of 1 micrometer. This distribution is converted into a concentration profile at the interface using a calibration function and digital image processing routines. Measurements were performed in a commonly used stirred two phase reactor modified to meet the requirements of an optical measurement system. It could be shown that the concentration profiles at mobile and immobile interfaces can be visualized with a resolution of 1 micrometer. The profiles formed at the interface differ significantly according to the kinetic of the used extraction system and the flow profiles in the reactor and can be used for further modeling of the extraction processes.
AB - Modeling of liquid-liquid-extraction processes involves the concentration of the extracted component directly at the interface. Currently, only very few and specialized methods are available for the direct measurement of these concentrations. Therefore a new, fluorescence based measurement system with a high spatial resolution and a broad application spectrum was developed an tested. The detection principle is based on the use of fluorescent dyes, excited by an argon ion laser. The intensity of the emitted light is dependent on the concentration of the extracted component in the very near surroundings of the dye. This intensity distribution is reproduced by an optical, microscope based system onto a highly sensitive camera with a spatial resolution of 1 micrometer. This distribution is converted into a concentration profile at the interface using a calibration function and digital image processing routines. Measurements were performed in a commonly used stirred two phase reactor modified to meet the requirements of an optical measurement system. It could be shown that the concentration profiles at mobile and immobile interfaces can be visualized with a resolution of 1 micrometer. The profiles formed at the interface differ significantly according to the kinetic of the used extraction system and the flow profiles in the reactor and can be used for further modeling of the extraction processes.
UR - http://www.scopus.com/inward/record.url?scp=0033337902&partnerID=8YFLogxK
U2 - 10.1117/12.372871
DO - 10.1117/12.372871
M3 - Conference contribution
AN - SCOPUS:0033337902
VL - 3853
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 334
EP - 343
BT - Environmental Monitoring and Remediation Technologies II
T2 - PHOTONICS EAST '99
Y2 - 19 September 1999 through 22 September 1999
ER -