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Related Experiment Video

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Protocol for Biofilm Streamer Formation in a Microfluidic Device with Micro-pillars

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Published on: August 20, 2014

Micro-Raman Technology to Interrogate Two-Phase Extraction on a Microfluidic Device.

Gilbert L Nelson¹, Susan E Asmussen², Amanda M Lines²

¹The College of Idaho , Department of Chemistry , Caldwell , Idaho 83605 , United States.

Analytical Chemistry

|May 8, 2018

Summary

This summary is machine-generated.

This study introduces a microfluidic method using Raman spectroscopy to monitor solvent extraction kinetics. The technique accurately measures concentrations in biphasic systems, crucial for nuclear fuel cycle separations.

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Area of Science:

Analytical Chemistry
Chemical Engineering
Nuclear Chemistry

Background:

Solvent extraction is vital for separations, especially in the nuclear fuel cycle.
Understanding extraction kinetics is key to process efficiency.
Microfluidic devices offer controlled environments for studying biphasic systems.

Purpose of the Study:

To develop and validate a microfluidic methodology for monitoring biphasic solvent extraction.
To combine chemometrics with micro-Raman spectroscopy for real-time analysis.
To determine interfacial mass transfer kinetics in simulated nuclear fuel reprocessing systems.

Main Methods:

Utilized microfluidic devices to generate plug flow for biphasic extraction.
Employed online micro-Raman spectroscopy for in-situ concentration measurements.
Applied chemometric analysis to interpret spectral data from organic and aqueous phases.

Main Results:

Successfully monitored concentration changes in real-time during biphasic extraction.
Validated the methodology using pre-equilibrated solutions.
Established interfacial mass transfer kinetics for a simulated PUREX process system.

Conclusions:

The developed microfluidic-Raman spectroscopy technique is effective for studying solvent extraction kinetics.
This method enables precise analysis of small sample volumes, suitable for harsh environments.
Results demonstrate the technique's efficacy compared to macro-scale methods.