NDLI: Automated separation of immiscible liquids using an optically monitored porous capillary

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Automated separation of immiscible liquids using an optically monitored porous capillary

Content Provider	Semantic Scholar
Author	Bannock, James H. Turner, Simon David Mello, John C. De
Copyright Year	2018
Abstract	We report an automated procedure for the inline separation of two immiscible liquids based on a porous polytetrafluoroethylene (PTFE) capillary and a small number of inexpensive electronic components. By monitoring the light transmitted through fluid streams at the two outlets of the separator and iteratively adjusting a needle-valve located at one outlet until smooth time-invariant signals are observed at both outlets, the separator is capable of establishing complete liquid/liquid separation within minutes. Using mixtures of water and toluene as a test system, near quantitative recovery of the two liquids was achieved over a wide range of flow conditions without detectable cross contamination at either outlet. In a twenty-four hour test run, departures from complete separation occurred just three times, and on each occasion complete separation was automatically restored within ninety seconds. Further tests on other liquid/liquid mixtures showed that the automated separator is capable of rapidly and reliably inducing the separation of aqueous–organic, aqueous–fluorous and organic–fluorous mixtures, making it a versatile tool for numerous applications in fluidic analysis, synthesis and purification.
Starting Page	467
Ending Page	477
Page Count	11
File Format	PDF HTM / HTML
DOI	10.1039/C8RE00023A
Volume Number	3
Alternate Webpage(s)	https://pubs.rsc.org/en/Content/ArticlePDF/2018/RE/C8RE00023A
Alternate Webpage(s)	http://www.rsc.org/suppdata/c8/re/c8re00023a/c8re00023a1.pdf
Alternate Webpage(s)	https://doi.org/10.1039/C8RE00023A
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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