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					Experiment 8

                                                     SFE

INTRODUCTION:
   Supercritical fluid extraction (SFE) has a few main purposes for its use including elimination of organic
solvents, thus reducing the problems of their storage and disposal. One of the most interesting
properties of the SFE is the high diffusion coefficients of lipids in supercritical fluids, far greater than in
conventional liquid solvents. CO2 is the most adopted supercritical fluid that has the lowest cost and is
nonflammable.

PROCEDURE:
   1. Before starting the experiment, we have to clean the instrument before our procedure begins.
      We clean the column by packing only glass wool.
   2. Set all parameters and flow meter during cleaning.
   3. For experimental purposes, turn off flowmeter and pack the column with glass wool, then our
      sample, then more glass wool.
   4. Set the pressure at 300bar and cover flask with parafilm to collect wax and run for 30 minutes.

DATA:
Day 1: Today we started our experiment and learned the procedure of the SFE.
        Sample #1:
        Flask = 80.5588g
        1.0002g wax
        1.003g paper
        After running = 81.4575g

The instrument was not running properly and since no professors or lab assistants were around we
decided to shut down and not mess with the instrument.

Day 2: Today we tried completing our lab, unfortunately the SFE broke and we were unable to complete
our lab.

CONCLUSION:
   With the SFE, unfortunately, we were unable to receive any data since the instrument broke while
the instructors and lab assistants were in Anaheim, California. We tried having other seniors who were
around to help out, and unfortunately did not. It is a shame that we were not able to experience the SFE
to the best of its abilities because maybe it could have changed our whole idea on our real world
project. I would like to eventually work with the SFE to see what it can really do.

				
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posted:11/1/2011
language:English
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