I'm not sure it is that simple. I read the abstract and clearly the
energy is coupled acoustically into the oil. I assume the transducer
they used is similar to the ones found in ultrasonic disrupters used for
breaking cell walls (40 Khz) and megasonic cleaning systems which are
used in the semiconductor industry for cleaning photomasks. These
operate in the Mhz frequency range but couple energy acoustically rather
than through RF electromagnetic agitation of molecules as is sugested by
the word 'microwave' Sonic energy causes microcavitation in fluids and
when the tiny bubbles colapse they launch micro shockwaves that can do
surprising things. I had also considered using microwaves in the way you
suggest similar to the way a downstream plasma source works but in this
case it would be oil in the tube rather than a rarefied gas. Oil
molecules have an absorbtion peak somewhere around the 2.5 Ghz frequency
that typical microwave oven magnetrons produce so energy would be easily
coupled through this method. I am not a chemist but basically the idea
is that if you can inject enough energy to kick electrons out of thier
happy orbitals you can then cause chemical bonds to break or under the
right conditions, to form. Photons in the UV spectrum are very
energetic and in the presence of the stoichiometric ratio of alcohol and
base I am wondering if coupling energy into the system in the right way
can push the reaction to completion without the need for extra alcohol
as a catalyst. That would directly reduce the cost of producing
biodiesel and also mean that the glycerine could be alcohol free.
Ahh if only I didn't need to sleep, eat, and go to a job every day I
might have time to play around and find out some answers.....
Joe
bob allen wrote:
the only difference between this procedure and the usual method is the
way you heat the mixture; that is, using microwaves substitutes for
heating by other methods.
[EMAIL PROTECTED] wrote:
I have seen ultrasonic (microwave) at
http://tinyurl.com/8cad7 --in the reactor
and
http://tinyurl.com/bo3by -- in an exit tube from the reactor
both produce glycerine byproduct.
There are a couple of these producers out there who raised there hands
a while back but I cannot find the post again.
Ray
On Wed, 10 Aug 2005 08:53:37 -0400, Joe Street
<[EMAIL PROTECTED]> wrote:
Very interesting. I have also been wondering about ways to add
energy to make the reaction go. One thing I was considering was
ultraviolet light. Anybody on the list have any knowledge or ideas
about this?
Joe
[EMAIL PROTECTED] wrote:
Hi There:
The following US patent offers making biodiesel by adding 15% MeOH
and running the mix at 85degC past very high DC electrode to get
100% conversion - no glycerine, it is converted to 1,2,3-proprionate.
The only other byproduct is hydrogen. Very cool, just a little
scary.
http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PG01&s1=biodeisel&OS=biodeisel&RS=biodeisel
http://tinyurl.com/8hjv7
Ray
On Tue, 09 Aug 2005 19:10:14 -0400, francisco j burgos
<[EMAIL PROTECTED]> wrote:
Dear Mr. Farmer:
seems a good idea. Keep searching, wish you good luck.
F.J. Burgos
----- Original Message ----- From: "Jeremy Farmer"
<[EMAIL PROTECTED]>
To: <Biofuel@sustainablelists.org>
Sent: Tuesday, August 09, 2005 12:45 PM
Subject: [Biofuel] titanium
Just wondering if anyone had any input. I have been thinking
about Biodiesel, and I came across a mosquito trap at the
hardware store that uses propaine run across titanium to crack
the hydrocarbons down to CO2 and attracting mosquitos. I was
wondering if the same theory could be used to make biodiesel?
Does anyone have any ideas?
Thanks,
Jeremy Farmer
JBF Holdings LLC
2601 Lazy Hollow #603
Houston, Texas 77063
832-414-4217
[EMAIL PROTECTED] or [EMAIL PROTECTED]
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