[Vwdiesel] Reactor converts vegetable oil into biodiesel
jimdana1240 at msn.com
Fri Apr 21 07:18:25 EDT 2006
Actually the Lye ends up back in the glycerol, methanol, etc. leftovers as
NaOH again. And can be reused along with the Methanol. Some folks do recover
and reuse it.
>From: James Hansen <jhsg at sasktel.net>
>CC: vwdiesel at vwfans.com
>Subject: Re: [Vwdiesel] Reactor converts vegetable oil into biodiesel
>Date: Thu, 20 Apr 2006 22:31:14 -0600
>just one thing about the process...
>a catalyst as the article describes the hydroxide provider (lye),
>shouldn't be used up, but the lye is, so it's not a catalyst proper...
>or am I on the wrong line of thought here?
>The concept sounds pretty good tho.
>Andrew Buc wrote:
> > This from today's Seattle Times:
> > http://seattletimes.nwsource.com/html/localnews/
> > 2002941349_biodiesel20m.html
> > Reactor converts vegetable oil into biodiesel
> > By William McCall
> > The Associated Press
> > PORTLAND A tiny chemical reactor that can convert vegetable oil
> > directly into biodiesel could help farmers turn some of their crops
> > into homegrown fuel to operate agricultural equipment instead of
> > relying on costly imported oil.
> > "This is all about producing energy in such a way that it liberates
> > people," said Goran Jovanovic, a chemical-engineering professor at
> > Oregon State University who developed the microreactor.
> > The device about the size of a credit card pumps vegetable oil and
> > alcohol through tiny parallel channels, each smaller than a human hair,
> > to convert the oil into biodiesel almost instantly.
> > By comparison, it takes more than a day to produce biodiesel with
> > current technology.
> > Conventional production involves dissolving a catalyst, such as sodium
> > hydroxide, in alcohol, then stirring it into vegetable oil in large
> > vats for about two hours.
> > The mixture then has to sit for 12 to 24 hours, while a slow chemical
> > reaction forms biodiesel along with glycerin, a byproduct.
> > The glycerin is separated and can be used to make other products, such
> > as soaps.
> > But it still contains the chemical catalyst, which must be neutralized
> > and removed using hydrochloric acid a long and costly process.
> > The microreactor under development by the university and the Oregon
> > Nanoscience and Microtechnologies Institute eliminates the mixing, the
> > standing time and maybe even the need for a catalyst.
> > "If we're successful with this, nobody will ever make biodiesel any
> > other way," Jovanovic said.
> > The device is small, but it can be stacked in banks to increase
> > production levels to the volume required for commercial use, he said.
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