Posted by Curbie on May 26, 2009, 12:57 pm
You got that right!
I didn't mean to imply anything about the professor or the process,
except from the article I don't see much benefit for the DIY bunch.
The oil companies are really profiting from the way things are
currently and I can't imagine them doing anything helpful until they
can profit from it.
I can't see how restaurant waste is going to solve fuel problems,
those numbers just don't make sense, which to me leads the home
bio-fuels bunch back to growing their own feed-crops.
The article says:
"The solvent used is on a three to one ratio, reducing it by 10 fold,
it requires 30 times less catalyst and the process takes a maximum of
15 minutes. One litre of oil makes one litre of biofuel - like for
like - with less glycerin, which we then use to make an additive to
skim off the biofuel and start the recycling process."
This confuses me (no detail):
"The solvent used is on a three to one ratio"
Generally transesterification requires methanol of 20% by volume of
oil, a little higher % if you're using ethanol.
Exactly what is getting reduced by 10 fold, I can't tell.
"with less glycerin"
Generally home-made biodiesel produces 10 to 20% (by volume) of
glycerin depending on the oil used with a higher % if the oil is used.
Assuming that new process produces 10% less glycerin and 10% more
usable oil it may offset the cast of microwaving, then there would
probably some value there for oil companies, but I still don't the
benefit for home-makers, and it seems to me that the oil companies are
doing just fine.
Posted by News on May 26, 2009, 3:23 pm
I assume the cooking oil is to grab attention. It is how it is being
processed, microwaves, and with little waste, and the ability to do it on
large scale using known bio-fuels that makes this stand out.
Posted by Eeyore on May 27, 2009, 12:33 am
How do microwaves make it 'better'. And where's the evidence there's less
'waste'. This seems like a known process being operated using a different
heat source ONLY.
Posted by News on May 27, 2009, 9:14 am
I do not know, but the process is causing many around the world to take
I do not know, but they claim there is less waste causing many around the
world to take note.
Posted by Eeyore on May 28, 2009, 12:16 am
You mean the 'meeja' have found something to occupy bare paper ? Until next
That would be nice if it was verifiable. In any event there's not enough waste
veg oil used in food processing to do more than make a minor dent in oil