iandol on mon 12 may 03
Yes, I thought about this and mad an approach to a local fried food =
outlet.
"Sorry" as the reply. "I sell it to a local Pig Farmer who uses it as a =
food additive for his stock"
Even Sump Oil is becoming recyclable and is no longer available. As =
EPA's tighten their grip such short cuts to potting profits are being =
removed from our grasp.
Best regards,
Ivor Lewis.
John Britt on mon 12 may 03
Hello,
Fortunately, Ivor is incorrect, veggie oil is very easy to get. True, the
big companies do contract with people to collect it and it is then sold to
companies for use in cosmetics, farmers, heating, etc..
But there are thousands of small restuarants that just dispose of it.
Here is a link to the article
http://www.ceramicsmonthly.org/mustreads/vegoil.asp
published in Ceramics Monthly.
It would be a good idea to do some reasearch on bio-diesel. THere is a lot
of literature on it! I am sure in the back of some of those books are a
list of suppliers.
I am working on finding a source for a burner unit. You can buy them from
fuel oil repair people who discard them when folks change from oil to gas.
We used a drip system but I thought that an oil burner would be more
efficient.
I will let you know when I fing out the address.
John Britt
Penland Clay
iandol on tue 13 may 03
Dear John Britt,
Perhaps your US Fed and State Environmental Protection Agencies are a =
little more relaxed about the disposal of waste oils or it may be that =
those ready made food outlets have not realised that their waste has =
commercial value and can add to the bottom line in the fight for a fist =
full of dollars.
Oil Wise down Under at the moment the big drive is to plant Olives. they =
are going in by the hundreds of acres. NO doubt the inferior grades will =
be used a Bio Diesel in a few years time. The other Sub will be Rape =
Seed Oil, better known as Canola.
I have no hassles with any potter exploiting a waste oil. But Dead Sump =
Oil has some serious draw backs.
Best regards,
Ivor.
Louis Katz on wed 14 may 03
I have done only a bit of firing with waste oil. In Thailand I tried to
get them to use it when firewood became illegal for a short period to
burn. People hassled me about pollution. I told them it was better than
the tires they burned. Waste oil (sump) works best in a hot kiln. Heat
it up with something that costs money and burn the sump oil clean. . I
don't want to stick my neck too far out on the heavy metal issue, but I
suspect that replaceing refined heating oil with sump oil above 1500
degrees F including considering disposal of sludge and transportation
of the oil is a net plus for the environment. I don't know about heavy
metal content in fired glazes and would be tempted to test a bunch of
pots.
Waste Soybean oil from the Kansas City Art Institute after being run
through a 60 mesh seive smelled like donuts. Seemed to fire O.K.. Only
used it for one firing.
Also at Kansas City Michael Luby fired a kiln with forced Coal dust.
The firing chamber became choked with clinker (ash).
Louis
lkatz@falcon.tamucc.edu, http://www.tamucc.edu/~lkatz/
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