You can make Presto style logs by
mixing small amounts of Glycerol with coarse sawdust & then press it into an
paper old milk carton & after it sets up & dries they burn these in a
fireplace insert or wood stove in place of wood logs. A 1 Quart milk carton holds about 450 gm
of wood shavings and 750 gm of glycerol by-product. When used for heating,
three milk cartons will burn for about 45 minutes and heat 20 gallons of
water from room temperature to 140 deg F. Glycerol is a dense fuel and these
Presto style logs will give off more heat than about 2 times these weight in
After a lengthy conversation with our
local waste management services about how BioDiesel is made & what it is
made out of, they stated that raw glycerol is not considered hazardous waste &
provided it is hard & not liquid they will accept it in the
regular waste stream. They suggest mixing the raw glycerol with sawdust or
wood chips &
allowing it to harden then wrap it in paper before disposing of it. They mentioned this is the
same method suggested for latex paint before disposing
of it in the regular waste stream. Check with your local waste management
services before disposing of it in this manor if this is the method you
Glycerol made from KOH (Potassium
Hydroxide) contains potassium and can be diluted with water to be used as lawn
Glycerol made from NaOH (Sodium
Hydroxide) contains a salt so it tends to kill grass & can be used if slightly
diluted with water as a weed or grass killer.
Glycerol when added in small amounts
to an Anaerobic Digester boosts Methane production. If too much is added at
one time it can cause excess foaming.
Heating NaOH Glycerol to 120F and
adding in the appropriate amounts of NaOH Lye & water it makes for a good
quality brownish colored Bar hand soap for the shop. Look
HERE for the recipe.
Heating KOH Glycerol to 120F and
adding in the appropriate amounts of KOH Lye & water it makes for a good
quality brownish colored Liquid hand soap. Use the same recipe as for Bar
Commercial Power generation plants can
burn waste Glycerol as fuel. It requires high temperatures to burn glycerin so that toxic
acrolein fumes are not produced.
Toxic acrolein fumes, mainly form when boiling glycerin between 200 and 300 deg C (392-572 deg F)
to prevent this you need a really hot fire.
Waste oil contains huge amounts to
BTU. We have heard that some people construct a Babington or a Turk burner
and burn waste glycerol for heating greenhouses, however we have not
personally witnessed any of these in operation and have heard that they may
coke up. Another way to go is with a
commercially made BioDiesel
glycerin & waste oil boiler such as the one at
http://www.ukfueltech.com/biodiesel-glycerine.htm to dispose of any
It has been reported but not confirmed
by us that since raw Glycerol is a sugar, it makes for good Bovine cattle feed.
Waste Glycerol contains a reasonable amount of Methanol which is toxic to
humans but has been reported to be non-toxic to Bovine cattle due to
something about their different digestive system and metabolism being able
to break down the Methanol without incurring the toxic effects that humans have with it.
It must be stressed however that this claim has not been substantiated & if
you try this it is at your own risk. If anybody can locate any official data
indicating this it true, please contact the webmaster of this web site &
give us the source information so we can publish it here for every ones
Waste Glycerol also contains a
reasonable amount of Methanol and as such some find it worth while to
attempt Methanol recovery by Vacuum distillation. According to our sources,
10 gallons of fresh waste Glycerol may contain as much as 3 gallons of
Methanol. At current prices this amounts to around $9 worth of Methanol.