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Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
Member Is Offline
Mood: Chemistry: the subtle science.
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Efficient conversion of wood to energy has to start with drying the wood first by just letting it set in the sun for a few months. As Tim
pointed out, fresh cut wood is at least 40% water.
Secondly, if you heat wood to destructively distill off the volatiles, then condense these vapors to a liquid here again you are losing
energy through your condenser cooling water.
The single most important condition for a successful synthesis is good mixing - Nicodem
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vulture
Forum Gatekeeper
Posts: 3330
Registered: 25-5-2002
Location: France
Member Is Offline
Mood: No Mood
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All this biofuel crap is becoming more religion and art than science.
Millions of acres of valuable rainforest are being cut down in Brazil and Indonesia because the west wants envirofriendly biofuel.
After that tons of fertilizer and pesticides (DDT and co are still quite popular in third world countries) are used to get a meager yield of rapsoil
or something like that.
Then ofcourse it needs to be enriched and purified before use, wasting some oil or natural gas and producing nice quantities of waste water and
gasses.
Nice job treehuggers!
[Edited on 9-2-2006 by vulture]
One shouldn't accept or resort to the mutilation of science to appease the mentally impaired.
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sparkgap
International Hazard
Posts: 1234
Registered: 16-1-2005
Location: not where you think
Member Is Offline
Mood: chaotropic
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"Millions of acres of valuable rainforest are being cut down in Brazil and Indonesia because the west wants envirofriendly biofuel."
It's *supposedly* sustainable. Problem is that some are just too greedy.
"...tons of fertilizer and pesticides (DDT and co are still quite popular in third world countries)..."
Give them cheaper alternatives and I'd bet they'd switch in a heartbeat. Synthetic pyrethroids remain out of reach for most farmers. As for
botanicals... sorry, I don't know why they don't. Stability?
sparky (^_^)
"What's UTFSE? I keep hearing about it, but I can't be arsed to search for the answer..."
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Texium
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Thread Moved
19-11-2023 at 11:03 |
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