[Gasification] Cellulosic Ethanol a dead end

[mmbtupr at aol.com]

     from  Lewis L Smith

I don't have time to footnote all the information that sticks in my 
mind, so I'll just have to keep an eye open for the next estimate.

In any case, a relatively high fuel consumption for extraction and 
processing [ whether it is 35% or 60% ] in the case of tar sands and 
similar [ albeit lower ] numbers for old reservoirs which require 
injection to maintain pressure, means that most numbers for production 
and reserves in the petroleum industry are overstated, even if they 
were honest, which many of them are not. Add increasing domestic 
consumption in the producing countries, and what is available for 
export is a lot less than what people think. So "peak oil" could come 
sonner than we expect !

Cordially.  ###

-----Original Message-----
From: Bob Stuart <bobstuart at sasktel.net>
To: Discussion of biomass pyrolysis and gasification 
<gasification at listserv.repp.org>
Sent: Mon, Nov 12  10:59 AM
Subject: Re: [Gasification] Cellulosic Ethanol a dead end


On 12-Nov-07, at 9:44 AM, Pels, J.R. (Jan) wrote:
>
> Let's not forget that alternatives to oil also waste. E.g., tar sands
> need 0.6 barrel of oil extra to produce 1 barrel of oil.

I don't think anyone has gotten it down that far.  AFAIR, the
struggle has been to get more than one barrel out by burning two on
site.  By the time you add in the high and still escalating costs of
extraction and processing, including what the workers use, it may be
a net loss.  The companies may still be finding economies at the sand
face, but it is getting more expensive to support human beings in the
area per capita as the environment gets overwhelmed.

Best,
Bob Stuart




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