Hello Tom , Mike e Keith
The methanol production from saw dust need to done via
thermochemical route , require much energy input , as no bacteria
yet commercially can make methanol where as ethanol production
via reusable enzymes require low energy input.
What Mike refer is the very old process which was commercially
practised in Russia to produce feed yeast using acid hydrolysis
process to make sugar from cellulose
Any one know about the yield of methanol from biomass waste ?
The ethanol yield from cellulose can be 100 percent as theoretical
yeil is 110 percents. The biotechnology can make possible the big
company making celluosic enzymes, make possible also enzymatic
hydrolysis the small farmer making ethanol in back yard. This
research was my PHd thesis , which I have fined in 1983 in IIT
Delhi and I am sure
this process can make viable the biomass refinary for poor and rich countries.
For every 3 day billion dollar go outside USA to import
petrol . Only 1 porcent of this money spent for biorefinery can solve
not only USA , but also the developing country.
Making methanol via petro chemical route in big refinery is
making the cost make it competitive in relation with ethanol.
The methanol is known as wood alcohol as it was traditionally
obtained from destructive distillation .The modern method involve
catalytic synthesis from wood gas. This two step process can be
carried out in a small scale as the traditional high pressure is
now a days replaced by the low pressure process as already published
in this list.
I agree with Keith view here that Methanol can be made in
small scale too with care and using pyrolysis as here the yield
is not a matter as we do get several useful byproducts.The bio oil
as the byproduct can also make this process very useful to farmer
as this has pr oven to be an natural pesticide and good food
preservatives. In Japan bio oil made flue gas from wood are used
very much as food additives..Here too this can be more dangerous than
methanol
Surely new comer to the list need to first consult the old list
first and thus can learn a lot before posting to the list.
Here we need to make the network bringing new information and
practical data so that our list member can help each other to solve
real problems.
Making methanol from cellulose is not yet mature one as one of
Bio D for small scale , but can be made possible
sd
Pannir selvam
On Apr 3, 2005 4:21 AM, Keith Addison <[EMAIL PROTECTED]> wrote:
> >Hi Tom and Kieth,
> >
> >I have a copy of Brown's Second Alcohol Fuel Cookbook
> >by Michael H. Brown. In it, there is a section on
> >methanol production (pg 125). It lists the ingredients
> >and equipment and continues with a section called
> >"Step-by-Step Procedures". The procedure goes into a
> >lot of detail and describes what your reaction will
> >look like, how much heat to expect from the exothermic
> >reaction and how it should behave -- beginning with
> >the introduction of sulfuric acid, to pH balancing and
> >finally to fermentation. It even suggests how to
> >collect and make use of the lignin, a byproduct of the
> >acid/sawdust reaction. Apparently it burns and can be
> >used as a fuel for your still.
> >
> >I can't remember where I bought the book. But, if it's
> >out of print or otherwise unavailable, I can
> >transcribe the section if anyone is interested.
> >
> >Mike
>
> Hi Mike
>
> Are you sure that's methanol, and not his ethanol from sawdust
> method? It sounds just the same, and that's here:
>
> Fuel From Sawdust
> http://journeytoforever.org/biofuel_library.html#sawdust
>
> Best
>
> Keith
>
>
> >--- Keith Addison <[EMAIL PROTECTED]> wrote:
> > > Hello Tom
> > >
> > > >As a newcomer to the biodiesel world I was
> > > wondering if it was possible to
> > > >make methanol in your "backyard" so to speak?
> > >
> > > No. We've been discussing this since the list was
> > > founded five years
> > > ago, but nobody's found a solution yet. Dr Tom Reed,
> > > who probably
> > > knows more about methanol than most, told me we just
> > > aren't there
> > > yet. Walt Patrick of Windward posted some
> > > interesting information
> > > some time ago and said his organisation would be
> > > working on it, but
> > > we've heard nothing since. You can check it in the
> > > archives if you
> > > like.
> > >
> > > >And the other question is it
> > > >possible to make biodiesel with ethanol?
> > >
> > > Not for novices:
> > >
> > > Ethyl esters -- making ethanol biodiesel
> > >
> >http://journeytoforever.org/biodiesel_make2.html#ethylester
> > >
> > > >I am putting together a proposal
> > > >for an East African country to follow Brazils lead
> > > and have to do some
> > > >homework first.
> > >
> > > There have been enquiries and initiatives from quite
> > > a few African
> > > countries concerning ethyl esters, but we've never
> > > heard anything
> > > further. I'd investigate it thoroughly first before
> > > recommending
> > > anything if I were you.
> > >
> > > Best wshes
> > >
> > > Keith
> > >
> > >
> > > >selam,
> > > >tom mountain
>
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--
Pagandai V Pannirselvam
Universidade Federal do Rio Grande do Norte - UFRN
Departamento de Engenharia Qu’mica - DEQ
Centro de Tecnologia - CT
Programa de P—s Gradua¨‹o em Engenharia Qu’mica - PPGEQ
Grupo de Pesquisa em Engenharia de Custos - GPEC
Av. Senador Salgado Filho, Campus Universit‡rio
CEP 59.072-970 , Natal/RN - Brasil
Residence :
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Telefone(fax) ( 84 ) 215-3770 Ramal20
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