[Diy_efi] Is E85 worth it? - Seams filling up again ?

[Bernd Felsche]

On Thursday 07 September 2006 18:28, Mike wrote:
> At 06:15 PM 9/7/06, you wrote:
> >Most of us dont live underground in oily caverns.

> There seems to be more anecdotal evidence these (early) caverns
> are slowly filling up with more oil, not just from the seams
> bleeding out due to the removal of the primary oil by reduction in
> pressure but other factors.

It'd produce more oil to use algae in sunlight to produce oils for
production of biodiesels. The unesterfied oil is equivalent to
vegetable oils as a fuel. If the engine is built to burn such oils,
then no further processing is required.

Esterfication produces a biodiesel, suitable for use in common
diesel engines.

One "feed stock" for the process is flue gas from coal-/oil-fired
power station, bubbled through ponds of selected algae. The
biodiesel yield from the aquaculture is about 7 times higher per
unit area than for agricultural stocks such as soya beans.  The CO2
sequestration cycle by algae is a matter of days; not even months.
Roughly 80% of the CO2 is typically captured by the algae.

The other feed stock is brack water from sewage treatment.

One complication is that the algae require sunlight to convert the
CO2; so flue gas emitted overnight needs to be stored until there is
enough light for the algae to start metabolising. Optimised control
of the process would require some sort of storage and reservoir of
CO2 anyway.

Some types of algae will "burst" and lose their lipids (oils) when
starved of CO2; which you don't want to happen until you're ready to
harvest. More resilient types of algae require more intensive
processing, mechanical or chemical, in order to harvest the lipids
within their cell wall.

Lots of research done in the past.
e.g.	http://www.fao.org/docrep/w7241e/w7241e0h.htm

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