[NewCandle] Nick's bitches brew

[Nick Reiter]

Hi all,

Well, as I mentioned a few posts ago, this was an
adventure in looking for anomalies, not cost effective
H2 generation....

HOWEVAH!!!

It prompted me to do a lot of thinking about "end of
life" useage.  In other words, if certain alloys or
forms of Al were not effectively recyclable, rather
than consign them to a landfill, why not make some gas
out of non-recyclable end-of-life scrap.

Now that being said, I confess I don't know enough
about the Al recycling industry to say just how much
of this "landfill-bound" aluminum is out there.  But
intuition says there must be alloys or pieces parts
that just aren't terribly desirable to recycle.

It costs a buttload to produce refined cooking oils,
presumably, and if one bought bottles of Wessen to
burn as fuel, one would be very silly indeed.  Or a
corn fetishist.  But rather than pour the used stuff
into the garbage, or hogfarm, or whatever, one can
burn it if its at its end-of-life phase... and scoot
on down the road!

Notions?

foamingly,

N
--- Keith Nagel <NewCandleAdmin at ipdiscover.com> wrote:

> Hi Nick,
> 
> The effective current densities on the Al surface
> undergoing such
> rapid corrosion must be huge. I vaguely recall your
> saying that
> you tried powders to no effect? Have you tried a few
> pounds worth? (grin)
> 
> Here's Fred's analysis of the reaction.
> 
>
////////////////////////////////////////////////////////////////////////
> 
> Pure Aluminum will react with High Purity Water to
> form the aluminate ion and aluminum hydroxide ( 
> Al(OH)3 )
> releasing H2 in the process. The Aluminate and
> Sodium-Potassium Ion "catalyze" The Hydrolysis
> Reaction.
> 
> Once it starts all you have to do is keep it hot and
> add water and aluminum.
> 
> A Very Expensive way to Produce Hydrogen from Water:
> 2 Al (54 lbs) + 6 H2O ( 108 lbs)   -----> 2 Al(OH)3
> (156 lbs) + 3 H2 (6 lbs).
> 
> IOW at the current price ($1.10/lb)  about $60.00/54
> Lb, the 6 lbs of H2 will cost $10.00 per pound.
> 
> The best water electrolysis units use 25 Kilowatt
> Hours Per Lb ~ $2.00 per pound to make H2.
> 
> Zinc (Zincate), Manganese(Manganate)
> Molybdenum(Molybdate) and Nickel (Nickelate) acts
> similarly.
> 
> Higher water temperatures increase the Ion Product
> Constant (H3O+ and OH-) and
> speed up the metal Hydrolysis Reaction.
> 
> 
> http://www.uncp.edu/home/mcclurem/ptable/al.htm
> 
> "Aluminum forms only a +3 ion. In solution, the
> aluminum ion hydrates to form the ion Al(H2O)63+.
> Solutions containing the aluminum
> ion are acidic due to the reaction of this ion with
> water to produce Al(H 2O)5(OH)2+ and H+. Aluminum
> forms an insuluble hydroxide
> Al(OH)3 in the presence of hydroxide ions and the
> soluble aluminate ion, Al(OH)4- , in the presence of
> excess hydroxide ions."
> 
> It takes 20 times as much energy to make aluminum as
> it does to recycle it.
> 
> Fred
>
//////////////////////////////////////////////////////////////////////////////
> 
> 
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> 



       
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