Kosfeld Fenna Thesis - Flipbook - Page 70
Different by-products through pyrolisis techniques
1
Fir wood log carbonised at around
350-400 º C is fully pyrolised and
shows great qualities of biochar, clean
burn, equal porosity. On top ot wood
logs I stacked and loaded cattle bones,
to see material interferences an differences througout the smae pyrolisi
process. Due to the heating of bones,
bone tar formed and flowed like a
viscious liquid over the woodlog and
covered it. The matrial reaction shows
itself very intersting, as the tar has a
attractive gloss and shimmer to it. In
this experiment, bone tar randomly
turned into a varnish of the wood,
keeping the woodlog in its core structure, as it glues the pores from outside
together. This opened an interesting
path of combining materials in the
same pyrolisis process as well as working with the interconnected material
reactions/transitions and their impact
on one another .
Bonechar was heated at around 400 ºC
in technique A and similar to number 1
and 3. Bones revealed various properties, from char, tar to graphene-like
scrap material that formed on sides of
the barrel. The little scrap pieces were
iridescenct. There are many other
small material reactions that I could
observe within the barrel, on the sides
and underneath the lid. My focus
stayed on the biochar, which leaves
this 昀椀eld open for further research in
the future. Yet, I believe, besides of the
the feedstock, gases and liquids that
are released and mix in areas of the
barrel have very intrinsic reactions
with one another, leaving graphenelike residues, sparkly glitter powder,
matt black pigment, glossy and sticky
patterns.
2
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