use of plant\woody mass as feedstocks

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21 April, 2016 - 06:31
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David Hagan
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use of plant\woody mass as feedstocks

was just wondering if this can be done practically as this would be a common material for me to come by. also would help with my woodland management as well. waste not want not.... any ideas would be welcome. thxs dave.

 

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25 April, 2016 - 20:21
Jason Beers
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They can be used to heat your

They can be used to heat your digester if not to feed it.  Look up Jean Pain.  This will be fascinating to you.

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26 April, 2016 - 10:44
Nick Chase
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from our facebook group:

from our facebook group:

Vittorio Mori As I mentioned before, the use of cellolosic substrates involves a preliminary step of "pre-treatment" with enzymes such as cellulase. (https://en.wikipedia.org/wiki/Cellulase). Check this video (minute 2:50 onward) to get an idea of the process: they ...Mehr anzeigen
 
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Vittorio Mori Wood is whole another story, in a word, no it's really too difficult to use it as a substrate, not worth the trouble. The energy you'd need to chip it to small chunks, hydrolize it, treat it with enzymes ad finally put it into the digester is far more than the energy you'll get from it. The best/cleanest energetic use of wood is gasification trough pyrolysis.
 
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Kifah Al-Imarah From the view of biochemical science the Lignocellulosic biomass present the problems for liquid phase AD.The major constituents of lignocellulose are cellulose, hemicellulose, and lignin, polymers that are closely associated with each other constituti...Mehr anzeigen
 
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Thomas Gram Hard biomass is optimal for gasification, though. With the right catalysts, syngas (the mix of hydrogen and carbon monoxide resulting from gasification) can replace petroleum for most applications.
 
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2 May, 2016 - 13:12
David Hagan
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woody mass

have been looking into jean pain method. since i posted last now have access to 100+ tons of sawdust. it has been stored outside so drying it for burning would likely be difficult, but pyrolis does sound promising or else jean pain method. specially since the saw dust is free....only cost would be petrol to go get it.

 

 

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22 April, 2017 - 13:28
(Reply to #4)
Glenn Lightfoot
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Pelletising Sawdust

Hi David,

I've done some feasabilty work on pelletising sawdust or torrefied biomass. There is now a business in the Alabama/Mississippi border region that exports torrefied pellets. So yes there are definitely possibilities for saw dust as a semi stable fuel, with a higher energy density than raw wood. 

Theres even a cement plant in Canada that uses torrefication to improve the quality of biomass for their kiln

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21 April, 2017 - 00:39
Glenn Lightfoot
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wood as feed stock

I am willing to try this, but I think it will be slower as there is an additional fungal step or two, Workers in the DOE have been studying this for years (as have researchers where I live). 

here is an article: http://biomassmagazine.com/articles/12946/researchers-find-bioenergy-pot...

I also remember seeing this style of article back in 2010, I think they were looking into the gut of termites and other wood scavenging insects.

I'll chuck some woodlouse in too, since luckily there are no termites where I live.  

I have a compost heap that is anaerbic in the centre, is woody/leafy, is 37 C in its centre and I might just start adding that to my digester slowly. I'm in no rush.

I might have to uses two stage digestion with the over flow of the shredded woody waste feeding the one I feed house scraps. 

It may be a couple of months before I know, we are heading into winter here.

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