[Stoves] lactic acid

[Jeff Holiman]

Dear Dr. Karve and Stovers,

In summary:  what are your thoughts about using biology to concentrate the
acids from fermentation into fats which can be transformed to stove fuel??

Based on inspiration, in part from Dr. Paul Oliver, this rather convoluted
path(s) to biodiesel for cookstoves
<http://forum.woodenboat.com/showthread.php?176098-Diesel-Cookstove> from
fermentation of biomass with some more potential for value added products,
including biochar, if EREI could be worthwhile?
from sun->plants-> microaerobic fermentation (MF) -> produces leachate rich
in short-chain acids similar to acid fermentation  -> makes good liquid
fertilizer and / or food source for black soldier fly larvae (BSFL)
production (Alattar 2012)
<http://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1904&context=open_access_etds>
->
 some BSFL used for fish and poultry feed (Burtle et al.)
<http://www.caes.uga.edu/commodities/animals/aquaculture/catfish/documents/soldierflymagazinearticle.pdf>
and
some used for fuel production Fuel 90 (2011) 1545–1548)
<http://bbrc.hzau.edu.cn/upload/file/From%20organic%20waste%20to%20biodiesel%20Black%20soldier%20fly_%20Hermetia%20illucens_%20makes%20it%20feasible.pdf>
: The fibrous lignocellulosic material remaining following fermentation
used for biochar feedstock after pressing (Instove Technical bulletin)
<http://instove.org/sites/default/files/BriquettePressTechnicalBulletinv1.1.pdf>
 plus
If technology permits:  chitosan from BSFL exoskeleton to make custom media
for contaminated sites  (Zhou 2014)
<http://www.ncbi.nlm.nih.gov/pubmed/24300585> or chitosan can be used to
make graphene coated biochar (Zhang 2012)
<http://www.ncbi.nlm.nih.gov/pubmed/22906501>, also for remediation.

Maybe further optimize process if one first adds leachate to animal
manures?  I would be grateful if you provided your impression of this
strategy.

Kind regards,
Jeff Holiman
Portland, OR



On Fri, Jul 11, 2014 at 10:16 PM, Anand Karve <adkarve at gmail.com> wrote:

> Dear Stovers,
>  After having worked on charring and gasification of biomass, I am now
> attrempting to convert biomass into a standardised liquid fuel, which would
> burn cleanly. Alcohol is one choice, but the raw material, sugar or starch,
> is costly. The method of making sauerkraut and silaged grass shows that it
> is relatively easy to make lactic acid from cellulosic biomass. The
> relevant literature states that very little energy is lost in this
> process. This acid can be easily eluated from the reactor by using
> water. However, the lactic acid obtained in this manner is in a very dilute
> form. How can one concentrate it? Does one distill it like alcohol? Can one
> use reverse osmosis to remove the water? And would it burn in its
> concentrated form? I know that glacial acetic acid burns.
> Yours
> A.D.Karve
>
> On Fri, Jul 11, 2014 at 10:33 PM, Richard Stanley <
> rstanley at legacyfound.org> wrote:
>
>> Kevin,
>>
>> I heartily agree with Ron re, Beck and Tanton et al. Ron's counterpoint
>> reference is well taken;
>>
>>
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