[Stoves] [Digestion] [biochar] Orange Peels

[Alex English]

Hi Frank,
What are the dimensions of your pipe?

Alex

On 6/24/2011 10:24 PM, frank at compostlab.com wrote:
> Stovers,
>
> Working on a new test package that anyone can do I decided to try it on
> orange peels.
>
> Results:
> moisture 88.8%
>
> Below tested on the dry fraction;
> Mobile Matter = 67.1 %
> Resident Char (ash calculated out so not included)  = 29.6 %
> Ash = 3.3 %
>
> Below tested on the ash fraction
> Acid soluble ash = 90.0 %
> non-acid soluble ash = 10.0 %
>
> Meaning;
> With 67.1% of the dry fraction going up in smoke (or volatiles) that can
> be used for producer gas or running a gas burner stove.
> The 29.6 %  char fraction DAF perhaps having around 80+ % carbon for
> soil applications.
> The small amount of ash (3.3%) is mostly acid soluble (90%) so made of
> soluble nutrients and carbonates and oxides. If the ash was a lot high
> than 3.3% with 90% acid soluble this char would likely have a high
> calcium carbonate equivalent (CCE). The low (10% of the ash) non-acid
> soluble = stones, dirt, phytoliths  etc.
>
> Method;
> Moisture determined at 105 deg C.
> Dry mater was ground and packed into a pipe with end caps on loose and
> heated in a temperature controlled oven at 450 deg. C for 4 hours. Loss
> of weight = Mobile matter
> Char removed to a crucible and heated in air at 550 deg C to determine
> total ash content. Loss in weight is char.
> Acid added (50% HCl) to the ash and warmed / filtered through glass
> fiber / dried 105 deg C and weighed to get the non-acid soluble fraction.
>
> This test package was suggested by Hugh as an inexpensive test package
> to be used on char samples but I find also good for biomass as well.
>
> Frank
>
>
>
>
>
> *On Fri, 24 Jun 2011 06:39:48 -0700, Tom Miles wrote*
>  > All,
>  >
>  > Many thanks for the all of the generous suggestions regarding orange
> peels. We’ll compile them and put them on the websites while we
> determine what is most suitable for the particular application in
> Southern Africa.
>  >
>  > I have to admit that when I last looked at a pile of orange peels (in
> Brazil) I wasn’t thinking of how they could be used. It certainly looks
> like at sufficient scale the limonene may be worth recovering.  At
> smaller scales management (rotting) or use (briquetting, drying,
> charring) of the peel also seems to have potential. Pigs and chickens
> would also probably recycle the peel, or make enough of a mess to be
> incorporated in compost or soil. Feeding to birds with char is not high
> on my list unless there is a health benefit. Usually the object is to
> increase weight gain my increasing intake rather than reduce intake with
> a low density material like char.
>  >
>  > Regards,
>  >
>  > Tom
>  >
>
>
> --
> Frank Shields
> Soil Control Lab
> 42 Hangar Way
> Watsonville, CA  95076
> (831) 724-5422tel
> (831) 724-3188fax
> www.compostlab.com <http://www.compostlab.com/>
> www.greenrooflab.com
>
>
>
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