[Stoves] combusting Coffee Pulp/Cherry

[Frank Scott]

Paul

Thank you for providing that information. However during my stay in Brazil,
I was taken to numerous coffee farms and I never saw a single pig at any of
the plantations that I visited. The coffee growers there scattered many tons
of their wet processed coffee pulp in-between the rows of coffee trees.

Besides the putrid smell, this enormous amount of coffee pulp waste causes
severe environmental problems, such as water pollution, soil acidification
and greenhouse gas emissions through deforestation.

 

At the same time the fuel costs at some of these larger farms can amount to
well over $10,000 per year and rising. Senior management from the Pinhalense
Group also advised me that wood resources were becoming scarce and that
sometime in the future they will be prohibited from using wood to dry their
coffee beans.

 

By using my technology to burn this wet coffee pulp, which you correctly
point out is an extremely low-grade fuel, we were able to get temperatures
of about 1000°C. (not bad for such a low grade fuel)

 

This would save some the coffee growers the $10,000 which they are now
paying for their rising fuel costs and would result in the following
environmental benefits

 

. reduction of methane emissions from uncontrolled anaerobic digestion of
coffee pulp

. reduction of water pollution from improper long-term storage of coffee
pulp

. reduction of soil acidification from disposed coffee pulp

. reduction of deforestation in surrounding areas

 

The amount of coffee pulp produced at some of the farms that I have seen
would feed scores of piggy’s and perhaps most coffee growers are more
interested in growing coffee then raising pigs.

 

There are horses (pigs) for courses.

 

Cheers

Frank


  _____  

From: stoves-bounces at lists.bioenergylists.org
[mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of Paul Olivier
Sent: Saturday, February 11, 2012 9:57 AM
To: Discussion of biomass cooking stoves
Subject: Re: [Stoves] combusting Coffee Pulp/Cherry


Frank,

Here in Vietnam we have both dry coffee husks and wet coffee pulp.
We gasify the dry coffee husk as a source of fuel for drying the coffee bean
from a wet mill,
 and that we ferment the wet coffee pulp as a feed for pigs.
The fermented coffee pulp has a crude protein content as high as 14%.

Wet coffee pulp is an extremely low-grade fuel, but it can be easily
converted into a quality pig feed.
All that is needed to ferment it is to add 5% molasses by weight and put it
into a sealed container or bag.
The pH of this fermented brew drops below 4.0.
After one week it can be fed to pigs.

Some types of waste earn more money as a fuel,
 and some types of waste earn more money as a feed.
>From an economic point of view, it's far from ideal to burn pig feed.

Thanks.
Paul


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