[Stoves] Evidence of carcinogenicity/toxicity in emission from rice straw pellet gasification

[Tuong DoDuc]

Dear Otto,

The gasifier stove is a top-lid, updraft with 12VDC fan and a small battery
attached.
The design is inspired from the Philips one with Belonio/Paul Oliver's
burner.
Sorry that we can not share any photo at this moment.
I will keep the list updated about it when it can be publicly available.

Thank you for your offering with the Peko Pe stove. We would be very
interested in having it here in Hanoi.
Another way is that we send you the straw pellets, and you make the test
with the Peko-Pe stove.
Would be very happy to learn from that test result as well.

Best regards,
Tuong


On Sun, Jun 1, 2014 at 4:31 PM, Otto Formo <terra-matricula at hotmail.com>
wrote:

> Dear Tuong,
>
> Could you please describe what type of gasifier unit, you are testing.
> Most gasifier units I know of, are Top Lit and some are Up Draft.
>
> Is it a Fan Driven gasifier or a Natural Draft?
> What`s the temperature at the pyrolytic front and do the unit consume the
> char, as well?
>
> We will be happy to provide the Natural Darft gasifier, Peko Pe, for
> testing.
> Under normal condition, the temperature at the pyrolytic front do not
> reach above 450 - 550 C, and far beyond the critical temperature to create
> clinker from straw pellets.
>
> This are very important questions and issues, whic goes for the pellet out
> of Jatropha residue, as well.
> I am very happy to see this questions raised AGAIN and I am still a Fan of
> none fan driven units, meaning Natural Draft.
>
> Otto
>
>
> ------------------------------
> Date: Sat, 31 May 2014 19:48:23 -0400
> From: crispinpigott at outlook.com
> To: stoves at lists.bioenergylists.org
> Subject: Re: [Stoves] Evidence of carcinogenicity/toxicity in emission
> from rice straw pellet gasification
>
>
>  ‎Dear Tuong
>
>  Please address this question to Prof Philip Lloyd who is subscribed to
> this list. He is a professor of chemical engineering and has a stove
> testing lab. He may have good ideas on how to design a test method.
>
>  Regards
>  Crispin
>
>    *From: *Tuong DoDuc
> *Sent: *Saturday, May 31, 2014 19:35
> *To: *Discussion of biomass cooking stoves
> *Reply To: *Discussion of biomass cooking stoves
> *Subject: *[Stoves] Evidence of carcinogenicity/toxicity in emission from
> rice straw pellet gasification
>
>  Dear stovers,
>
>  We are testing rice straw pellet in a small TLUD gasifier in Vietnam.
> There's a concern raised during our test that the toxic gases and
> Polycyclic aromatic hydrocarbons (PAHs) emitted from the gasification
> process of rice straw pellet may affect the human health.
>  Especially the toxic gases may comes from the left-over pesticide inside
> rice straw under high gasification temperature.
>
>  Any suggestion for further testing and/or scientific evidence relating
> to this are highly appreciated !
>
>  Thanks
>
>  Tuong DoDuc
> SNV Vietnam, DEVI Renewable Energies
>
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