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<body class='hmmessage'><div dir='ltr'>Dear Tuong,<BR> <BR>Could you please describe what type of gasifier unit, you are testing.<BR>Most gasifier units I know of, are Top Lit and some are Up Draft.<BR> <BR>Is it a Fan Driven gasifier or a Natural Draft?<BR>What`s the temperature at the pyrolytic front and do the unit consume the char, as well?<BR> <BR>We will be happy to provide the Natural Darft gasifier, Peko Pe, for testing.<BR>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.<BR> <BR>This are very important questions and issues, whic goes for the pellet out of Jatropha residue, as well.<BR>I am very happy to see this questions raised AGAIN and I am still a Fan of none fan driven units, meaning Natural Draft.<BR> <BR>Otto <BR><br> <BR><div><hr id="stopSpelling">Date: Sat, 31 May 2014 19:48:23 -0400<br>From: crispinpigott@outlook.com<br>To: stoves@lists.bioenergylists.org<br>Subject: Re: [Stoves] Evidence of carcinogenicity/toxicity in emission from rice straw pellet gasification<br><br>
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ęDear Tuong </div>
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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. </div>
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Regards </div>
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Crispin </div>
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<div><b>From: </b>Tuong DoDuc</div>
<div><b>Sent: </b>Saturday, May 31, 2014 19:35</div>
<div><b>To: </b>Discussion of biomass cooking stoves</div>
<div><b>Reply To: </b>Discussion of biomass cooking stoves</div>
<div><b>Subject: </b>[Stoves] Evidence of carcinogenicity/toxicity in emission from rice straw pellet gasification</div>
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<div dir="ltr">Dear stovers,
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<div>We are testing rice straw pellet in a small TLUD gasifier in Vietnam. </div>
<div>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. <br>
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<div>Especially the toxic gases may comes from the left-over pesticide inside rice straw under high gasification temperature.</div>
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<div>Any suggestion for further testing and/or scientific evidence relating to this are highly appreciated !</div>
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<div>Thanks</div>
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<div>Tuong DoDuc</div>
<div>SNV Vietnam, DEVI Renewable Energies <br>
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